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~ . ..l'::f. '-~~ ~.£ ~. 

·.,. 'I' .>. It. 

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> • 

REF ID :A6640'2 

... 

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•, 

Declassified and approved for release by NSA on 11-22-2013 

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FICATION W_,, 

DISPOSITION FORM 

FILE tlO. SUBJECT 

SECURITY Rl!d.EASE . OF LECTURE ON C. I. 

TD Mr. Friedman FROll, AFSA--00A DAT£ 30 Jan• 1951 COMMDIT ND.1 

ESL Goodwin/meb/335 

The draft of the lecture on Co.rrununications Intelligence given by you·before the 

faculty and students of Class 50-B, Air Communication and Electronic Staff Office~sr 

Course, on 29 September 1950 is approved for delivery, under the classification of 

SECRET, at the Air Command and Staff School, Maxwell AFB, on 2 February 1951. 

CO.NFID ENTIAL 

NM E FORI llO ·g 6 Replaaes DA AGO Fonn 897, 1 Oct 47, which •aY be ...d. ........... IOCT41 _.,. -- ~ ?-

- ~ - -- ----------------· 
i _J_ __ _ 

REF ID:A66402 

SECRET 

camuNIOATitm nr.rm:.r.IOEHCB 

A pnaentation b,y Mr. WU11am :r. Frieclnln to the Faoult.y 

am students ot C1aaa so-a, Air Comsuniaat.ion. JD.eatrom.o "'- ~ Of!i_..' eouno, an 29 Septaa~ uc;o .... -·\·~,~ _,. • -... , r-. .. .-\ ... ' ,:_ . ~ .. _ .... -

.. ) .. "-- . ~··....,.. .... 

ciatim ot the oppOZ'Wnitf to caae hae to talk to ,-ou on 11.\Y subject. In 

invlting ae to speak on the subjeOt of Comunications InteW.genoe1 1t 

wu indicated t.hat. "the objective of tile praent&Uon is to create an 

mrarccese of Ute baclco*otmd1 dewlopmnt, a."ld manner of ~ ot 

this vital m111tQ7 wapon." caraunicatiozm IntellJ.genoe 1188 not al1ft\y8 

regarded aa T.l.tal. I aa rem:\nded hel'8 ot a stor.r that I read some YeanJ 

/ago in an old book• ond tho story ma.r be apoc17phal1 but I give i~ tor 

11hat it. 1a llO!'th. I-\ aear. that. about tw,, tJ4ousand years ib""O there,,.. 

a Persian queen 11hoae name waa 3elairamia am llho took an intcut in 

C1'1PtozraPlV• Whether it was because ot that interest. or other unnatural 

circmstancee, the ftcord doesn't, sa;r, but anyhow she :m an unt1ml1' 

death. Pre&waabJJ' ahe went, to Ueaven, or perhapa t.o the otber- place, but 

having left inatrucUoos aa to tho disposition of her rmai."llt1 th97 built 

for her an ~sing muaol.eum in "*1ich nor sarcophagus reeted. Q1 the 

outeide of the ma'*'1eum there 1188 carved a maaaqe1 11h1cb said, nstq, 

wary- t.rawl.er I It thou an tootaol"o, hunsr71 or :l.n need ot monclll't 

un.\ock the l'idd.le ot the oiphar gl'&<ven bolarr1 and you will be + to 

ftchee be70Jd all drealla ot awrlce•" Th8D undernaatb 1~.:.thara waa a 

~. For atmral hundred 19U9 tbe posaibW.tq' ot su1den wa'J.tb 

IGf'led • a lUN to all the espGl"ts llbo tried their band8 at dec1pher1ng 

the.,. ... , 'but the¥ are without suo08881 until one da.11 PJ.Wll.mbl1°1 
I 

REF ~6402 

~-..,..,,,~- .. 

along came a ~. bespectacled indiv.l.dual who, after wark::lng 

at, 1t. for a considerable l4ngtb ot ti:ae, ool...i tho mesaago. It gaw 

ha detailed inatructr.1ona tor •kin8 a 88Cll'9t ent.r,r into the tomb. 

Wben he got inside he totD! aa inst.ruction to open the aarcopbagu8• bat 

he had to solve another mes11age in order to do' so. Poaaibl¥ it irrtalwd 

t1nd1ng t.he cor.NO-.. ccmbimtiau to a $-tudfur look I iell.1 he solwd 

that. one too, attar a lot of wo:ik, mi opened the 8llJ'COphagU8 and. l01Dl 

a boX. In the box na a meaaage in plain language,. am t."lis is mat it 

aaid.1 ttfll1 thou vile and inaati.able monster, to d.1.aturb these pool" 

bones I U thou hadst. laarDed acmatbing more uaeful than the m-t of 

dec1pbtu'1ng1 thou m:ruld&t not be tootao:re, hl.mgl'71 or 1n med ot lliOlleJ" ri 

»an;y til4ea in the coUl"IS8 oi the put. thirtq ,.ears I haw had oocas1on to 

1l1ah that I kmw the old aal •a address au ti.lat r could put aa a .tirat 

~i; to the buic comunication the single ward ueoncur.n "ilell, 

BDJh011F1 it•s been an interesting l.Ue, it not f1nanc~ lucrat1w. 

1'lW I ma going to read :fOt1 a abort ~aph :f'ra::l ~ !§aa:ina ot 

uu.s. cit1sena d1acaverod last waek that pes'bape their 

Z11D&t potent secret. 1l8apoll or World war II as not. radar, ~ 

t.he V'l .f'u8o1 no\ the ataa bomb1 butt a baNleea little machim 

Which crntosraptuJN pa:Lna~ cona'1'ucted in a hidden 

:room in ·~· Wit,.~ this mddne, tiiU\ attar years ~ 

tr1al and _.,..., ot ~ and c:leductiOD, Cl7Ptog;l'aphen 

baw dupljcated the dacor:U.ng dsvicae used 1n TGJqo. Taat1moqr 

bef0l'8 1ihe Pearl Haz1»zi 00m1"8a bad ~ allOlm t,ba\ the 

mcld.ne knOm1 aa •Kagic• W8I in ue long before nee.bar 11 l91al.1 

'sEeREI ..._,_ __ --- . 
had gi'fell maple am1ns ot the Jape• aneek attack it on1)' u.s. 

brass bats bad been ma1'\ enovat:i to 1'9811• it. Oeneral Yarahall 

now oont.i.nuad the atoJ7 ot fUagio •at magS.o.• . . 

And then it, .. OD to aq at that •tor:r ..... I hope 1111 haw t.ime to 

rat.um to 1' a 11tt.J.e bit latc- ca. 

1 -f{_ 1 l ~ med to at.nas the naoaasitr' tor seo.recv in this bl1Bineu. , ·, t&,~.:..... ........ ~..,.~;).'" . fjJpe tor .tuturre suoo8se ~ to a V8l7 gl'G4t degree on ~ 

. .1801"9Cl' with reapeot. to put ~.. QJ.angee aa a 1'88Ul~ ot mpected 

\lle ettecta ~ lealcage or comprcm:tae are not ~~ - t.be;r a.re 111daspread, 

beoame ot the 1l1daapnad 'll8G and dis~ ot ~ cr,yp~c 

s:ratam&• Dudns •ld War II, I :.ddlt aay 1 the contil'lua."lCG o£ our succesa i.i~ 

hung b,y a 'ft/rfJ alender thread. I ata nn:lnded at tMa point of an inatance 

ot this sort; l1h1ch happened j'W!J't. a short tJ.me be.tore 191&1, an:l to avoid 

.,..sng naw I will lliapq sq that t1l81'G was a ohap ma certain capitol 

' 

~ the 1!fm'lld 1lho aoat a meesage to his hC1'3B ~nt 1n 1t1ich he said 

that. he was getting a bit 1I01'ried about their comunicationa. In aubatanco, 

qe aa:l.d.1 "You krDr1 these llliq" .tele£rapbic ~- that we are having,· 

deal 1ng nth t.b1a matter in band,. .haw put a great strain cm our cipher 

,,,.... becnee tbq haW made it necJeSl&l"Y' to be ver,y 'VOlmd.nous in 0\1\" 

oorreapondm4e,. so tha\ I a afraid that perhaps som third partq ~t be 

Ndng our ~. I think w ought to do aam~ about th1a 

1!1Gh' -.,.• lrell, w Ned ttiat1 am w are ...,.. aua11 VplSd tor tear that 

1iher would take the h1ut and that 80ll8th1nc would happen. So w wre on 

tentahooks am pins am nea nee tor two or t.lu'ee di.vs tmtil n got the 

~ fJ:iOll headqvartan. YO\l can ~ h• agog with mmi.teamt w Wl'8 

3 
REF ID:A66402 

SECRET 

\1Dt.1l. t.he moeaap was procaased to • po1Dt ot intell "'giMli v. !o 

paraphl'U8 the ~,. 1\ aaid1 tlWell.1 7011 aoutbarn ext..Tmi"tv ot a 

hONe'• wtcmv1 ~·t 1't1fJ. i-altu tlua what J'OU ue ~ is .., Rft 

ot line1 Don•\ you knew that ow :qatera and t.be macbim baa 80 ramv 

peraita."1.ons am ombf nat.1.ona it•a incom»ivablo that ~ 8hGU1d be 

able to Ml these eowmicationa llithout haT.l.ng the no.ctl!ms 81¥1 the 

~ Now, don•~ J'OU. worry 4%\1 mare about it. You 'tend to J'01lr mm 

buldneaa, am a•n ~tam to onrs.• Ye ""1"0 "fC7 hapw 1ben •read 

th&"' one. The thl'98d 1ftlS izadead a Yer"J' tih1n ana that t.tm because it 

waa posaible to do quite a umber ot t.h1nga to 19801;) upll t.he Q'Stea• alW' 

.. ot m:ich would haft occupied • for months to pt back into- a state 

ot 1'8mJab111.ty. 

• ~ ~ • )>-I lllll'dl;r 1-1 to i1ve 7"'1 a chi'inU1on rd co-Uona ~. ri '.1, or CCllill'f, .as • Clll1 it !or -.. \10 doubt; llajor llDrrison has alneclf 

dealt ldth it, so I will s1q>l;y aite its three min object;;tvea. F'1rst -

to provide authent.io 1.lltoniation le poliCT __..t to apprioe t.'lm ot 

the Nalitiee ot tile international situation, of the as- making capaM]itiea 

and wl.llerabilit.iee ot foreign countries• and ot tho intenUons ot t.hoae 

eounV1eB 1111'.h ~ to war. Second - to elimnate ~ ~ of' 

8'QZ'priae trcra an ~ ot aggressiOD bi;' another oourit.r,y. third • to prov4.de 

ua1que 1nt01"118.t1on esaantial to the sucsceu.tb1 proaoc.ution, am vital 

. to a shol'ien:1n8 ot,. t.be period of hoatili u.. 

Now, the baakgrolml ot cmmrt,. 1ihich is hued upt:IC tbe M1eace ot 

~. baa a long and 1"117 irtterctaUng history 1llUcb 1a 1nmrt.ri.cabq 

bound q> with the hiatol7 ot ~· 11• •an bit oppoeit.e tacea 

~ --~ 
REF_ ID :A66402 

- ot flbe .... eoin, tor prosreaa :I.a om 1na91tabl;r ltJGda to pzrog:reu :ln 

\he o~. aance. wtdle 'l1IT talk 18 to be ctevoW ~ to ~ 

~ and oaaM'l~ I 11111 ~ to deal also_, to a ~ edtmt;,. 

1111'.h. cr.vptograpb;y and cc•dUnicaUana secnr1:~ or:- COHSJ&O. 1br1 because 

of the seo1'eC1' or cloak oE silence 1'hici1 o.tf1o.1all.1' munda the 

whole field ot arn>toloi:1 and especial.q Cl7P~t it 18 obvious 

that a.ut.hen-Uc intonmtion With reterence to the background and. development. ~ the adenee in foreign count1'1ea 1s quite eparaeJ and altbouah 

afW World Var II wa learned llUCl1 regard;L'lfl the accoBIJli sbmmte in 

'Wfl!1' mudl 4bout hoar good or bad they were in campariaon llit.h w. I can 

onJ;r' gi.w a f'airlr good account ot u.s. COMI~"T act.ivities up to a C81'ta1n 

point o-r time• and 8ftJl then I will not. be able to sq .,_.,. ::mc:h abot.oat 

tbe u.s. atrr.r•s COUINT activ1tiea• became I don•t iax. "'181'7 much about 

that background and pn!ar not- to give srrr 1ntormation which I ean•t 

· docu:aen~. In fll1I case. I m.gtit, sq at this yoint that our Nlat.i.om with 

tile lfaV 1n tlD ear~ days W1'ti such aa to preclude m:1 kncnd.ng very much 

about mat thq were doing, anl Vice 'VW88• In the course ot 'fll'/ talk I 

1IUl gift W.uatntlons ot czayp~6 soma of 1lh1cb tora part of.,,,. 

awn experience. HOdae't7 1IOuld <ttotate their oaisaion1 but because ot 

tiudl' poe8ibla 1nteJ:iest I will use ttim· a.."ld will here and now 1IUke a 

~ apal.car rr;;r the USO ot the pareonal. pronouri. 

'( Bolf.., - ha"'t the ~ elide, please. CZ1PtoaraPlf ~ ~,.,.. -:;: 

'U""\o.l we. ~ i= ...... ~ 

, ~ go hack to ~ dSlm Of t.bo 1nven1;1on of vi ~ here l., _ . . ~~~~~,.~ft.b..t~ ah• an 1ii8tance ot ~ in-b-B1ble. In~ '2S126 . e. ·_.,_· 

· · ~ ----,~ --.... \ 

.· ~-r~~~~·~~-·~ .. -~~.,~~; . 

. ~·~~-~~~.,,~~ ~,'b.te- ·-·~d u 

~ -~,,...~~~~~~:~,!Jt'F~~ 

\(~0 . -- ~~---. -~~~~- ~------------ .. ·---- ·---------~'-?.- -- --· ·--------------~---·-- ·\ -~:c: .... ~~s~~>~\r ... -------------- -----
REF ID:A66402 w"\,O- • •' '"' 

.:--· .... ~ . ..:. 

411Pft1181CIQ • And the k1na ot Sheabakh ahall drink atf;er them.ti .Alao in 

~ Sld1l1 •How is Sheahakb taken I" Woll, tor 1181\Ti ll8IV' 1ea1!ll 

tbaf, DlVl8 •staeahakb" remdmcl a IV'Bfim7• 1here ..,. no such place. 

Bll't then ama'bod7 dS.8°"8NCI that, if 10'1 write the tatntr-• l8\teN 

ot the Hebnw alpbab9't 1n tta> zwa, eJ.ewn am e1ewn, like 1hie,. JOU 

• t;p a aubatitution alphabet. 11hereb:i JOU oen replace the letwra tf' 

thQfJe atm1t ng eppaeite thm. rot' ...,le. "Shin•" is ~ 1v' 

•.Bath" or Tice,,.._, so that "8beahakh•" Uan8lat.ea "Babel," or 

•Sab:fl.cn." 'lha VOllels bad tA> be SUP,Pllad.. Incidental:b'1 mnticmtng ~~' 

tho tible• om lld.atlt JJfJl:f tt18t D&niel• Who -.sh tiia .t1rst P8:fdlaanal1&") 

~ 11Drda1 "Nebuahadnnmr drewd dr'ea:zt, 'tlhm.'IJl:ith his spirit 1188 

troubled, and sleep brake i'rom hi.a." But when tie 1IDke up be j•t 

. couldn•t eem to :renember t.."lem. ans~ he called for his magicians• 

ast:rologi.sts, and ctu\JcJean 901"Cf4'il a."ld asked them to int.erp1'8t the dream 

;; 

ne•d had d~ tho night. 'lh91' askad b.iai "Wha1; 1IBa the dream?• and he 

said~ "Well1 I don•t l'meMber it• but it•a part ot 70YI job to f1Di that 

out mi then to~ it.11 'bi.ii was a prettq aWt aaa1gnment, and 

tlK\Y failed to make good, wn:i.eb irked ~ DO m:l. B1nga bad 

a naafir' habit. ot chopping 70tJr bead oft 1n those dQB it YCl1 taUddJ ao 

1n t.h1IJ ow· it COJle8 U DO surpriae \o learn t.hat HabaGhadneaar plllrl&Gd. 

tl18 wrd .i.ons to deatro, !!! the 1d.ae mn ot Babrlont includirJg Daniel. 

1fall, 1ltl8b the a:l.ns'• paJ'd cae to get Danlel, Daniel aa1cad t.hat he be 

-ti~ 

given a bit ot tiel. '1hen1 by aoae ~-th• record atmplJ' ..,,._ 

that tha aearet 1188 rcnea1ed to l)m1e]. in a n.1.aht "1'4...aion - Daniel ._ able \ 

\ 

\ 

\ ·,.J 

...... 
. ';L : '\ ... _.... .. · 

REF :E-~2 ...... , ··-. ----. 

w ~~ the ..... and iihen ~ it.. Scat yuaru late, 

~·• aan, aalsbaaMr• ma giv.5..WJg a teaat, and during the 

C0'1198 ot tbe taut t.he t1.npra ol a manta runt appeand on the ..U. 

'beh1nd the ~ck ai:ict Wl!Ot8 a 8801P9t, .....,, DllabN_. -. 

......, nmcb upaet and cal'*' for b1e aoothsa.yen1 d\aldean SOl'OWWJ!81 

::: 

magicians and so on, but the:r oonldn•t, read the ll8!l88P - apparent.~ 

tM:r COQ.].dn•t Emil read the cirft_. chlnatera I well, Daniel was cal led 

:ln and 81cceeded not ~:jn l'fllllM.ng the writing CID tb8 .U.1 "lime, 

.... takal,. ~.· but. also the man1ng ot the 110l"da. His 

1\tt •!ek:al .. -ec art ~ed in the balMcea am found mn~. 

•11phaTsin,n or- ra~ 1•1"ereo,• (appareri'tJ.1' the cnap 11ho did t.he hand1ill"it.ing m:a t.'iw all knew a tiling m- two about oryptograplJ71 because 

he W!led ~ r) - '.ft17 Jdngd.ora shall be div.l.dad and given to the 

... abil Persiana.ft 

!he nan 1a an illustration 0£ tbo earlies~ dpher deYice biatol7 

HOtlrdat a de'llice W!l1ch was called a !V!!!'• U8ed by the aao:MJat. 

Lacedmlon1w or Gn.taks• lbe,v had a 1IOOden ~ o£ spoci t1o 

dimmaione, al"OVlld Which t.hGJ' vapped apir~ a piece ot ~J 

fb8J' then wrote the JllCl8sage ... the edges ot the ~. 1DtO\Dl 

it, am aent. it to 1ta daat.ina~ 11hezie tihe 1'8Gipient 1IOUld. mm tB 

. p&l"Chllarl\ arom.s an ~Ohed ~. am th• JrJ.ng 

~ pitapeJ:' \be bits ot J.at.Wl'a ~ the waage., !b1s 

~ ~. 

• 

is not. oorreot;., '1bo wri'U.ng waa done along the 

edg• .of the parchMnt• as I 'ttaid betorea and not aa'1oan in ~ 

1 
p:1.etm.'e. And. 1:u the 18,)'' tl28 baton wiW:b tbo European t1ald mrahalJ.. 

e\Ul oarnea ae one of the ina1gm.a ot his ~ o!!1ce der:Lwe fNI 

thi8 WJ!"J :I.ms~ 

Olesar1 ot eouraa, ia 'lllltll knaml 1n b.J.atcr'.r to hoe uaed ~ 

~ - a vrJ1111 uimpln ~ obri.~1 because all he did 11811 to 

replace each letter b.Y the enc that 11'118 .f'ourtb f:l:oom it, 1n the ~ 

C1caro 11U one Of 'the 1:mmtars Of lib.at ia now cal Jed ~. He 

had a slave b:r the mae ot 1'Jro llb.o wot.a far Cicero h1a 1"9C01'd8 and so 

0tt1 in ahOJ.1hanri or~ not.ea, aa th.er are eanec1. 

1he beginninp at !af.Xiern. ~ are to be tound in Venice, 

in the Papal atatae,. aboutt JhOO. I show 1JBXt. an alphabet ot that period 

'llhi.ah 1s intenot.ing ~ because it Si."lc:MB that in tnoae earq ~ 

t.he,y al.reactr bad a recogn:itJ.on ot the basic 1fM.\mess ot llhat w call 

s1ngla or mamalpbabetic auba'titution. sol.ut.i.on of this type ot ciphw, 

aa you all lmoll1 is ~ by u1ng data baaed upon trequemcies. 

! don•t naw to go into that becauue all o£ you,. a~ aa:ae time or other• 

h&"fe reac1 "'!'he tlold aag, 0 and uzxiefttand tna:t. sort or ~. But 

this al.ide ahOlfs tba't t.bo etr~ Italian czwtograpbers intzioduced a 

.tllOd ot d1at.ta1>1ng t.he norm]. f'requenciee, b,y hav1ng the high-~ 

lettaftJ reprwnted b,r mre than a ldllf').a dlaracter. I vUl add taat 

the earliest ~ that. t.he 110rld poaMJ1181i on the subject ot arn>t.oo'&Ph1'1 

or tcr th.a$ •"-"• crw~, 1a that; wb1ch tras R.f.tten 1n 1474 _. 

a l19P0litan, mo. nam 1JU Sicco S:tmomt.ta. lie sate tortb the pr1.oaiplea and 

:nethods of sol../ing oiph_.., ~· Id~ ciph-. no doubt•. but he d8Gcr1be8 thetl 1D 

a ,,_,. clear end ccma18o form. 1he ~ book or extensive treat4se cm 

8 
REF ID:A66402 

~-

Cl7P'too'~ 18 that b7 a Gm!laml labbot namd Mthsbut, 1lba 1llOt.e bis 

mmmnentai ... 1c 1n lSJL. ae planned t.o 10."ita toui- wl\1111.181 but he quit 

with the th:lrd one becan• he pmposeJ;r 1G'Ote ao ~ and made e\1ah 

tantaat.ic olai• that ho got dla1'pd 11'.l fh beii2g 1n leeguo 1111'.b -

nnll. 1b.,- Wrned his baoka1 aa a matter ~ taat. 

we _. eo1JJG to i1UDp a WfQ'1I nm to acme ezampl.ea f1"all m :recant . . ' 

h1a'tozl7• '1bis alide Bhoa a ciphaze al:pbabft and systam UD8d by· 11al71 

o.. of seow. 1n Ute periQ1 l.Sb.S. or ~. ~ was an 

-Italian Cl'3PtoO"GPAer whose nam8 w Porta and 11ho wrote a book, 

puhl 'abed in 156.), in Which he sho"8d oerta1n tqpea at alpbabuta t.ha' 

have ccam down 1n h1a1'.or,f am are lmcJwn now aa Porta •s Alphabet.a. Here' a 

P-'- (!_) an~~ tbo P91"ta Table, shoving ono alplabet With~ letten 

.l or it anotheZ' alphabet '71ith 1m'J' le<ttal'a c ai- n, and so on. I don't 

1Sl%r& to go 1nto a:r.aotl\?' harz thoae key' lett.ers are used, but it i.11 

sutf:l.oieat to say that, even to tb:1a day ~ using the Porta 

a.1.phabets are occasional~ ancountered. Incidentally 1 Porta was quite 

a feUCRr. :here ant lots of people 1lbo re.tar to his book lAlt haw never 

read i't. I took the ~e to b8'9 it Vanalated to see just 'llbat, he 

d1d _,.,. mid he was, in • opinion, the great.at. o£ tbe old =tJ>togl'apb.Gl'h 

~. also he was the ~ ot 11hat w know ars tbe ~ . 

~, the progenttor ot our modern C8IDDftUk I think al.so he waa ono .. 

ot the earliaR .ot 

I 

~ta abla to aolve a c srat- of ~ ~ 

WU-.. tha\ is• 1MN t.be ~ 18 cbang1ng consiatf.wl~ u the m&AID 

undelFee .-SpbemantJ. Porta'• table -.. ~uall.Y uaecl in ott1cla1 

~dtmce. 891'9 1a a pJ.c\Unt ot a table \hat waa tOIJDd aaaag the 
... ~ ..... , 

REF ID:A66402 'C = - -• .._ 

•tats papers ol Queen R1isabeth's t.1.m~ U89d lor coamm1.ca.ting 111.tb. tbe 

Etlgliah Nlbaaaador, to Spain. It used Porta.ts alpbabet8.. 

'Jhe DIS\ alido I show ia a picture ol what; ar:1Ptocr8Phen ~ 

oaU the ~ Square or Vi~ Tablet a "' ot ~ 

~ aueoaecd.~ d.1aplaced GD8 let~ per rowr, with the~ 

let.teat-a at. the top ot the ac;me am the k'a7•lettara at the aide. 'Ce 

met.hod o.t using '11• table is to agree upon ~ kfJ1' word, which causea the 

equivalents of the p~ let;ta.rs to change aocord1Dg to t.be .-mar 

in Bhicb. the lm1' changes. tioii 1 v1gendre also has an 1ntereS't, to ma 

'because although ite is corannly' eredited 111.t.b. having 1%mmted that aqmre, 

he reall.T d1dn't and,, What's more, lllJ'le?' said he did. aere•s a picture 

5'. t '_, ot it as it appears in hia omn book. It goes conaidarably be70l1d 1lhat . , ' ~_,.,,. 

tne ord1.nlJry N!erenc:es Sts:/f about his table, ~ I won't go into tho• 

differences because t,ruv•re tecimical and pe.m.apo ot no great. intereatc 

w ;rou ~. 

'fbe next ceyptoerapncr I wi..cih to :wmtion ia a F.rencbman, 1nnc01a 

Vi.eta, an 'P!d-Mnt mathematic1an, £owner or aoden1 ~"'8bra. In l.S89 he 

became Qr:nmoelor al ParJiment. at Tour"IJ and then PriV Oounsel.or. ild.18 

1n that job he solwd a Span;f.S\ cipher aysteia 'USing more than SOO 

charaatiars,. ao that all t.he Spanish dispatches falJ'J.ng into French bands 

,_. eaa~ road. pb1111p II ot Spain was so convinced of the ~ ot 

Ma cipher thai; Whm ha found the F.reDcb 1Nr'e awce of 'Ole contonta c4. bis 

lo\tara to tu ~landa, be caaplained to the Pope t.hat the ~ -.i-e 

using ~ against him. V1eta 'WU call lld on the c:arpe\ and lll&de to Jr f.e ......... -::__cit ___ old ottia1al clpbc'. _ _ , 

.L t- ....... ,-..... '---'T- ---~ \ --- l.O ~-....\ 
REF ID:A66402 ~--

~~~~·~i 

-· ....... ~ .. 

~ ~ ., ' the alphabetaJ and a al,;1 ding card, 11hich could be ah1tted up alli dml1 "'-... _....' 

/-.. ·"""'~. 

\,~~ · 1a another, called the "two square cipher•" av ·"~l:let ~J 

1t imolwa cocrd1nateau haN is one CQrf)].ete alphabet mid hezia 1a 

another one,;. t..11e coard1nate& l1l'9 'uaad to l'OPWt the letters. 1ha' , 'R8 ~ \JD8tl 1n Quvtles I•a Ua:t, 16271 in CCIDlll1cGting "1th 

Pnnce and. Fl.aDlem. ~ 

~--- - ~~~Q- ..... - • I. -· 

'~.---~-!~.{: I ant, ~)~~ .. to~ _ th ~~ -~utt;~ ;;·~- ' c 

,,...-,.-......,, 

. . - . .. .... - "~ . . . 

11.s. h1ato17.- 1he slat.eras usid bJ' the ilmricana and b:J' the Br'it.1.sh 

wn ~ J.denticall In om caae1 in tact, ~"lay used the .., code 

boat l I 11aVa seen reterences to an Afaer.tcan mo seems to haw been tbe 

Bcwolution•a AFSA, tor ho 1QS the oip:ier expet"t to Congross and it, is 

claimed that he managed to deciJiler near~ all, of not. all,. ot tbe 

DriUab code wsagea intercepted btJ the Americana. ":he next ~~ .....-.. 

: · Gr. lJ \ &hara a pioturo of a code ar "s:rllabaJ:iy, • as w call 1t1 usa.t by ~oaao \ ....___.,.,,,. ... 

Jet.tenon. Thia syllabar'.;T is constructed on t.'lo so-callod ~ 

principle. This is a portion of the deooding sect.ian. You will note 

that tbs maeric3l iJ'OUPB are 1D conaocutivo order mm their ~ 

are at random. 'i'ha'J' haw no alphabet.ical ordez- at an. It; ~ wm 

that )"Oil baVe to hml another aact1on, the ellCOd1ng secUon, 1n 1lh1ch 

the 1ftD:'d8 ua ill alpb&bet.ical ordar, and their equiw.\ents are in J'll1ldDe 

Ol'dar. '1'lda eon ~ o.yatlll 99911 tod'V' is 1n eactena:l.ve ... Jet~ 

1188 an all.-..round gem.us, am I shall have aaaetbing ta la1" abmt; bia and 

c:r,rpto~aplv" a 11\.t.1.e bit later on, I bope. ~ ttere•a an~ 1lide 

l·~~~~ l~~ -. ~.;~ •· 18".r w,iwn~ ~~ ~ Aniold,~ ~1 G~ . o.-....' .l"' ~ ~--~ ~ ~ ~...;t- ------

(~ ~ ~-o.~ ~ ~ - ~kl.U6.,<)·~~j~'· \ ~:v ~f"~~~ '-V7~' r\ ~ ~~ ~\.Mio '11 ~~~, I 

- -- .-!..-.--..- ... -- - -

/ ••• J.,..-. 
'·, I .., ....... j, 

.. IrJdeo'1pherabl 1fta80nable emr ~ta. n It. has ne"fer been decipheNd. 

I~ reads., *'I haw bought; a omr am calt baa Gen. John Jooeph Dull.:la,• 

and ao ~· Tho reuan thn it ~·t. bamt dea1pberad is that th9ft 

ian•\ anovah ot it to tona the bl81a tor a aoluUoo. 

I ma going to sq a tfJllf 1fOrda abou1i Vcn>Uan ~ tor tite 

Naaan tba\ I think tha'l tha-t ~the Dalt and a great 1~ . . 

1n the b1ato17 ot ~· About 1821 a ~ ~ 

naz.t,;1ed tbe world b/f begilm1:ag to pu1>11,m tiranslat.1.om ot ~ 

~cs. !h:.tis 1a a picture of the Rcaetta stone. It is a 't'r.1.-

lingual. ~on1 i'C'Pt.i.an h~, lollalred bf ifOptian script; 

caned "Demotic11 and then Greek. All ·t.nree texts ..... assumed to tlB!i" the 

amue 1liJing, ot course. It ns b1' :seans oE this tr1-lingoal inscription 

t.hat the EOPt.1an ~de writi:ir; was :in:&lly sol."18Clt a teat 1lin.uh 

repneanted the aucoeaa.tul. sol.ut:Lon to a ceyptanalTUc p.roblm, tb.e major 

part ot 1lh1ah 1188 1.1nguistio in character-, !or t.w cr,yptanaqtic pa.?'t vas 

relatJ.ftl¥ ~le. In tbe ~lies t.hore are thinf~ that Yl9 call 

~~ that is• maracters oncloaed in a rectangls marked b;1' a 

A-,1. g\'!IR'ml l:iDI. Ucre C'8 soae exanplee. 1ht.s one na cm an Qbe11ek, am 

aa auspacted ot ~'Una t.be name c.l@oJ?!tft• I suppoaa t.be NUOl'l 

tor that. 8881111Pt.1.on 1lllS the repiti ti.an hue or two c:barac'teN· at a prcpep 

d18tance to repx eaant the two A'•- o£ ~tn. a, tald.ng the var10U8 -- ~I writiJ:g \hal M aaNfull¥. ~ t.h• OD tbe bu:la- th&~ 

this oartouehe .. Cleapatre, it_ tuaMs out that by +,aldng tho ~ 

1n the 1 nbni\Uting t.b.elr aqu11'alent aomrm le\tcn anct patine 

- thea 1A tbe proper plaoas 1n ~ ~, l:d.t bl' ld.t ~.,. 

12 

SE.~RE.i -·- .. . - ~ 
REF ID:A66402 

,0) .. c.v ------ nr:. rable to establiab mms otbet' than al.aopata., such na PWl .,, AlaxarlSer, 

and so on. cniatte the 1RQ' 1n 1lh1ah a titan er initial bPeak 1188 mad$ with 

l9aped to the Roeet.ta st.ona. an:1 B&n>tian ~ .... lWlJI' read. 

1\. Re Wl)P tort.unata that tlWI 8111")¥ ~ ot ~ didn't kam 

that the ~ alao uaed .,-p~ I Som at t.beU -1.ttnp ure mt 

on.\r. ~ ~.· but th• a1oo had ·~ hial.'o-

~ I Hare, fart inatance1 ie an ee ').le o£ aubstitut.ion. 'Baa" 

char~ iii plaoe ol f.h1s one mans "to speak."_ You oee the .f'1npr 

:,, • ... ~ .. 7 Maw' I • going to 3UJll' to the period of the Civil 1lar w t.he ttwar 

ietaaea the staw,_11 1n u.s. biatcr.r• Here is a picture ot a c1]iler deVice 

uaad tv the eontederate ,uw.y.,. ·oapt.ured at v~, one of our 1tl188tD 

~ The de"l1oe 1a a Cf'Under covmud ld;th a sheet of papc- bear.Lag 

~ ' al.phabete1 the alphabet.& or~~ tabl.alJ in othor 'ffCJrds• a ?cint.fJlt 

ht. ,-ou could alidet and a tbud> knob 'll'lth 11h1ch you could turn t.he 

o:rJ.:S.nder acco1'ding to tba .. latte.rs. 

1here is one person I pe.saed ~ in ge1;ting to the Civil ftar period. 

?dgar Allam Poe, in Jllh2 or th~, kindled an intel"ut 1.'l Cl')'pto81"~ bF Ida taom stor¥ r4 111M Gold Bua1-" and 1"' sme art.ic1e8 cm 

~ :ln .IWIJIPllpel'8 and ~GUl'l1Dla of the period. 

ttaN 1o a piat.utre ot a mssaap,. authenUo 11itllwt quest.1.on1 1lhidl 

waa aanti 11¥ Preaidmt Lincoln t.o Gena ~ It•a 'ffrJ aUple. I\ ' ' 

reada fb1a Wl'.t ot eouna, anr1 makaa no aenseJ ~ it 7011 read 1t. baole118l'd8 1t mkaa ...nent .,.., •u I should. be in a bCld ott Aquia 

CNek ~ dale \uiaGt'l.W, ~ ft9nil1flt could 10\l without inconverd.etloo 
1188\ ma and paea an ho-.. or ta> 111.th m? {Signed) A. ~... I tlW* 

tbe PNld.dentt ._. ldddi.ng a b:lt. 

:-=q~~ '1h18 1a a photograph ot a pasa or two tram the coda book am c1pW ,. 

s:fBtal --1 by tbe 1-'-'81 Arrll/• D1e,y had 11hat -j, oal led ""route. 01~, It 

~ 

'that. a, • •t.ri.Z with :b:sdicatians ~ l'Out.a to be tol]CMJl'd in 1nacl'iblQS . . A 

IUd ~ the Wida ~ the weage. ffc'te'• ha 1U'l write the 

fOl1hJ then JOU t.ake thm out aocordi.,. t.o another J'out.e. ml heft tho 

thing 18 complicated. bJ' the use at azibit.rar:f equ1.:n.1.mts fer the MMe 

ot ~people. "Preeident ot the u.s." is~ by •Adld' 

or •Asia.• It. bad two equivalents, 70U see. ilare are saaa ot tbt namee 

ot famus or 1f911-tcnoam Qff1cers of tba\ period. I ha• with me ~ 

the cc=plete set. ot cipher books Ull8d ~ t.he :hderal. 1.'U!lr{ dlr.1ag that. 

per.1.od• am after av 'balk those at you 1lho llish aq com up and emad.ne 

'."\".; ~,. t.h.era, together with cenain other C!ahibj.ta. 'l'he next allda is a pictm'e 

ot a aesaaga sent to aens:raJ. Grant. in one o£ these route ciphers. I 

\~ 

r---

1 Thal"e 1a an example of a ~ of &80N't "lll'iti.118 eq>lo,oo b.?" the 

Ftendl 1Zl tb8 ~ian llal". It consis'ted of code groupa writ.ten 

out lJrota a code book. You ~ t.ha' in the Siege of Paris the 

FNtlCb 1R9l"9 coq>le~ cut ott, ao that aeasaeaa bad to be aent on • 

pigeon. b maaaga waa photographed· dom, and - tM.s,. I bellme, -. 

the t1r8' and .earliut .,_.,ie ot lldo.ro 111"1t1n& uaed tor m.JJ.tal7 purpasee -

\...____ 

08l"l'ier 

_ p!aeon. ~ 1s a ocw at om ot tbe exn~. 

14 

-§~~!<~[" 
REF ID:A66402 

.. -. - ,.. ,. -"" . ··~ 

After the Civil War 1 or 1'81" !Btuoen t.ba State&, t.he ,_ ot a,ptolhPb1" in \bited states m111t.llr,f' attairs mnt into a daclJ.m Im- a long 

period ot peace, and waa brokan an1'1 ~ qr the Span18h•Ar:l9l"ican 

war. Jn llBS the war ~ puhU.abed a code cellect •Cade to 

Insure SeoNcJi" ot .Talepums,• bllsed m a maaU ~ code, alm9' 

1ID1'd !'or 1'Ctlid. I have a COJ11' GE that 111th m aid it J'OU Tdah to 'R&Vldne 

it 1011•U get, aoaa idea ot bow naive we 1lllN in t.baae dip I In the 

Spanis..'1-Aaerican war there na "lf!/l"'J little use :aade o£ aomd cr.!Pto-

~. ftJe 118 used the.\ coda, which had no Sl9CNC.Y whatnerJ but tnen 

w must JlllD8ctJer there was no sudl thing as radio in thoao ttavs. ai.thezr., 

In 1899 the Qliet S5;gnal ot.t1cer undel"took the preparation at a suitable 

code. Eco?J01V iras streased • the ~ Siaml o.ti"i.cer 2!1';!2?1'4k did 

bT the Adjutant General. In 1906 a revision u~ that was ::.:mhliahed.; and 

in 191S a C03pletel.1' new code• the ".far ~ Tolegrsph Coda, was 

pQJ)l.1ah.ed.. But;, baline it. or not, t.hat code was printed by a~ 

hOU88 in ClnolandJ \.Jc\,.,......,. 'tta. U.$. ~ ~ Wi.iJ!" ~. 1'~ i~1., tp,__. C4... ~-~ ~ ~"'\ ~:te...~-4.~-~~·~~-i.o..iJ.tl.4#~a-~~ ~ ~ ••'.;;:,t°tlU1 

We olrae nmr to the iiorld War I period. With Kerts•a d1nowly ~hit~.,;,. 

the ao-aal.led Kertsian 111mJS am Marconi ta ~cal demonstrat.f.on ot 

adgnall'\ng 'b;r ~,an• 81"& in milit.ar-; COSPmicationa ._.ushered 

ill, and also a new ea 1n crtPtolo«.r• '.the .t1rn w1de usage ot 1dralees• 

or ratio, u 1\ aoon cam to be called, was in World var I, but dlnalep-

..tta 1n cr,ypto~ laggad a bS.t, aa w &hall aee-. 

F1Nt, I will discua the tact.ical use of d.pher 81'Steas in world lf.r 

x, beeame tlleee wwe \J8Gd in preference to oode eoatma, 1lhidl ca. later. 

(Ii·. Here 1a a picWre ol a c1pha r;atm med b,r the Ru8aiana. You w111 no\e 

----
REF ID:A66402 f·' 

... . ...... ... -

that. it ia DOtbirls but the ~ pr1nciple all over &gain, using 

~ 1natead ot letwn, tar it repN&mte ~ a cua itttolnng a 

118\ at 7 or 8 alphabet.a uaed J."Gp8U.ti~1 b.r a key' ~, tor 

1Qbet.t."1't.ion. !bis waa the dlllo:iphw1Da table.- 1be ~ alide 19 c. 

(~i) piot..-e ot a ~ c1pher .Pt.ea used by t.he FlNneb. n 1fa8 a 

tn.napoa1.tion qatam, tJie colmna being hen \nnaoribed according t.o 

the~ JavJ 1n addition, certain dietuzib'ina e1amanta oame int.0-

th• i:aethocl 'by tald.n« otf the letteft in diagonals.. And heN 1a a 

~ ot tho s;yat. used by the Italian AnV in "Korld war I. Agan. . . 

1t Ja ~ a 'qriation or the old ~ ~ Here 111 a qetem 

r-· -, .l~: · t.aaed by the 00r:aaas,. immtGd bQ' tbea, or, I :Jbould s.ay, it was a 

co-minat1on ct tno athoda ?'& toget.b• 1n a vez:r clever 111\7• We 

c:alled it the AD1'0VX t:d.t"lhm' bacawse the cipher 1'.eld consi8'ted aclusi-voqof tl\ose l.e\tera. An alphabet in hG1'81 arranged accordl.ng w some prea:rrangad plan, with the coordinatea ADPGVX; the ~ or the 1!188sace 

wre then replaoecl 1"' pain 0£ coordinataa; tot' a.ample• the let,.ter R 

ia :repreacmted by' J,.0.1 and so forth. '11hen a mmeril;:al ke:f 1 de'ftloped 

t.rm a_..~ is wrl:ttc ner the~·• A'a and so .f'C!Mh,. cd ttle 

letten are then take out. in calt11128 aecordins to the kef' onlar. !hat. 

.--as a brand mw thing in 11111~ C'l'3'P'°lr .cplJ1' arid ea.ect DO end 

ot headediee tor the n11ed ~until it ns d1.aon•\id ~un 

h~ the eo1uU.on ooulcl 

•' 

be aotd.eWad. Dus aolut1on wa ~ a ~ 

solution but depellded 1JPC1D apac1al ca111s. but these happenild ao oftal 

ttat. • cou.1d. bank: oa tlBI cacurring. !hat. G.pbe1" .,at.a .. uaed bl" 

the Ge:run b1sh com.and aid conaeq~ aomeone soon d1acG'WNd that 

l6 

1. 

' . . . ' =· t. 

.......... 
REF ID:A66402 

SECRBif TOU made a cb8ft baaed upon the mambor o.t' ADJOVX maaagee intaroepted, 

1ltq' )'ma CDu1d '"llCIWW aerWn tbinga about the taat.1ca1 sltlBU.on ~ 

llOl'8 :laportan"" 70u ooul4• 1d.th aoae ct...- ot aasurance1 pred1ot 111hat. 

Cb~ ld.&h' happen. !h1a 18 • ~ 11b1Clb • '°' up 111 t.be ,. ... .-

tlJ& ADPCVX. ~. 1'b1a, gent.Uam1 is tho -tint W.'18tr&Uon tha~ 

. ..._ I:...~. 

' J -::... ,--' 

......... _.... 

I JmOll' or 1D bistol"T ot ana at. tho baaic prina1ples ot Wattle ~ 

and tra:r.tLc 1ntell1..-.nce. '!he ~ elide gives a ~ or t.tw ..... 

ot ·~ w iauadi "Bullet.1Ds8 that w put out. when the ADFCJVX 

mesas.pa wre %'Nd. Here 1a one ot a set ot ....,., dated ~ 20, 

UlBJ ot courae the war was ovet'i but this giwa: 'fft'Y' i.mportant intormation about the ws.t.hdrawal at Mackensen •a ant" into Romania. ~ere is 

the aernan tat and tJl8N is the translation,, an intenat.ing and 

For tactical maasagee the !ritish and AJm'icams in wwld war I uaed 

a method knmm aa the Plq.f'ail" cipher, inwnted ~ by Lord I.um 

'PlB:"Zai:r1 but he d1dn·•t ilmnt it -. Sir Charles Whe~'tstone irmmted it. 

!\V'-th~, Mieatatoae, 1lho ia eredi.ted with itmmtin; the eJ.ectriea1 

bridge that. 1a lmOlm by h1a name, d1dn•t ~ tna' bridge - a chip 

.l1Ulecl aiz.1av realll' did. 1'be aethod at Pla;rtair enc~ is to 

ha've a aqaaN S s ~ 1n 1lh1oh 10'1 •~ in with 1. k8T wurd1 thm the Net 

ot t.h• mmed lat._.. ot the o.lphabe~ (I and J are ~ted aa the .-. 

1o"81'). It rm an.tt t.o encipber •at,tt the flqUivalant 1a •wa, b.1 d1agonal.a, 

and ao •• Thee 1a an example Gt haw a masap 18 encipbend. In tboae 

c11qa, · 1'1b1 that w regarded aa P1"•"7 hot, nutt. In tact, an ott.l.ce&-

~ the Alllitioan A1!tlll (later he became at1et Signal ot.f'J.cer; !f,ajor G enaral 

17 
~i ~~) 

REF ID:A66402 

~)wrote a littl.o treatise, publiahed in 19.141 in 1lb1ch he 

· dealt 1fith this Plal:ftm cipher &::>'8tm. 1'he tit.le ot Ma work ia 

•• .AdYauaed P:ro'bl• in ar,pto~... Taiq1 our wt el.emeataz7 

students are (£'1'V91 thiDga ot tha~ 8°"' to sol'f9 attar at• leuons· 

ibe Briti&tll t.nq proposed a o:1phGP dlm.ce 1D TlGrld )1Glt I. ~ 

had ~ a great mBJ.'f' ol the and distributed tbousandsJ 

that proposed to the Frencl1 and the Ane:ricans that t.tuv use tho sam 

~ tor tactical comunicati..ona, ant it was newr put to uae tcr 

Na80118 that I hope to tel.l 10'1 later. 

' ' 

3olr1 I'd ~ to SllU a ta worc1a about codes am code qstams used 

son o! dic.ti.ozmy in which the words, ptinaos and sentences azra 

~ntabl.e l:rl' arbitrarJ g:roupa 0£ letters ~ figt1N11. ~fare ia a 

' \ ~ .. 

: 

1 

\.~ ?aQe trora a ~ telspatii or cmrsarcial oobl.e ~·· codeo-

~ 1lbich theT ofblr to the1zl cmatmaers. Ioutll mtice that~~, 

o! t.he&e code ~ups di£!Gra b'al ftffr"J o+.Jier code group by at lean 

tor ~iaV!.ng such a dl.Uerential is tha't 81T01"8 are somati:ms aada 1n 

t.l-anm1ssim, ~ the likelihood o~ mald.ng two 8l"l'OZ'S in t.he some gl'Ollp 

la ~ nearl.'1 as greo.t aa :aald.ng a single error. '1ba 2-letter 

d:i.tt.-ential ati'Orda methado of renctlll' correcting a group it i'l haa a 

edng.le GftW' :ln 1tJ '111:'11 a bit SZ9 trouble 2-letter dl'l'Ol"5 can al.ao be 

coaeated. 'flovl, coda boolca tuY1 cadea an ~ to be r.:itecl to 

gGrJal'Q.1 * spec1.t1c k:1nda ot 1:Jwd.neas. ~ aro genwal1zed1 like a 

flC'&"al trade or eh1pping coda, or a code tor tbe automat.iw :lnduat171 
~-

~.11 . 

. 1_~,: 

REF ~~~.§..6...402 

and so ODJ but thq my also be higbl;y specia:l.isad in ~. 'lbe 

naxt; slide ahOll8 a ~ apacialiMd code. You knal:r1 there a.re certain 

people who belifta firmq and 'mpl.ioit.lq in the poaw of heal 1ng by 

euggeation and what DA, and heft 18 a picture of a code book put out 

1:f.Y a pn.tletaan mo was a p.roteaaional •in tba~ t.Lold. Youill not.1ee 

tmt the purpose ot it ws, ot uoune, to be able to receive tree.~ 

fl"Olll o~ by 10ur aan precti t.imwr no mt~ llhere you wit. 'l'hua. :1l' JOU 

~ ·&0::.• .a \rip am ant to consult Tour prao\iti0ll9!'.t J'OU can aam ?Im a 

' -•see mxt Wll him what 701 think l"OU are autter:Lng ~ Of courM, - ' 

7011 think you are suti'ering ~this, that. or t.ba ·of.bar t:Wlg. 'ibe 

code is in Ealglish aZ'Kl Frendl, and you 1iOUld siraply represent :JOOr 

1l.1.nees;1 or allegad 1Jlneas, tv a code ~· Jkstl~ note that the'~ 

3111 who got up this code as prettq well vS"SGd in the 1ntr1cac1&s ~ 

coda and cor.mamicaUcns dUf1cultiGa, because these cede groups dit~er 

by' n least t.':lree 1attors eachJ the reason, of course~ is that it would 

be a pretty serious t~ling if' ;1ou sent a ~ a¢nc that. you tbink 

.,.1...,,~ .. a.....i~:..'4 

7CU are sut.taring t.t-m ~ biz\ the ~ is garbled in ~ so ~~..,~.t~, .. ~'tf"l· 

Ula ... you get the treatnwmt toi-~ 'l'bat zuld bo ~t.Y t0Uf11 l 

.Prior to iJorld War I the use ~ c:ode bDok:a !or t.actica1 purpoeea 

WU thought t.o be impract.icable, larpq because of the ditt1cu1t1ee ot 

ccap11.Y1g,-~ diatr'ibuting and protecting the booa. I dontt 

1ibink they thousb' t.oo a.um about the possibilities ot 8Dlvins cadet 

,, larq in 1916 tb.a Genu:na began to uao t.leld caiea1 and the 1111ea GOOD 

-~ 

t\/1 fol.lawed ~-t. I had some slides to shcnr 70u pictUNS ot pages or the \ ~ >-

rt code ":DOka of ~he Tm'io\18 bel.lit.-ante1 but. I will o111t tha:a and sq 
...... 

REF ID :'A66402 ··-~ 

thU I also ha• brought adl1tx1ta ot auah boolca au wre aotualq U88d 

tor the puzipoao. 'lhoae who 1'0Uld lllcB to see •ha" ~ mre like -. 

1l'e'.Lcale to come up aftel- tJ-..ia Wk and e;maine thera. 7he onl¥ al1de that. 

I Will ah• 1s one th.8' 1dl1 give 70u a P1cfmre of ~ ~ .Ancr'• 

I didn't mks it up • I found it in the records. I~ta a code go"9rl 

out bT the S2nd IDta:ntt7 Bripdo, dated 17 April 19186 am it 1a 1'hD 

w caUad •'the b4aeball code.• U you mnted to 8113' •Jdllad," you said 

ttstruck out-J~" 1188-represented by "hi\ b.v 'pitched ball.1 8 Md 

so tarWl - VJrJ ~· f'-..X ~ .... A.- Q ~ ;U:-(4,N~ \fu A-t=. F ~i:t&a, . ~ ~ ...;_..~ ~ ¥-&. i: ;]1;..Li~q .... ~ .. -"\ --''·°""{;;. ..... d..Q..\1 • 

..,. Mos . I am com.ing to a ftl"",f interesting ~e ct the use ot ciphers 

by Geman agent-a in the 1'io:rld War I period. Rare is a cipher ?!1888&88 

•blch 11aa .toum on a Geman spy !.n the ::ad.ted States aocn attel' ne 

CS'0888d tJB ?m1can border into Tex.aa. A.~ som meka it waa 

~-.;.i·, deciphered. 't\Y' G-2•a ~vin& org.aniaat:ian in 'tJashi..-sgton, E-8, ae 

it 1111& called. aare .ta the decipbered GerJWm tan, and this 1a mat. 

it saidt •to IJ.he ~ Conalllar att.i.ciala ot the .Republ1c or 'lmdco. ·~· .;,..--'$- -·-

~ Secret J '.lhe ~ oK tb1a 18 a aubje°' ot tee ~ 1lbD 

trawJa u a !l\ltUJ.iMl -wlSlcr the name ot Pablo lJ'abarGJd.. Ke is a Garman 

........ And 80 tot-t.h.. The ~ aentenaed ldm to be shotJ Prea1dent 

1'111.sm OO&lllUted it to lite ~; am he \'188 out of the PoklV atter 

· ooJ:y om JUr I 

, :~ --·-·1 .. ie a •• .._ 1lh1cb 1a pro~ t.he most. .tamua massage m . ' 

~~} \~ p'ltiHabed ~ bi.-,. to date. Thia. 18 the '*'880 1lbidl 

I 

bnvght tile. lld.W St.at.ea into U'Ol"ld War I, on the aide ot the Drit.1.ah• 

20 _ ... ~ 

~-~~--~-
REF ID:A66402 

~EC REI 

In 1'l5-16 it ns "lfrJ auch ~tch-can as to which D1de the 

Aim'ieana .... going t.o join. 0'8' irit.iah b-1enda1 lA-te our aJl'es, 

did certain things tbat w didnttr lilcB, and there vaa a pd deal ot 

the o.mn legation :1n aaioo Cit,,. troll Count Von BeftJStmU,, tho 

OeraaD amhase~ in Washington. 'the met.bod ot sol.ution I won•t go 

into. 1'ho:U- al~ in tJJs bandJ.inu ot the casu 1a a good Ulust&*ation 

ot b• astute, d1plomtica111-, our British~ are, .tor, aa I baW 

........ ~"I. 

: __ ~ J ab9adT aaid1 it. Z'G&Ulted in br'ingiJJS 'QB into the :far on their aide. 

!JC"e is the tnnslation ;;,f the tiling. I\ l1B8 !qlorto.nt becauaa 1he 

meaaage 881d the lierllarm were going to reaum 1.Br98trictod subaL-im 

11al't'are and this part1 here, daaJ;tng w.itn a deal with amctco, vas the 

straw that broke t.'le camal. 's back. ?copl.o in t..."'!e ait.tdl.a ifest 1181"8 

"ff!l17 l~ tatrrard the idea ot our getting 1."'lto the "las.- - on e1 tber 

aide - but wtmn the '~ begall t.al king about rdurn1nc to !taxico, 

Tma, ilalr Mm.co am Arizona, t.hat. was soset.h1.sg else again. so, ._ 

got ·into the mr within a couple o£ weeks after the .aritiah &a• ue 

and esta.bliahed the authent.icitf' ot the translation ot "the~ 

• telegram.• 

.... . ' ~ ' ·~ i ..... Jl 

' . K 

~ 

\ 

,---,,,,IP~ 

Hare· 1a another waage solved 111 WOrld War I~ the ~it.1ali and 
REF I~402 .. ~-·..,ie. ~ .;--

j 

J Coan! ssion• in which the Genaana w.re charged with certaiD aota or 

/ _ eabc>11.ap, notablY' the K1ng1and t:lre am the B1Ack 'l'am ap1oe1on in u.. 

' I· r -- ~ Jeftlll.1• ~ or rou are too 70un& to remember tlloee 1nal.dente. 'J.he 

1 \ Vial resulted in a decision 1n favor- ot t.he trnited Stateo a1ratm1nte. h~_,..,.,--;:-...... { 

:J ~}: 1 1lbo w:re all81!'ded scm $b0,ooo,ooo. Hen 18 a •uage,. in....,. ink, l1 th.at figured 1n the Black 'l'm CBstu a -pase trom the Bli+c* UBgatdne, 

)

-on--11hi-ch_there__ .._ a message 111'"itten in invisihle ink, a ~- l"\1t1 

- 1nW ocoaa1onall¥ enri :In axlel"n ar.tare • 

. ._ j Gemana f1nanced a large n\Dber of Hindus in their atteq>ta to Air up 

a rebel11on in Ind1a1 t.1'te ~ to cause so nwch 4:.rouble !D India 

th&' the British would "oe !'orced to 1fi thdrmr tmops trm the 'ieate:n 

fnmt. to quell disturbances in India. 'Ihue Hindus wm'8 nagoU&Ung 

for t.~e pUl"chasa of al"JlS and ammuni t1on in the UD:Ltad States and sendirag 

l.awa to perm;S.t :sudl tni~ against a triandl1' nation. So t.he 

buslN!lle had to Q9 conducted ~ and that ls half c:r:IPtoeralettezi that waa .1nt&rceptod between the top Hindu agent 1n t.ha United States 

and his chiot in SWitaerla:nd. The letter com18tecl ol groups of i'igurea1 

in whioh ware intarspel'aed som pla1D-taxt, wm.'da. I :recognized P"'f¥ 

cp:lo~ that. the letters or the -~ had been :replaoad b1' mmd>ara -!.J,r ' 

Yltdoh izKHcated epeo1t1c lett.ara 1D. a~ Eaeh groq> ~ ma118ftt 

~ t.'te page maber, the Um maw, and the pnattion maatmr ua 

the 11ne ot itl• let.w. All I needed waa the bock, l:Nt mt~ 

tile tUndu tail.at to tell • mat the book .... ao I bad w go ahead aad 
1,,.:-::-- . 

REF ID:A66402 

......... ~ ~ ... ·;.-

\1',V w eolw the raaaaage ld.tbout it. It waa aolwd1 and I'll s.1lolr 70'1 

'Nt7 br'le~ tbe mthod.. As I aaid1. thora 1181"8 1110l'da1. ~ 'lf0l'ds1 

~ ~t the e1phcat text, and I TJOUld maka a gueaa a• 

Wiat the JlUmri1ca1 g1'0q> bet02:e ar attar a plain-tat word ~~ 

Hez!e• tar eaamplet "1'ormlld ~ w.l.tb soraDthing•" I aanal 

'tha~ ~ first; ·~ 1R>Uld be the 1IOl'd •cam.it.tee,• am ~ 

UJel'U'Jt. ~ on pep 6S, the fOUl'tr~ 11ne1 the second lattezt in the line 

waa a CJ the t.hird to be 01 the tourth Ml t.t'l.e f1tth anatbe1" x, ~ tbe. 

sl.11:1h. ·~ in that. lim sa not indicated.· Inatemt1 the DBXt poq> . -~·:( , 

juaped to another page, ll"OB mich t.he lottefs I, T, T1 and so on 1181'8 

taken-. well• b:r subatitut.ing sme oZ thelJe guesses in their proper 

posi t1o.ne and raking Uibul.at.ions 0£ this sortr1 ! aesamd that the .f~ 

/ ·~ .;l ~ t1w lettara ot t.hia 1IOft1 1t.CQilD1 ttee.n CW!18 !rm the word "cmmmication" ~- ,,.. :,r· -;. ,,. -~ 

on page f6s lim 141 the next t:!l'ee1 bocxa a ward~ n'l.T:d' in it. suc..'1 

Cs:8 

ae 11ut.dntionit J but tna last letter, 1,/~ anotlur pao-e altogetber am! 

I eou.1.d ~ add :aore data boEora mld..'1& a1V' j,;."USSS as to mat the word. on 

page 72, l1De 2, ~t ae. rtf' world.D8 back and torth1 building up the 

'various 1IDRla on '1!1r'J.oua pages ~ the book, then bl1ild1-ng up the wcrda ot 

the meaage - oaa helped the other - l ~ got certa1n clll08 aa to t.he 

801't.. ot book Smolftld - tba' it ma a book dealing 1l11ib the~ of 

Gen:lall politic&l. pn~, econa:v.. or histar:f• I hunted and hunted and 

hunted tor \ha\ booka I t1naJl3 f'o*'4 it, all right. It was Pl•iae COUier•a 

9m.'!!1" and the Ocmlans. 'l'hia ~ .figured in a 101l8-dram out. tr1Al 

in San Franc:h100, 'lb.ere tht1l'8 were about a hundred and t.Lw H1ndua on 

W1al s!aultaneauslJ'. one ot the a1alua turned State's fti.dence and goti 
~ \-.8 '"" ,.... 

i 

' ~, 

t-- ... :''.'-' . ' 

u -i ·I . 

1 . 

REF ID:A66402 

~EC~!;l 

himselt in bad w:S.th ~ othen. 1':181' were aeucbed e"lt!/11y ck\v' beto1'8 

t.b9¥ 08ll8 into tho ~. but oaa mu J the da;r attar .I testifted, one 

li1ndus memaaed t.o aecrete a gun in his clot.hes and during the ml.de~ ot 

th• proce1Sd1np shot. the HiTldu Who had tumed state•• O'Widsnce, .....,,_ 

upon the 1Jnited states marahal.11 a great 1n& tel.law, six r.- roar. 

atand.iDg in the ba* at the couz.oit., dNw bis "86pOR 8l1d shot the .am 

m.mu dead. The.V' _.. both dead riibt then, nthln two or three 88CO!lda. 

'lhat's the ~ tbat. trial ~ up, drmatioal.l.7• 

haY.l.ng solved the iaeaaages vhicb. disclosed aoaa ot the fa.eta that lead 

to u.r .. hll 'a ~ to pr1scm. Je was 3ecretary ot the Interior, it 

(' you NCall-. I think he died only recent:cy. . , - . J ~~ .. '('t.,~~)~ ... ~il;;.,..... p ~ .. ...,.,.'r""' 

l..---· The !'lD rtJDrJerS in tnoae lamentable <h\Ys ot,._ ~bi ti~, -~ some 

-, _ Ver:/ good codes am ciphers.. :le.re is a ~ular case where a 2SRg8 ..... ' 

was enciphered 1'I' taking acde groups out ~ one 'boi:>k1 transt8l"l"ing t.he 

code mDbeN !or those groups into ar;aether book and thm adding a 

ccmatant wlue to those numbara, f:j,n(i!ng tr.a lotter-group equi"t"al.erlte of 

the t1m1 numben1 tnen encipher"inc thaee letter groups I 'l'h18 na 3Udl 

a masaage., All I had to dons to .t'1nd the taro code book&, the additJ.ve, 

and the cipher alphabet.. Li.di~ struck om n:1c;lt am the job 1111!18 

completed 1A a few hours. 

~ ...., 8Cll8 1ntm.-esUng thi12P.t working on the job in peaoetiaae1 

1'lhen w wuld ~ ~ea froll various ~ agsdee to solve. 

2h 

~ ·-1 '=""'?' 
REF ID:A66402 

Here ill am that came to t.be 74lite Home am waa .. to us by the seont 

SGl."t'1ca. It. 1188 addl9888d to the Preaident and had tb1a dagge:r nuck 1n 

44·\ after th1a message. It 70U :read it baclaml'da arxt taka alternate 1Rtenl 

it. aa1md ~ Rooaavel\i "Did ;you GVar bite a lemon?" 

?bf I ma going to j'Zp to the qusat.ion at ci}M%' ds¥1cau, beca\188 

tMt ~aaertt. the modeziD 'Qend• I'• alread:r .ntioaed to 7011 tll8 

point. abouii tbe inwnUon and inUodmtion into w.Ldo usage ot radS.o1 8lld 

their e:ttecta 14'0D milit..arJ1' ~. eapeci.all,y q:tOZl C17Ptology. fN.tt'1c 

·in lal'g8 quanti'U.ee beoame ava1 lable tor ~ am ~" a1Xl 

hence ~ 1n ~ had to coma. It cma slotc'l¥ bu\ SUl'Gl7· 

In connection llitb t.heoreU.cal advances in Cl'l"'JPtographio mthoda care 

irmtntiona o.t c:r-~c dev.ices end =acrd.nea. A br:Let h:!.atar,r ~ 

4 ~ th8118 wUl t.hertltore be uaef'ul. 'lba't is a picture of the earliest eni>tcgraph1c dev.lce on record• ex~ tor the ac,rtaJ.e. . 1.hl.s is talcDn baa a 

baak btJ' an IWian named ~. published in lh101 and !a just a pair ot 

al,pla'bete• one revolving· concentr.ical.l;/' tq.>0t1 the other, so that ;rou could 

change the rolat.tansb1p ot the two alphabets. lbia meel is ~tacl 

also in the Port.a book• and1 ~' I !law with me todq a ~ ct 

the ,or1g1nel oditian ot Porta• With the c1pber 1lhee1s in place and 111 

~ om.. !his .. publiabed in 1563. Theu didn't ~- ant cDildPen 

in thoae dlQ'a• ~' or ~ these things euldntt be bal'Bt and 

- ! .(' .... -Ji ·-· - ·-:. ....... ~-\. 

~ 

I laww 1" takal a 1q t1m to get a patent through the patmt o.ttica, 

--. 
REF ID:A66402 ·-

--~ 

@~~ ... - w.as - ...s bJ' tlw lli&INll (!ozpl al ... 

. united states ..... a.' ~ pc'baplt, 1n \be pm'1ocl U:lO '° , 4 l ·.:- ~· _ .ihezre 18 a_.. ....m ~ ot the ... thin«• the patent. 

jdftoe _doeaat' ... coed. ..... to 11-.tiila"e .od t.he '11Ub3ect ot awt.o- . ' . 

· .. : ~ J.osJ, .. ...,, -- 1n • "111dlAt •. 'tldnl .... b - old .. t.he bUle -- .~ . ' 

~ ··: ...... the pat.a om.ea. lfOlr • ~ to an 1AteNat1ng ·dat'l.ot.. I 

;~,~a lit.tle W1dl.e ago th&' tM a-it4ah J'Z'OPO••rl a o1pbar dn1ca . . . - . ..· .. 

·: .t,W ,.. on the ~ front f.n. arw \fa' 1, am a little blt ~ ~ 

4 <( .. ·. of that deve1oJamt is ~- H.-e ia a pic'WN ot • dM1.ae 

in'tonted bf 81Z' Charlea -...tatooe. the ednellt lritlah athemaUcia,.. 

JlbtBioiaf, and .e1eotrical -o--. Be waa alJlo a oryp~ ot ecae I 

nature. The prlnalplAI ot t.b8 1b•tlstone cipher 1lhe8l 1s 3•' a lit;t.18 

dittennt t1"0ll tJla' ot .Ubal'ti.•a e the S1gn&l. eorpa. '1'h1ll ..- ha an 

alphabe\ ot 27 cbU'actaN and an~ alphabet ot 26, with an eocezafzie 

aou.on 1ntl•naed tv tbe 1ftWn that, J'OU "'" aot~ gOing to enc.iphe. 

With thte hand,, you ... , 7W go aromd tJ1ia ,..... and, tor ~, u· the 

latte 11 18 ~ br It an tho Dad JVVOl.v.t.1.on ii 1a repzeam:atad l\v 

·the..-. letter, 1lt&iob. ha&~ to be av tor v.t.otor. b the a-it.1.eb. took tnat 

. -·· 

'baa1o ~ and aoupacl 1~ • a blt. ~ )'OU DOUoed tli8' OG the . .. 

. ftft\ e1Sdrt the oute ·~ ~ Of tile 18'W. 1n llR'M2. ~ieb '· . . 

J 

'J 

~~-Order• ,• . OD thct 1nlJW ~ the 18\t.anl wee iA 11\..s ... llld - . ~ ·. . 

"'. ~. Cud ._ • add ibe idea of a ldn4 8lpbabet, oa b oatnde' ell' Out. J'Ptrabft. . . ~ \ . . 

.. >•:._:- ~ Gbars.aed the , ... ot a.:-~ s.t1e1t ..... .,~ ..... ple 

4 ;~_.;~~ Beftitia. ~-bad .... ,... ottbw_~~--: ' . ~i'.~ ;1 • at. tha\ u... in the ""'- ot Ul?, Wl4d.ns ., tbe .......... ~- .. · ·: - ~ ~ ,t ~t I '. k ' • - ' ' • a':• ' • 

.. · '· '• 1t, I• 

•' - . " 

' 26 

~ 

·- ---~ .-tSi·;:~:.~:.~--~--- _ -~ --~--~----~· -::~~-~.'.L~--~---"-------~~-----~~-~~j;JEi~~~~~------· _ _i 
~. 'lhie thing had m.a appNWd 1:v iiha Mts.m. the PJlmah 

aadtbe~~inlm'oPlt• It-.Gea.t.w~ 

... t.ltMt IV' \be JII-8 people, Im\ .-1b0d7 ... ea.id, awen, let'• 

1M 1111&• thia tallow M SD ,,,,..., Udnlar about l'• 80 tiJwr _. • a 

_.··_Mt· ot ts.Ye .,_,. aboft Wt. ..... Gnaipblll"fld • W.. dtrd.ce. All I .. ,• . 

;. _·. 

~~ 

VA ~' 

t.. 

~ 

aa tba\ a dn!.oe baaed ..-lbeatdoDa prinoip1aa wu ~ 

.: .imoi-. - ~ --to - and ..,.. 118 theae ft• ........ eaC!b .. .., , . . . 

: ..,...eae ~ 3S or so 1etton lonG• He aaid, "I want 10'1 to aolw UU. ·-

. :· ~-~ing.• l eaid1 •But- I oan•t. solve ~ aa ahorti u tlda• Itta 

-._ 8bawd and u111r. I dcm•t; ant. mv pan ot GUl:h a teat.. Beaidaa, x 

b6"l8 crtber f'illh to trr•" He aatd• "Iouna man, on tho laat dQ' ot eGCJl 

math you get a li\Ue groan pieae ot ~ with "7' name in the 1--

l"lgtrt band aanaar. U 7011 would l11m to continue receiving those pieoe8 

ot pap91'1 J'DU 'ld.11 start. work OD ~hie ri&bt. amr •• I said1 8Yee, Sit' l" 

.u.. "3 bocaa pooua 11bich I wcm'' go into. l auooaeded in reacmetl'UCUna 

what X t.houabt - 'Ula bald.a ltJr the rddng ot these let'beN in ~ the 

letters ot the 1wr alpba'bet. 2ha ward on 1lh1cb itt sa baaed ••'*' 1D 

be the 11Drd •o1pber1" a.ad I tbou;h\1 ltffell.t ao tu ae good.1 but- ~~ r 

. thee i4 no _,. ot NOOnStruoUng :the outer ~be\ 'tf" ana1¥ada•• A\ that . . . 

; . U.;I·hadntt 1rlNMed the prin«lple ol do1Dg ao• altboadl ._a c1oaea . . 

_ .::. ~· later I did ao. But. !n· Ul? there - nothing to do 1*' t.J7' t.o· ~ 

: : ·;~., ..... le .. -- ~abet. ll1&h\ ... ~ V1a1 and~· .s. ~ -~: •• • ~- ,• I ' "• • ·~ o • 0- t O 

- % rirldG tb1' wmpt.1.oaa · It a· .fellow was ~oolt• __,. to w a wr4 l11lll 

.. ~- -~ '_~ 1he bmde tw •. ora8 alpbabn, i..•4 ba li•q to ,..· ~ .. , .... ::· . . '.-i • > " ~I ' • - ' : -:0 ~ 

· i .. t~atad 1IDrd • t.be bUJ.a • ldl:Snc t.be ~ I t.r1e4 -,,_,,. ._,." ... ~:~- ~ ~ .._ ; .. . ·... .. . ' .. . .. . . .. ·-, .. 

. J.~_-r~·l.:~ ~~---~- ·,: ,~~- ~ ~ : - .. . .~ . .. ... 

' f • ~ . • 

~ ~ . , .... . 

:. . .,,. : ... : ... ' ' 

~-· i.t~~ii:~!-~- :.:~ :-~--~~2 .:_ 

. ;• . 

. .. :: . ' . ~ . 

........ 

- ··' 

. -- --·--·· ~-·~~~~;~::~:~·:~---~:~.~--~-~:--~~-~--~-~-~-~~:::.iiltJ. : .... 
REF~6402 , . 

.. 

·, ~ in 111/1 a1.nd with t.be word •• _.,. - atW "" otbel', 8bd 

· h_ took .Smstee to ten eaGh amas. I ~ ~ ....S. U1at •aJpbabft, 

·.-•ht.; .. U'11Uan, ~m,•ud ao m. nna1,,., l alb .. '84 II' ' . ,,.ao.rte. ·Ifft..- rz.J,ecWn, 1lbo - llF l'ilb\ bm1 .. a\ the Um-, ... 

~.=::(-~\ins in. wtbtW paft. of ~· ..._ and I Aid• tl'JDS-..., ~ JW 

.............. 11ba\, JWlft do1n& met do ~ - ~"' .. ..w, ..... do 

: . J'l'l -4 • "> do~ I aaw, "llllcl JOUl'eelf ooafGrtabloe X • ~ 

: . ., aq a wl'd to J0\11 ltd I ~ J'CN t.o oom bade; d m 1d.tb the ~ 

; ~·--1'hd pope into 70Vll! 11.i.• •-.Jllldl~l,..__~.., 'dt.b her Upe\lck ~ • '·: ... ... • =:.' ., • • 

~· ..S. ....W, "Sboot.• I aatd,_ "C1pher.• She aaW, •Haob:tne .. • -n.t .. ltl 

Ill abOut. Ml raiDuta8 - h.s l'ffO~ the .... alpbebet and aol.i 

file W8Cl8'88• ~~ tin' wup aa1d1 •2t11a cl.ptm- is at.olute1.y 

~· - telegnpbed 1Ze 801\IUoft to Vuh1ngtoa, ward '°' to 

Londoo, aid they bad to k:Ul the pro.jeot. 1hell I got te the JJll Sn 

~I wun•\ "ff/17 ..U l1Iatd by wr Bdtiah friends. '!bat ihaatatar. 

~, \ principle 1a at.V11>'cded w S1i' Charl.aa, ~ no~ J.anc ago tv ._. aacicfent 

I _. _... tilia m.1cet 1''• 1n our D1ll8ura nmr aD1 ma made lv a ~. 

. ..._,... JM&d.ta WatalllmrUI, U,.S;. A1:r1Y• I'~ was dda to Oerlerat lfflldnson• 

ot a.alld.torm";r tat, and he ~ baoeme Qdat at ~. f:low he . . 

li1111• ...._ ... ill o.iphaa I dm•t a., 'but, he ~ _.. tbla 

..... n. beara on it - t.hSa 1a a ....,. pOOP pMtuN - '111· date ~71 while 

,~1 ~ ·.·~ ~---- .-S.wd h18 da'l1oe anct deear1'bad lt Sa 3170. a._, ~' 

~~-"· •W: the~ ot the --?~~ ~ prlmdpla bel- ~to~ 

~.; ~·- ,,., w. ... - ~ wio a....t' -~}; w \.~~ ~ ~ ~' c..t-.. ·: ~. ·. J ~ Dal' t.o • oipbar de9:1ce ell~ inwmte4 b¥ a ~ a .... ~ lloi.. • • • • • • • ! . 

·.:·, .o••·...,.,:~ ~,and callecl ttae. ~ .,unctar.• fh8 .....sea~ • 

. ·' 

... . ; . ' 

t -, •• ; 2";.?·,!·:·~__:_~-------~- --· 

•.!'"' 

. : ~.:: 

. ~ .. __ _,___.~ ~ ...... ; ..-.,.· .. ;./ .. _ ... ____ .. __ ... ___ ...... -===-.:.:..~-·-~:-· ~ ·-~~1-: .. Uttfz .. 
REF ID:A66402 

~ECRC7" 

t\q.f ;.~" ot a -1Md\ on WbiGb U. -=at 20 di-set *1cb w be~ 

. , !D lcD1'1nl ..... 8Mb d1ao ~ an ~ amabar and h&Tlug a . ' ' 

. dUfaNlt. ~ Oii 1-.. 8'n1ng an 'W the d1aoa in IQv' order, JOU ·~ ._ ' I ' ' • 

;:"~up.thew-. ot.,., ~tat ........ th\181 .. , ... ._ : • ,'' (, I • 

. :. ~-'arid tor TOVr ~ te:n ;you can talce s OZft ot thD other~ . ' .. ~ . .. . 

':. -.11mt prinaipl.e1 but it 1s qu1:te nadU1' solvable theee da7a -. it· . ·~ , " . . . . ~ 

.· ,~ f, Jo- ha"re the d891oe. The priaC1ple; bolleVGr, •• r»t invented tv · · 

£o. '.~ :; ~J it. ~. 1nnnted b.1 our om 'lhaaas .te~on, and hare 18: lda 

/-ro. 1) '.'•cktaor1pt4on of the dft1ce 11h1dl he oalJ«l "the.llleel Qnlher," 11S1ng l..._~ 

1 ~ the w pr1rscipl•• I had an s.nt.reats.Jta tm dtgg1na up the 

. fa.ota in COQmQt,1on wJ.th an art1cl8 I was asJmd to W"ite tor tbe 

c1et:ln1U• edition ot Jdl.eacm'• vrit.1.ngs nmr being publl.ahed at 

Pdnceton.; In 1915-16 a an.ited State. ~ otftca by the name ol 

~ Hit.~ independen\17 ~ted that. aaiae pr1nciple aaain, th18 t.1mo 

not, in tbe tore at diaoa, ~ alid:lng efir"...pa• )'OU aeeJ tb1.a is a ¢.otur'e 

,..-/~ 

~1:1::,j ~his Gr'1g1.nal model• Ill's. !11\t oam to R1.,.-bank:, where I waa thea 

.tucating .,.U 1n ~. and 8bo bnugh\ alq bar buaband.•• 

' 

. - im'~on. ~ i"t. ns in-ettr bot. atlltt. She put \Ip a cMll.tmP _.... ~ \ . . 

an ibe deY1ce, 11h1eh I solved )V' hoc.NB pocus• J'OU Id.sh'. aq t U.Jca. t.bili 

... :~ -~ ~'° .,..u, ..-, tb1# ,.,.., .... Bit.t, 18 bam&t.1b.1 ..( · .. " 

. ~·~.Gd IO lo$• ~-~.~ft knorl a~ &bout, ~-· . "I 'fa ' • • 

. ~· .:i ., .ldal-·of a k4f' W1ll4 • • ~ t.o wsa tor atXirc Vi> the:· 11ltf1ttd· · ·,, · 

>f >~the ~' w.u, aha .tght '-.. ., 'R1Wrbank tabor&~··· .. ·.:_ . . ~ . . . - . -. . .. - .... 

- . : .. : -. ~ ·. ·: 

,• .. ' 

._ ......... , .. . .: .... . 

2J . -4 ~~ . ·~1~~t·~:. 

~ .... "' .. ·:'·:.: . 

~·.... . .. --~ .. --- ~~ ~ ~~~-;.:~~------ . 
. ~· .....,,_ .. . ~ . 

... : ~ . ... - .. ,• 

~ ~.1. 

.. . . ~. 

. ·' 

REF ~~_§402 .... ... \#~':, ,-

.9i4'"a J.\' In 1918 that. aw pd.noSple .. adopted by the Uld.ted ,.... S"'O.)... ·., ,' . 

: - at&Ml Ora'paJ ..... it 19_._ •• 111-94 danf.ce. 'llda, .. ,_ ....... 

h-~;-, 111tll. ~ --~ ,_ _ ,. .... - Sn ... 

. : tmi: ..... 1.R. Pl-e, ..... mo~ •• w prino1ple ee JtJltanan•• ~ - · ,"' :.. ... -:•.,... ' ' • r I - .. _. 

: -~· -~ ti,, •• .....,. ._,~_ we ~ C1phw Dcrd.ce ....,.. ~- , : ; . .. . "~'-';:·. i'. . . . . .~ ~ 

·. \~fl\ltt. a m1ber of ~ aftal> World. 'lllll- I with sou • ...,,,. !be ....,., 

.~_'·~:~~-,-~the a>aat Otard aleo taSCtd it. ~ ack1>t1na Kltt•a 

~' '1iiua 8tnp t,;..., 1lb1Gh l...i. ~elt be\W to ~ the ~ . 

_,/..----v;'\, .• ,.,.batt~t •So' sreaw aGCud.\)" in a de'vice w called. •Uie / !S"O l './ . .. •. · · . · 

~---~'"' .:;.-.~-or Clpher Da'liae u-Ua 1n the A:nfti• ·,· .. • .. •::"" 

· . ~- ~ 18 a pid1B"ll of the var;r nz.at SIGTO'l er cxie-t111i - .' 

--·~ tnnam.sa:lan madlina,. prodUQ8d bJr .the AM ~ 111 

. Ula, too la~ to be UGd in 1'0r14 l'&l' I+ 2be prJ..nc1pl.e .tat bate 7'*- . . 

SMtklwate a t.apa bearin6 70tJr ~ WB&le,, here 10U haft a PN'lio~ 

~ 

.. ~ \ape p...sng thro11gb. a \nnsaitw1 here is anothW ~ 

_,. paadag tbJtouP llllGt.hct Wmlali'tel'J t.be88 WjhW ate ditfaNnt an:l 1n . ' 

•.tfll.'ll ot 1oopa o£ d1tteNJm diamtan. suppoae th1a om 1a a tbou.m ' ' 

eb&r•'-5 iu ieQ&tb -1 the oti'lal'- 999. If JaU at&ft ti. .out, &1; 1n1t:taJ. 

. o~-~ ' . \ ~ .. ' illd1ca'°"'~ -.... - "'° po1n'8 ... 

. _ ... . ~'. . 

ai~"1in\U 1'0\l _,. ano~ '991000 ~I A· F8"'1' .pod pl'I~, 

. . JO. 

' . ; ; ,:· . .' ~ 

L: .. -.. :.::l-::;::~-~~·::ld~-~-:::_---·-·-· ---· _ .... _ 
~66402 

latelligeoe1 bt1' I-. able to ao1'18 tlae ~. aa l bave .1-' aaW1 

w111hou\ bav.llt8 t.b• tapes, without~ how long tllflT ....... the 

:. •111h1ne+ ft.., a long and~ eolut.icm, but. I bawn•t the -·-.. 

. . ... - go 1nlo l'-

L~ A.. . > _ _ '1'l1a is a plotuN ot a Diii' 1ilYP8 ot ~ maotd.ne. A 

. '' 

~-.-~~.the - of llabeln - 1a QaUfom1a - tl>ftb 1a .i-t. 

:"*, -~;~--~with a lar;boal'd1 arotor1llb.1cb acttl as a SW1.tching ~ 

(~· , · ~· MJl'18 CSATent t1"01I the ~ dapreesionB •ten at th1a aidtt 

0 · (a .t.bllBd OCllllltator), goes tbl'aUgb '1"• wheel here, al.ta aft thia ftae4 

·oamtator, and then to the~• t\YpdlR'1tar. am .. t.b1s maddne 

bad onl1' one rotor. In about tine or tour yoan# a.tt.er collaborat.im 

~ with the: ?fa'V'J• be oara out 1'1th a ft~ machine, t1w rotors, J'OU 

-~ aee;1 and ~ .,. the ~ ot rotoft that !le used• wb1ch gave pnlt.y 

b1gll aacurit)r • The ffaV ae about. \o adopt t.l'lese thinc•• The,r wn 

about to plaoe a oont.rac\ tor l?S,000.00 with Hebam. Har that hi°'• 

1lhm the ehiet of the ltav:f Coda and S1gml Seatian, Liautormt Stl'ubel • 

now Admiral S\l'Ubel 1.n charge ot the Ot.b Fleet izl the •ten aromat 

,,_ • told • 11ba\ the nav,r had in \be 111V' ot cull tor oiphe.r mub:lZJN I 

• ill the l:ltll(f didn't even haft a dollar £OI' t.hat eon at tb1n8 at \Ila~ 

tJml ..U.. ~ aalrad •t 111hat about it?" I aaid, •I•ll ~ i\.• 

I t$d1e4 the mat.ta :. about Ida 1llJeka betON I had a 1'98lJT good idea. 

·' 

\beft I 1Nn\ to St.nbel and Ald1 •I tb!nk I oan aol• ...._.... He 1814, 

ll'foafll lun'e to IJh• ••• I aaW, •AU 1'1gbt;1 I acoapt; 10Ul' ObaJ>-..• 

h _,4, ,•og. ._, do you _.,. J: ..sat~ •I .-t. weagee ._ '9 an 

_,,.,_. Whlne.9 He ~ m t.he ten maaaasee, m:d I eOl'val the tld.IJI• 

'-... -SE~";!:- . . 

. -. .. · ·"' . . • - - .... _.. ·~ .. -.....&:- - '"..:...-~-~ ... -
REF ID:A66402 

'>t.\;t<tr 

n 1mB .a oari01U:I ~ ~ haPl8JiBd t.o me ane fmSft1ng aa I was 

~ dleaaed to go ft\. I'd bal WQl'Jdag at. tbe pNb1aa, ot cousW&, 

and 1\ .took ••• ct f8l!lk1.Dg ~ions and t1nd1ng II(/ WIV' arourd. 

I ~ Olla .. ~ at. the U. •he wa a ~, en .-pr1ae f1&hter1 

.. _,.::•th ·..,.adttt•,· om:iU.tJ."''" _,. and aUt and m 11881l•t zmah ha2h· 

.· .. - .. 

...,... • ~· I had JllGCluaod a problss :lnvolvtng 11s111cni and 

. . _ -~~l :Iona ot alphabete to a place 1lhea I ~ oae 1:1.m ot 26 1et'8ft ...... 

. · ~ to a ~ tom. It I ocnald solve. that, one Um I wuld tul'V8 

a at.an. Well• I 111nt. baaa tbat. 9'm1ng I w.enUoned, much PftOCCupied• 

-I had a el.ear p1otv:re 1n IV' mind ~ this one ~' butr all I Jm9 .. 

• ... J" 

. that. ca:rMdn l.etten Wft t.."9 9"¥1• cert.ain OD88 d.1tterent. • and,. Of 

couna. I kept. in lll1nd Ute apeeifta pesitlcJU o~ tbeae letteN. l'Ol' 

1natanae, the t1rat a1z lattel"e wve all ditt~t,, but the Jd, 7th, 

lbtb, 19th am 25th ..,. ideam1cal.J ttia 4th, 21.ft and 26t.h .,. iden.Ucal• 

and eo on. ftllt as I said bet ... 1llhile p\ting dfttaaed to go out t.o 

a'*"" that ld.gbt1 tidd'Ung with 'lllf black balr tie,, allot a audden it cw 

to me in a tdng1e t.Lash, like ligJitming ti The ~ tha" wu1d aaot.lf 

fit. the poai\iOna ot the Npea\ed and t."'9 d1ttenrnt latteft .. "PNa1deDt 

of '119 Ubited 8'ates.• that w.s 1\ I The next div' I C1118 in and ~ 

the ~ ID a t• dt.\Y8 I handacl t.be Rav a soluUaaJ th• killed 

the Older •. 'Ille lteb!Wn t1N ..it. to pieoaaJ Rebem, t.he 1mrentor ml 

~ ot the n.41 --.wl up ta san Qaent,f.n toi- a -.ie ot TGC&N 

tMloaw- he nn atou1 ot calU'~•e lfbl....,. laa.• 1'0\I -• tbe Debem 

~·• 8'°* heel ~ _. the hol up tha' a laV Olde&'• oOd~ 

..... J ..s 1lhen tibe lla9J' .. clWD•\ oa. ~ .. ~ .. 

IMOJc *°PPad' to about 32,00 a ehan. Babarn piokad • - ot t1se 12.:oo 

. ~ .... .. . 

. . .· . ~.-~ ~!.~-

. ' 

•.. .-...i·. ~· -----~-~--- ------~ __ ,. ___ _ .... --- --:..-.:-----·------... -............... ---- -- - ---- :..!. ... ..t.1·~-· -· . --
.wtt, want to a dUt..- paa4 ot tbe atate1 am aold 1\ to. l10.00. 

the Ca1u.m.a author.t.Uea didJaft • tba'• ao ~ pn lda 1n the 

' 

I ; I . ~bOClfllttllOJW . ~ t>o i£a . 

•\.\.·. .. ~ . !bis~ia a~ ot t.htt,lbd ol;h• ll&dliDIJSavenW am bUU.t. . ~~ ~~o~~ " ~ . ··; : . _. l; _ ill a&'qJ81 · tie ...... n we sold on tbe ma•roSal ..... "' . (\ I ·' 

~ '1n\il the Rrlda cml8 into ~· Here AN \be J'Dton• JOU ... '/.'1fll" of 

~~.~: · .u.- llere, a lll\1bD8l'd -1 tlle lid>~ 'lllnlr. !OU Jft88 tbe ~. tllll 

~ ltep, and ~ lmPa 11obt qt• You peait.S.on t.heae ~ l&G001'd. qi 

· to~ Jratlng inatruct.ions. larl• alJlo 1n 1.VO'i>e a bit laW 

"S'4 ._. Wft o\lier llmmtotis. !feN i8 a aol:'d.m oalled t.he D'Jba, 1lbiab 

._ cansideNd to be a Vflr'T caap11cat.e:l am ditftoult thing - nobody 

~ W'0.4 

s- ~ ...wt aolve it. Jiii • "!:B. a German professor 1lbo pt& out a ta.w&Uee on 

the ~-ot tb8 tldng, llbmd.na hoar maqr ~ and 

combimUcme theJ.'9 ..... ~ 1n the world aould be ~ 11itb a 

Whine 81'1 a d1tterent keTi there w:re ao maDJ' peautationa and oarabinaUm:18 available-. l'ell., geatJ.aaen,. ~ t.lie mabal' or permtat.i .. and 

corabina~ that a gi'Vm cipher .,..t.era aftmrda1. l1lm "t.he birde that 

ldng 1n the ~· ba,. aotb1ng ~ do wi'Ua t.be case. ar at, 1eaa\ ,,.,. 

UUJ.e. It all. ~ upon the nature et tbaeo ,.._..uaaa a 

· ··. ooaab2.nat1-., ~ it, 1lhn tbf!V are baai~ ill tile ~ 

.... Par inat.ance1 take tbe prinaipl.e et ~ ...Uwt!an,. 

the ,..snospla Poe 11184'sa •the ODl4 aas.• th~. With a 26-lftter 

a~pbabM J'9U om_.. 161 Gphar aJphabeta. a. 261 S. a lal'8e ~--· 

)~~-a.;~, tha' 18, fD~ b~ - ...;. .. : • .. ~ 'r.#~ ;;. - .. .....,... -~ ~. • • • • .. • 

........ "'•• • ~ ~--- thO' •Rll tarM h\lDll'ced. am._. ·i!M __ . .. . - .... . ·., .. .· -

' . 

: .. :. .. ·. ,,, ....... . 

J) . u_ 

~~~. 

.. ~ 

.. : ... • to ",':. :i ·= ( 

-- ."· .. ~ .~_.·_:-.~_.-_;.~_~]f.·~~-:.:_t .. .. --"1- :t!:a.:: • __ ...._:_:__:.-........ ..:. .. ---·--· -.:.~ .. .:_ ... ~ .... - ... \:O;c,;;.":.~""' .. ..-.. ...-...& •• _ .......... - ........ _. ; .. -._ .. _____ .. ,,. __ - ..... !-. -·- _..1:..:£~ .• J 
·-q 

~ \' 

wt111one, one b1D'Jn4 ~ thomand au hunr:SNd am tiw b.UJW., 

,S.X ~ tld.r\Y-t.\W thauaand f:l.Te bmdNd and e1gbtr-four plllJone. 

Q\d.te a lep ,..,... So, :1t J'Oll w:re to t.r,y to aolYe a olph4W 8llOb ae . . 

~ in aJtbe Gold BUfJ" .-1 mn to go d lt .,_11' 1ff "7Sns aU ._. 

~ ot i.:wt.aU.Gr¥1 ot the ~' JOU'd wd 1Aa ot tis. 

-end _...... Beoauee it hu bee -.loulated tba1t ~ to -:tte doe 

. ..,_ ~01\I it. W0'4d Wee a f.h~ ldllion men .mdn8 a 

.. tibouam4 rdlli• JUl"8 to do tbe ..Ser par\ ot the .job• not allot 1t. - , . 

and the 80l'G11 WIN1d "8dl t:raa !artti tar bayand tbe p.1anet u.w7 t 

Yet, 81\" ot you can aolw ltThe Gold BQs" ~- ill a ta lld.nutea.1 despit.e 

the .,.,. mJlher' ot penmtat.tona that a 26-lst.tar alpb&bet. attorda. 

a.. 1a a ~ ot a s-acH.m QChina oE about t.he w periodt 

a J&eJrboardJ a li&btr bankJ and a aet of rotaziia. Dl8 rotcn are at a bit 

dill~ '1P8 1A t.bia oaae. 01° oOQJ'981 tlle light.-bank '1pe ot maabim 

,... s1R1t tou bad to ai\ dom and crlPT \\r hand and eo OAJ ao tbe 

i.~ ot this llllOh1ne boak9d 1~ up with an e1ectr1o ~ tt'pewitar• am tbaf, 1l'U the fin~ modal ot a mat:s d;n .. •dd.no. He 

la"tierr modified 1\ eo aa to ba• the printing •afwd.atl ..U-cont&Snad 

ta the ar,ypt.ognph, and tba\ta a p1c\uN ol tAe .mohJ.ne tJ:raa the aats1deJ 

and t.bare 18 a pic\ve ot t.btt intemal worldnga. Diere 1a the Du'board. 

HM an 1he sd\Ghina ~, with pins 1!b1ch 8l'9 put 1n mid M ~ 

ettee\lw poa1tlone1 like • ow ~ ll-209. thOllt pins dnft a 

oerWii 1-wt ~ whlab *1Y• the ...S.totaSns a.ataton, 1lbS.dl we Sa 

bt.ftJ 1QU oan alao -.ltcb the ett_.. ot the .-tatoN _, ... ot.tti.. r • • ' 

-·· 11 .... le \he prlntbg ~-· th1e a1lir1e JOU'll ~ • 

l;JeiDS ,..,, s'.SlN' to *' In 0.;cr...... IMOf. ... ten 1a printed - .... 

... 

. . . ~ ' .. . · .. · ' .. . .,. ... - ... 

1 _____ ...... ~· .. ·: ,;,.,,· ... :~· .• •• ••• 
REF ~~6A02 

'1881'8 ago. of oom'll81 consid8nble thought bepll to be d8voted. to 

tu w1phel.-.t ot t.eletno CClUlllsilcatJ.ona. A81da tNa that Ull-1.9 

.&.f. ta t. empaqy iaabine tlul\ I aband J'Otl a lw ld.m1* aao, tb1e .. 

. . 

. ,• 

tbe - t.b"ft ot t.he ~ cd;bW a\taot.-. d8Nlaped tor ~tr - , '•. h 0 _;, -; ~ It ma an innn\ion ot ODlonel Parke\ if:L\t• t1bo fftWtcl ·i.. 

. ~·: .. ~ !,·~ . kl!lllll abou\ l92S and .joined ihe Int.wt..i.onal TelaplM1ne and ~ . 

'.·~ ·. OrupaJV"• ._. lie de¥oted ht....U tor tm or thl'88 7881'8 t.o ~DI .•' 

' &'-J- ·· ... :··th'.i8 111.ddne. ~··the 1ntema1 ~ I\ bad k117in811b11'e 

· 1rb1ob dtect.t t.b8 tJ.ve .-

; . ~the Watne ~~~-

. _ _ .. ~ 111!ff· :ol.-:11ltt~ ~. '.fb1s one had 10l. points. 'lb1e one ~~~~~:,~ .. ~ ~-~'\= o o • ~ .,. ::• T -

~ ---· tb1e .. 9'11 am 80 on. dGtln, 80 that i' bad an edlrm1e11" long ~J 

"bat tile length ot t.ho period, ap:1n. li1c8 •ti. blb'd8 tbat si.nc ia the 

aprloga• ha8 li'\Ue ~o do u:lth the case. The mchim ma put. int.a test 

uaage in the State Departimant1 wbidl called upon tba war Departmant to 

ll8le a lllCUr.ltu evaluation. I ._. aas1pd to the· job, and had en 

~ time 14th this. 1he State ~ put up a a.'ieo ot 

.... ._.. They wn a""'*1 in at a ~ how, about 10100 o•o1ock 

in ts"Mt llQftllnaJ about 101301 •· salmma, the chief ot the state Depu1iraant 

0Gt1unm1oa~ called• and aaid1 •'lbemcb1m18 Giit ot om.. _.be 

JOU 81t.b:1'.9 I Mid,- "I'll ba up there .ta a blw adms..• I eUpped 

a pMaa ot paper 1n ..- pocket;, and huatlad OWi' to the state Dap&l'um,, 

tben In '21e old State, l'ID', Gld tiBV JJldldSSl8• ~ 8"'1val.1 181.-n waa 

~. •1ta 8tJ1.¥1;• he ..W• •I tr1ed w cateh JDUt bu\ JW bad 

. alNad,y 1eft.. Hta 'WDridng ..Sa, • I wont' trouble ,_... l ..W1 •tr 

the 

. 

W1 . I 

. 

baW- a qwU.e \0 8'* ~l>ou\ \JJoee 11881Sa1U•" He ~ 

&ft ,.tcdouo md aatat, ~t; do ,OU .-to kmWl't And I .W. 
trHate JOU So' '138 p1a1n ta'8 w \b08a ...,.,. btn!" Be *- bS-11 

_.. .f.l'GI m and eaid, ......i, 191•• I eaid1 "When ue ...,_ Ha 181d.1 . . . -· . 

•x. that aafe ~ thare.11 I Glll..d, ll1fel1, I•ll ait ~ rou ao a.8P 

,:\o the ate and cbg out. .-.aae Bo. 1• I _,,~ to Mk a qmet1on about ~ ... . . , 

._- ~ ~ ·~· V., ~ tie Co\ up, opened t.ha aate, pulled oa\ mile.,;. 

.. ::--. ,, and, 111tb b1a back to .. the ...... be1n8 held o.1.~ \o. 1&1a ~ ' -" - ' ~ 

~ ~ .,.,., ..... ia .lt, 10'1 --to ...,.. l pulled out, • p1eoe ot 

' 

·_-, :P.P.-1 md I aa1d1 "Well.1 doea it _,. -?D mi I ...ad bSa tbe eol-8' 

:.'.: ~.... He alllOe't. eat; dawn - tbe floor in ~ '1'bat .. 

, _,, JS rdnutea . or ., an. i\ ~ been l'9Q01...i. !be rn °""*"'" 

1'Aa-ned 1te .t1nstn an \hie ~· ccwa up tbe ~ and _,.. 

W1ed ~ I•w told 10\1 al:lo\A t.he A'm.'f C«apcqr e\Uid1in8 am 1rMnttng 

.01pbel' 18Clhine• and the IT&T OOtlpal\y'J the J.utocJa.Uc :G.ectrlo ~of 

CJ'Jioap• and. the DB~ alao tr1ed their handa at. .it. and fad-lad. 

1he baa1c ft880ft tor those taill11'88 ia that Wit.houtl f1rft.claaa ~ 

~ _guidaraae aobot\Y' «an 1nven\ a ~~ machine that. 18 

going to 8'and ._, ~ organ1ud attack ~ ~ with tile p:ropei-

\ 'l'll' •tma\f it•r• ~ V,$. ~ ~ &':\.. ~\Jl ~-aJl.o..-l.~j l«{S'O 1f'/~1 L.M.. l~+l. 1o t I 0 . 1'bia ii ~ H09, 'llhich - adcptedJ it .. a ~ ~ 

I c ''l- and 18 pft\fi' aooct. I~ .. the onq thing - --.... in l9liO au:l~ 

tor ow _. 1n the tleld~ Haft are kfq1na Wbeala. Here is ~ bafft1. ot 

aavable ~ .. 1lh1csh az:e att~ tr.1 tho kfV1na ._l•J the etMRta1 • 

t.bfl1-- '°,tho left, mt in"' ... tl"Oll 0 .\o as, atteoft a p&'in.t ... 

1111 tllfJfie la the tape,, A W1'1' neat gadget bu\ a bl\ .,,_ eaid not too 

'8owe .,,_ JOU haW t.> or mre •acracee in u. ... 18ttina•. 

~Q:2>··:; -t; ~ ~ ""'~ ~:r'..o _.:,_ ~ . 

~' ~~i-. . . ~ \"\~". --~ . . ~~~ 

--'!%. : -- " - M ~~"A - c - ~~~i;.c M. - - - .: 

_J.1~~---_:-~-~~·-··M···-~------ __ M_J_~'+ ~-:..-=-~.:-:.J.l .. : _______ : ____ ~.:i~-:J:: ••• __ 
REF ID :Bfirr2 ~-.::::~ ------·-L-............. ....-~ ...... --....... --·-o.:'•-~ ...-.----.......-._. _______ ........ 

\ p(2 Horra ~"- ns1i ot thct; t.ime I~ like to dewte to a brief 

die~~·~:;.:~ 'lh1s1 to 1111 knowledge, 1a a . . 

/ 3 .~ -. ~ ~ the 11rst ~c aid, somet.tdng I got up at 

_:-·~w~ 1A1i1' back in 1916, I think it waa1 a pair of glue pla._ 

: J::.~ ~·: ~ ~~.: . . ~ 

\?.,::-~ er poovaa 1n 111b1ch alphabet etripa could be alid up and dam: • ·:"::· .~ .. ~ :-. .. .I 

-,_·::!ii Ol'deJt to align lett.an and .study tbm, tar various purpoaea.. I don't 

·_ ·~ now 1lh7 I put; doan OD it "1ba u. s. War_ COUege.• I had no - ,, 

_ ·~tion& With th•1 but 1 t ms nice to haD1 them. a preaenti, so l d19 : '-:. ! . ~ \ 

:. ·-~at. I made those strips with rq awn bands. 'lh1s was a wbea1 with 

· rubber let.tera that I could arrange in arv- ol'der I pleased to make up. 

Alphabets. 'lbere'a another view ot the thing, am here's a llhole bQnch 

., ot them put together, fw whatever purposes necessary. 

~-1~~)' Now, f1"Cl:l that ear:cy- start have aorie a great many V9r".f interesting 

) 3 y developments. Here is a picture ot a EIEllO dated October 301 1934, which 

I sent to Captain K1ng and Major Akin, now Chie.t Signal Otticer, and in 

Which I made some remarks. You can see evidences o£ tears or cuvbe p 

of blood on this thing. I was asking for a little bit ot money to get 

• _;;:i'Me mt machines. I said, "Please do your v.tmos~ to put t.his across t-or :li -

me. It you do, w can realJ3 beg1n to do worthwhile <="'J'Ptsna:cytj.c wort.• 

\ ~\. 1fell, t.be pl.ea 11118 am-i'ul - ..., got it. H"""'a a picture o~' 

the contract, 10u see, dated the 12th ot Novanber. It t.ook ODJ:r/\a onth. 

_And here 1a 'lbat we ware gett.tng1 and aee these prices. When I think of 

the- 111111one ot dollars whim the ArrV'• Signal lntell.:1gence serv.t.ce_ spent 

- .dUring World ~ar non this sort ot th1ng1 I a11 amased t.hat trma euch . . . -

\ 

1owlr' beginn:lnga should haVe cme tha' great eatahliablll81S ot IJll appantua. \ . . 

\ \; Thia 1s a l'OC111 just one wins of sevaral 1n our beac:lquar'tln 4unDg tte _ 

_ -_.;~ .. ,, ' w4{,--.\-~~ r----:· -.-- r ~ 

~) 

~ l ··.>v ~~~ ~~·-\)~•:··~-··, 

... -~.\v'.>ti~··l. .... 1a4,-y,.-- . 'a-.r'~ ' 

.~---t' i0r.;...a,r. ---~ ·· · · ~ . . . . --- - ---. ----. ----·- ----=------ ·- -·- ------------·- "' -- .......... _____ _......_._ .. ____ -·-· -~-:--i....-:-.:. - - ----
REF ID~·02 

~ ... ·--.:. 

\ •• w:Ltll. tlillalaUng Mdliw,. 1-llt ~- - afte tM otia- Dlf ( 

i--j_~-. e1.u- ~,.. -'1ft'lll r ... ...,.el 3"'-• . ~ b•lt> fou lall,,r t.be pSftn tbe ,..._.~~~*~ 

'

., .\~A.. ~C.,~-CA.-~ ~· .. ~·o.t~~-::~-~~~ 

V;> ·lfefta~. HeWll'8 ~ 1 --~-- ·,1 __ _ , • . ·· .· . h~~ 

. -.. ~ Sa fll• an4 IO oaf he goes IAto a bwldla with h:h•elt ~ ~~~.....,. 

· ;;NMr aoon ~ ocme vp 111.t.b an ~· Wall, tba\•e t• fltm ._ 

_pi~ ~ cllr8-• . ~ md Gft!lllUnicati.~ iat.el11gence S. - ~ . ' . . 

;~ bust~ ..... and I waDt, to M1 4l ward OI' t1lo about th8' .... 

~ the .,,,~ ~ ot 1lllOdeHt 818-- baa -- ftudl:t..~ 

U no-tr ll8da Polldble.1 b¥ tbs use and app11caticn GE apea1a1 ~ 

aids, 1nclud1ng tbe use ot high speed raach1mrT ot the ~ Jift'al'lld 

~ 8cl18 _.. standard .eei.u.a,. bu• ~ • de'9:iJle and ,.. 

aod1ft°"1ana ot .... md'liDllh Hore ~ ... baW ~ 

gone 1ntio the 1mrmt.ioll1 cltmal.epllmrt• m:l production ot eleo\roa1oa 

Cl7P~ gadge'17. At tld8 point; I 11\Bt take a t'8f rnaeal:a to 

claft.t:f the picture and in tdaple language tall fOU what 8ucb ~ 

clo tor -. A8 I said ~re, the l'N!l'ber ot pemtatlona and cmbf.natimw 

;_e£~ )V a G17Ptoapteaa Pf"! am i.an•t too sip1t1oant. It•a ~ ttie.r 

_.. bu'cal~ boa tM atmJdpcd.nt at their.natwe GL71>'°0"9Paiea1Jr 

apeGJdng. ln -.n ~ What JOU are up aaatnn _.. ~­

~ wtdclt vaua'lJ' 1rftolw, te tb8ir llOluU-, taa •ldas ot 

a .,,., m\t.Splio1fr .i tnotb•- eaah ot 1lb1ah .. ,be ...W °"'' Oll9 

atw .. otiia-, m&U JOU t1n4 .. ~ ... 9ae 3ob ot ... .,., ... 

anal'8t 1• t.o da91aa ahoft .. ,.. ten1ns the ~ ... .. . . . -

o~ blae4 ~ the ... ot au~ Nlat.ift to tM}~ CDce 

\"'···· . ·.~ ~----_ .. __ .. __ -.:::.,_ 

;,.· 

.. _. 

. 

__ ~_: ..... :. ..... -- _, __ ..,'""'"' __ _....:: 

. 

-

____ ... ___ 

~ ., __ .,:..... ... ... :i-....1.: ... - - - --- ---· ------.... ~--- . --------
. '· .... ,-,e. I! 

.. 

· _(~ dev1aGd the Pl'OJ*' tmt e te.rt.a fol' eadl l\YPOtbe818# er t# 

,. · .. -..i ooacurNA bJpatbeaaa, b\IUD labm' aan be set to 1IOdc •ldng 

-~ .Sllf4'118 o~ WGte in ...,,. • ftad the conao' ~ _. to ',.-. 

~;·~~- - the .... ...,01'1'7 ot ~ .... 1lhen the *' 1e .r.u.- ~ ~~-f·~~~~ . . ' 

-:·;:-.w .. - ~- it ia ob'dma that JOU'd .... to haW, .. - ... to -~, it "-.I, ' ~· .j' • 

::( ... ,. taotorJ.al.' ! Odnam> \0 do tbO .1ob1 - ..... tbe .job ~ ~ -... 

an it. Sa _. ~ tba' f/rS'f ten Wb1ah oan be madlt bT bml ~ 

b$ aeaballiaad, and''it 1a ~ ... ~ --in ----lt 1a 

mcb ..,,... ar u. out -.. _..., or le ~ ar tffr a\ldl ~ u 

,, 

aheppt.ng1 lava •klng, etc. - 1ll abort, 'he care aid teed1nl •ot machinee . ~ 

la a Nla\1~ maah m ~inple mtte than the •care and teecU.na of 

mam beinga.-1 so, • •• ~ 1lho dev1se tbe tast.eJ WJeD • 

ba• ~ mgJpeera 11ho macbai'&1n the taat.e-. -1 daviee• imNmt• 

develop, ·and prod1loe the lll8dd.ma to perfo• U&e testa at hs.p apaedJ 

tbm w haw Blldntmance engiaaeJ."8 1lho kae~ the llO.Ch1naa in goad 1102."ld.na 

Ol"dlrJ tbell • hi.Ye orn>tanalltic 888ialalt.8 11ho aud.m tbe o'tl1:1pn o~ 

tbG aacb1nes1 aDrl 1fbD AN 1lllWlllf' abl4 to take t.he ~ bnotber#111 Ol" 

'!' ...- caee ml ao on 111t.h \baa to the t1nal. atago 1th8l'e a ..,. 1a 

N00¥11'9dJ 1beD - ., hne othe ll&Oh1ne8 *1cb ~ the ~ ._.. . to spioS.tJ.13 ........ and pZ'Odula the plaSD tat.a baa tbma. Bu\ 1a all 

theM . ..,., 1ft • tlllpbaas .. ,tbe macb1nee ~ p~ •' a b1&b'. rate 

ot &tpttad_, prooee .. ~ t.b• b1 m. bnia and. band C&11 ,.,.. bd oa1,-

~ -~ mdl .,.__ l'8te • ... aadlims dont~ 1btlT CllQI~ l"'t>lPOP _the . . .· 

\: ... ~.~.· ·. 

• " ..---~· --~---.. -- .. __ .: ____ _: _ ..................... .:.___...._.1. _, __ ..,_ ---.. ------~-...... - -· ....... ~ ~ __ J, .... _.;:_ •. _ ... ______ --- - _,. ' _____ ........ __ - ---
REF ID:A6~402 

lclW.t I want to abcwr JOU wha~ t1019 ot \be8e .CS.,. 1ook W.. 

\~f ··ii.. ill.~ ~4ne tw ~ ....... - oau. -·· j 

,~\?" ·. lt - ~ ..... a1thouah lt, does ... , th• ........ ~-

~~! ~ -~-;~.: ....... ~ ... bOtllJlft lt and the ....... aaohlne ie ~ 

1q4·· 

131 

. , 

, ~ ~~·in, x•~ _, tbiat In a~~ proow1ng 

.·. 

~~ w \17' to cll.1p11cate v1tb a t• ~ mat .t.haussnda ~~"J+-~ ot ~ 

-:. ~ ibe ~ ~ an doinl. tor it, \alGa8 Uiomanda ot aold1eraA to 

Gricipher and ~ the ...... ot th• m8ll1' beadqtlaftenJ 1Dvol"ftd isl 

~~ . .:.-~ -:.~~~· . ~•mica~ { AJ.J. theae waaas. or aoGtt ot the are 1ntweepted1 

tbtJ tall t1• into one place, and J'GU can ~ haw a certain mda- of 

people to proceoa U.... u you h8'l9 the ke7 or Jm;ya, then it ~ 

a prob1al ot ~ docipherinsJ ao - devise special t.l8Cbillm 

to dec1pllC' the rwsagee.- AG I said batore, tllB iaechine ?!IV' not haw my 

N88llblance 'llhataoeftlt' to the enmv'• CJ7Pf»gNphio manhine1 bft t't 

d9plicataa 'llhat their ~ ~. and doea ao at a ~ rate ot ~c4 t 1 

~ S~,.,Gb<-t~ ~"°~ cJh ~-~ w..f~ "W:1.iA..r~~·Jil., _ w Here'• a pioture ot such ii dn1ea. ·- In ~Ja nan a11d8 1W aae a tabulator, r I;. 

A ~· 

a a'8ndard tabulator 1'1.Ul a spec1al attachnal't deriaad 17.r ow om ma1neel"a ;J:r. 

nneptih\e of 11bat. •call dcd.na tblute tofte" operatAana, wbWe 1W _.. 

Wi1nC to aolve a thillg on the baaia ot Npet;iUoaa 'lltWrh are t• and 

~\"'"4 OWi' a ~ vo1.Ull8 ot waaaes. tlal11 it Jtau"Ve got mSJUana 

and w111om ot ~. tbe looet1on. ot thoae ~ta.one ia a l'ft\ff' 

~ tb1ng 1t J9U lld8 to do it b,y hand., ao w IPllrl the 88111.'Gb •• 

A 1IMhtne oi this kind td11 l.Nate tboae NPGUUoal in, •• ....._.. . . 

h.-HI• ot tbe "-that lt. --1.d \alee to do lt _. hanl:l• BeN· u. a 

~allied aob1ne, agdr& • ~--. wltb - at.tadla1', haN.t .. ,ia 

' . 
2- ·L. 

- { J ·~ 

• 1.. • 

I , ' I I 

". 

REF ID:A66402 

-6E0R~-

m • aooard1ne to ce.rtain ~'171101J start the aachin&, and lcs 

~_behold, ~t produOea a printed record ot t.h0 meuap repet.itioua 

~-\ml; . . ll.!-o -~~~.J-e~.~ \ t~ _ _ Here 1s a machine Which { persoualq call "nodin•" Rodin was the 

pat French acu1ptor 'llho aculpted a piece of enainoarir.g knoan aa 

•The 1binkar·" This mch1ne al:loat thinks. ~t 1t does is t.hias you 

set •• or give it• oz-· teed i."lto it, a certain mAber ot ~- and 

70U tell it, "No!r1 you a.anine tbcso h1I>OtbW,,Al!l4.>::~~ "';;'"D'\,.'~ ' ·- •• .. , .. ,~· . 

\fb1cb will 8J18Wlr "all the f'olloni.ng condi tiona." The mc:hine talteS tll8 

nat bJpotneaes, latte 91q1c ex:am1ms t:hat• and 1f it comes to a ccntradietian it fl8ll8t 8nell.1 that•o no goodJ I•ll go back and take 14> the next 

one,.u Ahd so on. It. tests the ~. one attar tbe otb•• at a 

nigh rate of apoed.1 at el.eatrunic speed. 1hat•a ~ one small section of 

Wel.11 w t'V8 got left hore a tat minutes in wbicb I should u,y somet.111ng 

about the CUL'nllt tnploymenb or manner of ~t ot comunioat1ona 

I 

~elligence. I've de'loted two hours to tal.k:1ng about, the backBz'o\IDd and 

developmmt and hawn•t aa1d 'ffll7 ISUdl about \he manner ot its aapl.o3ment., 

w~,. w could diecusa that umer variaim beadings, but. 1t 1Ct obvious tJ'Olll ~. . .' . 

~_CH.a~ ot the Coagresaional Pearl ilarbaP camn~ that the manner 

~'it.a. ~t 1n lthcrtenina World War II 1llmt have beon W#'T ettioaciOua. 

R, t)f .-. 1 had t.he time to read 1au. ~ whole ot the llanhal.1-Dalea' 

"~"f ~····.. . t tt 'I/ ·:. 

~ ~·-"·:~~:~u.~~ ~a__~ ... \,~ h1 

_ .. ..er 0 •• 

.i 

\ 

... <"}'\. ~~"' t •• 

•, "· ·· .. ~ 6--· 'r-~t-... - ··J:.. :.1 .. :-., !-" .. . • . . . ) . .._{ .. ..;z.~~:::..::~-~---......____,, __ .._ --·- - -- . -· _.,_ . --._ 

~, .. -- ··- ... 

-- ~--- --·---·._: ___________ -~j1}Si;:_ ______ .:_ 
REF ID:A66402 

SECRET 

OOft"88Poixtance that tbe article in Tiae waa baaed upon, but I think ' - that, just a briet extract wlll be sut.tlcien~ to g:1 w JOU a prefttq 

good idea of the · cont:ribution CCllIN'l made tOWBZ'd our 1dm.1.ng World 

-War II. 'lhese are all 1n that ccrreepondence, wtd.ch was practical.l1' 

broadoaat to all the chanJ;.u. ani ar o!'.ticea of tbe wrld llben it 

1ftl8 disclosed during the Congressional hearings. General llarahall, 

rou'll l'BJBDber, in his letter to Govarnor newer, sent during the hot 

political campaign ot 19la4, 1188 asking the Oovernor not to use certain 

int~on DeWT got b3' surreptitious ctlannels. Hare are some excallent. 

1llustrations or the manner ot empl.ayment ot COONT1 

artow ti'le point to the present dUaaa ia that we have 

gone ahead with this business of deciphering their codea 

until• possess otr.er codes, German as well as Japanese, 

but our main basis of into:rmat.ion regarding HiUer•a intentions 1n Europe is obtained .tran Baron Oshima's :nessagea 

t1'0la Berlin report.ing his interviews with Bitler and other 

o.i'.ticials to the Japanese Oove:ment. Theae are st1ll in 

the codes involved in the Pearl Harbor events. 

"To explain turther the critiw nature of this setup 1lh1cb would be wiped out almost in an instant 1t the 

least suspicion were aroused rogarding it, the Battle of 

the Coral Sea. na baaed on deciphered maasaps and therefore our ts ships wre in tbe ri~t place at. the ri3'it 

t.ime. Further 1 w were able to concentrate on our limited 

torces to meet their advances on Midway when oth81'Uiae we 

almost certain]¥ would have bee.'"1 some 31000 miles out ot 

place. 

"We had tull inf'oniation ot the strength ot t.hair 

forces in that advance and also ot the ma' ler torce direotecl 

apinst the Aleutians Which .n Ml 11' landed troops on A.ttu ·and 11aa. 

. •' ·~·' I • •\ • ' 

.J' ~ • • ' • 

. - - . .. .. ., :;,, .. · .. · ~ ·- -

• ,' ~. ~;. 'r •• • 

• • t 

~~_.~~f ;,·;~~/~'.~;~ :" . -- -·--~ ~ ...... 1::, 1 • 

_........._,_ ---------- --- --· ... ·--------.... ···· Ch~--~~----··--
' •The he&V loallfJll rEported from time to t•· which 

the,)" austa1n by reason ot O\r subraar1ne action larg~ 

result.a trora the tact, that.• knmr t.he sa111ng dates and 

the routes oE their como,ya and can not11)' our aubmarinea 

to lie 1n_wai.t at the propezi point. 

•'!'he 0\1lT8ftt raid8 b3' .Ada1ral Halses'"'a: •C81T'l.er fmiOett 

on Japanese shipping in llan11a Bl\v and elsewhere _,, , · iarpq baaed in timing on the Jmoan movements ot Jspaneae OonYOtYs~ two ot 'llbidl ware caught, aa anticipated, 1n hie 

c:lee1;ruot1ve attacks •. 

* * * * 

•'.[he conduct ot General Eisenhonr•s campaign and of 

all operations in the Pacific are closoq related in concoption and ti ming to the int'ormation n s~ obtain 

through these intercopted codas. They contribute greatq 

to the victol"J and tl'emendousq to the savings or American 

lives, both in the conduct of current operations and in 

looking toward tne aarl.T termination ot the war.• 

* * * * 

What I am going to sq next is Vf!!I!'/ important. The interception 

of foreign communications and subsequent. processing requii-es t.he services 

or numerous cozmmmicntions and other trained personnel. Iri order that 

the product mq be most useful operationally 1 and not :aere:cy historicalq 

interesting, the intercept tn.f'tic haa got to be forirarded as apedi tioual.y 

as possibl.e to the procesaing center, and after processing ~- CCJ.mtl' 

product must be prompt.13' transmitted to the people who evaluate it t.rm 

an 1ntell.1gmce point of view, integrate or collate it 'llith intel11gence 

.t.rm othw sou:roea, pass the reaulta th!H1 to other 1nt.ell1gence per~. 

amt, 1n ·some cases llhere it fll8ke8 a ditterence - a great c11tteririoe, 

.·:·:-' .~ pel'hapa - see that 1'.' 18 transmit-tad. d1reat to operatiOnal ··" 

. . . ~~ .~; . 

·'·: 

• - • ~ J ••• 

' ' I """.... • I I ' ~ ' 1•;. • ' 

' ~ "I ••• 

. . 

°.'I 

.:,: ..... ~ '7"·.) '· : ,: : .. 

¥.J'~ ... :., .• : :;~ .• \ .. · -;:,::Jf/f;..~· r ~1!·!~ ~~ · ..~ •· 't' 

.~ .... '!.~':' . '. .t.;v,;:. ' , 

.~fhi'ii ~:~;~;: ·~;···~--- ·-
REF ID:A66402 

~. radio and electronics angineera1 mathematic:Lans, llnp:1sta1 

, \.! civilian, is theztcttcre quite obvious. It takes a large organisation. 

In 1939 or hO, the total.if¥· ot persomlel in the ArffV and 1laV devoted 

_' to this wonc 1188 about 300. In 19ID w bad 371000 I That sLY88 you 

·, ... some idea aa to mat it takes, aside fteOlll m111ona and m111ona ot 

~ '.~ dol.l.ara tor equipment, both camunicationa equipment and tbia f4YJHl . ,_...,... ' 

· · Ot equipment tha' I gave 7ou a little atoiy about. 

same ot the cryp~c and communications intelligence.proceeaea 

can be accomplished 1n the .field to meet certain 1.'Zadiate needs oE 

field tactical cmnamers, and these have been provided tor by each of 

tne t.hree services in order to meet special needs in this categor,ye 

But cammmications int~;enee processing invo1ves a rather large and 

intr'icate complex ot a good~ activities, mu<ll; ot which can be done 

1l9ll. Oliey' at major, large processing plants llhere the lim1ted number of 

h~ skilled personnel can be ~ncentrated and very special specialized 

cryptanal;ftic machiner,r can be installed and :aai.'ltained. You see, n 

haw ~concentrate the aldlled personnel because thili3 are ~ a 

limited maber of them. You can•t .find people trained in this field 1l'l 

civil 11te6 because there ia no need fm- C1"1Ptana1¥s1s in callJm'Ce oi-

. . ~try', ao t.bat when war comes w don•t have a large pool of' trained 

., __ c1~'.HW!B .trm which to di'• to aupsent, our t~. We•w got. to· take 

baeical1' :l.ntallipnt people vith IP od backpounda1 and good educat10n1· 

and-train tbflll ourselves. 1'he clearance procus alone taka4I mont.be.1 and 

.: 'llhUe dV:lng t.bat time w can g1w ti-. aom hasic tra:1ntng. tJle JIOJ."9. • 1 ... 'f;. - -

~ .. -t - .. _,lex pbuea have t.o be absOl'becl J.aJ:ogeq_ by on-tlle-job trainingf . -.. • r' • ~ I ~ .. 

. . • ~ ' •• 'I . . ., 
RE~.~::A66 4 02 - ---..... ..;:;r.: ~ 

Jbr; I W&Dt to sq a fn worda about the very great importance 

o.r coordinati~ of comraunicaUon 1nte1Hgence activitl.ee wJ.th oth_. 

1ntelligence operaUoas and the tactical situation. Th01'9 70u1ft got . . ' 

to he.Ve ~ oover methods. For exaq>le, when a decision baa been 

,:-,. . ~ to take action baaed ~ comunicationa intelligence, a careM 

ettort 1Nat be made to irJsure that the action cannot be attributed 

. . t.o coaiunioationa int~e alone. Otherwise you Will kill t.he 

··=-':· · goose that lags' the golden egg.. When possible, action lllU8t al-.m.ys be 

~-- ~ by su:J:t;able reconna:issance or other operations which w1ll serve 

as COVC" or deceptive methods. For examplo, if there 1a a convoy out 

1n the middle ot the ocem'l and suddenly it is attacked b.1 air, the 

quest.ion might well rise1 "Well, how tho hell did they know m nre 

···~:f:-,;~~J;~~.;th~-:-~ten ~\~. You see, you make cover tar that, ~-.:"' ~ ~·~.r·~ '"'":"'=":_;-_.~ u~J··~·-:. ... f·::-nt"":~ -..-~-·-;. :;:- .... ~ .. ~-

perhapa by air reconnaissance - ar it saema that wa::1 to the 9D8li"• 

.Another aspec:f. ot coordination be1Jteen operations and connmications 

intelllgance is to be mentioned. The co.1DUJ1i cat.iono in tel 11 gence 

producers must be ~ and full¥ oriented to give .oPt:izat.m CO'Vm'age 

ol tactical operations in progress, or conteq>lated.. lbere are just; so 

mmv tac1lltiee am p~sonnel available taz- communicat.1.cms 1.'lt:.elligenca 

"! ·, wark, and there's a great d8a1 of tra.ttic1 an enormous amount.. Onl1' a 

· '~ !raoti~ ot it can be pi"OCe88ed,; ao you•ve got to neglect. the zien. 

--~~ ;

1.It•a eesential• tbel"etore, th.a1; the cGIDllUllicati~ intel.liSence worfml'IJ 

· ~~-... ·be abreast ot the ~t situation so that t.bG¥'11 know where to put .. 

,_ ·their aaax'an ettort.. Also, .their lmolrlec4.'8 of the t.&Qtical aituatloD. 

·.·:·.:. _ ia essential. to a~ ~etation ot certain resuli'AI _they~- t ~ ... • ... : ' ' .. 

. . ....... 

~- t -· . :;·,,··:;:~~r,~~~~-~~'i'-.: ... · .. : .. -~~-· ..... ~_...._-~------ --~- -~ ......... ,_ ................... :< """'" ~~ ..... h.11 .... ;::~ ..... p"":!._'~ . ......._ .......... _ 

. '"•·~>.~, 

A·~:~;l~~.~~ 
REF ID:A66402 1 

It•a important, al.so, to COft'8late the commd.cations 1ntel.11gence work 

with tantcal operat.i.ona in anotn_. pha8e of operations. ~ in ex.uberacce 

, 0\11' bcnbAl'8 1cnook out 8*V radio stations, the 'V8l'J' 8t1CC888 ot 8'UCh an 

· operation ha8 :reparowssic>na upon cammm1cat1ona 1ntal.ligence. Yw see, ~:--~~ ~. . -

:. ·:· . putting tho88 stations out ot busineaa make&I unavailable to ,. a lot ot 

~ :-.tzoaffi.oJ so that, operations ot this sort JaUS\ be coordinated with the 

«DlIN'.r authorities. There ia anothel' i-eaaon Ear being wrr caref'al to 

.. ,coordinate, am that is that cryptosatJtems are usual.l3 world-Wide or 

area-wide in distribution, and it you don•t, coordina.te tactical operations 

. _With your CQUT;fl authorities, ao as to cover up 70ur source of 1nformat.1.on1 

t.'le enerv will soon suspect that his cr.vptosysts has been aompromieled 

which would haw !as-reaching consequences. You see, a cCJtlDallder· mo is 

a recipient of COJlii.fl and seeks a minor advantage by using it 1n one 

locali v fDB'3' depri:ve comanders in otlier areas ot much greater advantage; 

you want to be sure that you don•t compraaise the source or inf'omation -

t.~t 's the important point in this discussion. While lmaill~"'S and 

experience point to tho necessity of expl.oiting 6'ler:f possible advantage 

that tbs situation affords when jOU get this stutf, and in the heat ~ 

battle the temptation is, of course, vr:r:r great to use the material 11hensvar 

it is available, nevert.heleaa t.his often li1B1' lead to carelessnass 1n it1 

use, 1lhieh mq lead to ~eopardising the source. ot courae, the full valm 

ot ccimmunicaticma 1ntelllgence caJ'JDOt be reV ized un.leaa operational \188 

111 made ot it. aowver, when action is contaaplated based upon 8udl 

intelltgerice, t.be possibility or ccmpromlse or the source auat ~ be 

~ .-,:;- .. 

------·~ ,.,• :.;. ; '- ... · ''": :~·~J .... --' *'* ""i ·-··- -~--- _ __..:; 
REF ID:A66402 

-;---·---·-.,, - .r- -----·----~ 

.. ~ ,':!- \ 

~. .. -· ( ~EQRET 

·,· 

be gained• HS.nor advantages MV'C" alone are autt.Loi•t gromt tar risking 

•.. th.~ ot tb8 -· "~~ . . . Co-.J,:., ..... t- ~ I 

.. : : ... -. •8*1 gmt.l.enan, 1.t.•a ~tOO o'clock. \z•m sanrr that ;. cck;;tt baVe 

:-.i>.; ~ ~ -tim& to BNlftZ' questions, !"'~I ftl.~ 7ou to mrardna t.he axb~te. 

:_\~I can 8D81IW a question wb1le you are doing so, I wW. be glad to do 

.:; .. 

'· ''I 
~-~~~:@~2~~~RET• ,~~ • ~ ~ ~~ ~"'* c - - ~ • \ ' . COMMUNICATIONS INTELLIGENCE -

~?A presentation by Mr. William F. Friedman to the ~aculty ob- and Students of Class 50-B, Air Communication & Electronic 

Sta.ff Officers• course, on 29 September 1950 

Colonel Sheetz, Gentlemen: 

~ 

first I want to assure you of n11 appreciation 

~ 

of the ~pportuni ty to come A to talk to you on ~ subject. In inviting me to 

speak on the subject of Conmunications Intelligence, it was indicated that " the 

' objective of the presentation is to create an awareness of the background, 

\~ . development, and manner of employment of this vital military weapon. Communi-

~ ~ 

cations Intelligence was not always regarded as vital. I am reminded of a 

1\ 

story that I read some·'years· ago in an old book, and the story may be apocryP.hal, but 

.... I give it for what it is worth. / 

It seems 

Se"Wl·,,..a,"""'~~ 

that about 

ct" 

two 

J.. 

thousand 

~ 

~ 

years ago there was 4 Persian ~een whose· ·name -was SimaPl\is a ~She took an -

WI 

~· 

- .. l>l.i. - - \!' ... ' ' J ~1~£.,.'. -- ~t:!- .... .;,p~, I • 

.'\,,R"" wc,.o·' :<.<&.t.cA.4 ,--c;ir ~ """" CJ"\~ 

interest in cryptography. appape&b3:y, o _ &Aa &.i.aa. Presumably she went to . A ~ ~ -

Heaven, or p~rhaps to the other place, but~e~left instructions as to the 

disposition of her remains, ~ they built for her an imposing mausoleum in 

which her sarcophagus rested. on the outside of the mausoleum there was carved 

W··~ ... ~ \ 

a message, aBEi tae message said, "Stay, weary traveler. ¥ thou art footsore, 

hung~ or in need of money, unlock the riddle of the cipher graven below, and 

you will be lead to riches. ~eyond ~ dre~ of avarice." Then underri.eath it 

0...- tfg_~~·~ ~ ~ 4.<Q ;a.~~ there was ~ cryptogram. For several hundred years all the expertsttried 

their .hd,...td"h"~ an s a ecip ering message..> ~t~ht~". wi ou success, until one d~ ay, pres= =~-whiskered, bespectacled ~ndividual QW eieng ~.,after working A ~ 

at it for a considerable length of time, solved the message•~ gave him ~ 

instructiont':; ~~ret entcy into the tomb~~ got inside ana ~k~·-round A ~ ~ 

. ' 
~~6402 • . -.,. :r-J tr H ,.~er:i 

....... ~ · '-~ ~t~ .~'r"' 14. r :._ ,. 

-....( r. !Mi ~ J-o '4 &-Q. 

an instruction to open the sarco2hagus, but he h~d to solve another message/.\ 

p~ ~ ~1··J. .. ~ ;fta. ~ ~ ;h ~ .S--~-R.o-Jl ! 4JJ.l~t A whieh •• liii:s &Ni opene the arcophagus an9. found a box. In the box was a ~ 

message in plain language, and this is what ii; said; "Oh, i;hou vile and in- ~ 

satiable monster, to disturb these poor bones! If thou hadst learned something~~~ 

more useful than the art of deciphering, thou wouldst not be footsore, hungry, ~ ,, 

or in need of moneyl• M&n1 times in the course of the past thirty years I 

have had occasion to wish that I knew the old. gal's address so that I could. 

put as a first indorsement to the basic communication the single word nC,ncur.n 

Well, anyhow, it•s been an interesting life, if not financiall;y lucrat_,i~· 

Now I am going to read you a ~ paragraph from Tim~~ 'liecefuber 17, 

" - " 'i?. t.I: JG I At1945 o "Magic is the Word for :rt" is the title of the article. ll"U.S. citizens discovered last week that perhaps their most potent secret weapon of World 

war II was not radar, not the VT fuse, not the atom bomb, but a harmless little 

machine which cryptographers painstald.ngly constructed in a hidden room in 

Washington. With this machine, built after years of trial and error, of inference and deduction, cryptographers have dup+!cated the decoding devices used 

in Tokyo. Testimoey before the Pearl Harbor Committee had already shown that 

the machine known as lMagicl was in use long before December 7, 1941, had 

given ample warning of the Japs• sneak attack if only U.S. brass hats had. been 

smart enough to realize it.'lf ~ General Marshall ~ continued the story of ' ~ ,, •Magic• s' magic. And then it goes on to say what that story was• ..r I hope 

I'll have time to~ it a little bit later on. 

" I hardly need to stress the necessity for secrecy in this business. Hope 

for future success depends to a very great degree on maintaining secrecy with 

respect to past achievements. Changes as a result of suspected compromise of 
.. REF ID:A664Q1T 

- ~ <.z-~oeRt=:; /.....-4 ._ . • 

cryptographic systems are easy ~o make and very hard to follow. The effects 

of leakage or compromise are not local - they are widespread, because of the 

widespread use and distribution of particular cryptographic systems. During 

world War II, I might say, the continuance of our success hung by a veey slen-

- al~ ~),.~~Q~~"'"~~a..si.J'h..a.. --t-Cf4~~ der thread. I am reminded at th!s point" 01 an instance,.. =t;ftiewaa I.. bef ore(.fii& 

~and to avoid naming names I will simply say that there was a chap ~n a 

certain ·capitol of the world who sent a message to his home gov~rnment in which 

~~! he said that ha w~~t worried about their cOllllWDications. He sai'i\ 

"You know, these many c ges that we are havingldealing with this matter in 

hand, have ~ made it 

"- rte-;;;;~B.:ry ~r~~ to be a--. 

very 

O'\M"' 

volwrdnous ~~ 'itl our correspondence, ~ ..... 44. ~ ... _.,;'tto.,tI am a.- l!ib tic b!ti&-a:f!~aid that perhaps some third party might be IM11 •ID read~ 

~ ~~ ~ ~*° tJ.o ~" ~}'IA.~~!·"' Jmmunicatio~.~ Well, ~e ~ad that, an:i we wer~ very much ups~t for fear 

~ somet~ ~!;:;;Ile--:;:. '1:fe were on tenterhooks and pins and nee~es for 

~two or three d8lB until we got the re~ from headquarters. ~;;fu.;;;~·th.,_. .... ,,\ 

; reply, it said, "Well, you southem extremity of a horse•s &natol117, don•t you \ 

I 1' ~ ' 

1 realize that what you are saying is"out of line? Don•t you know that our sys- / 

o-.L~~ t 

tem ... has so many permutations and combinations it•s inconceivable that anybody / 

,, ~c-£~ ! 

should be able to read these communications without having the key? Now, don't J 

/} . " 

) .... ~ ; ~ 

' you worry any more about it. You tend to your own m:i:eaiea/and we'll tend to i ,,.,~ 1R - l ~ fl 

ours." we were ven happy when we read. that one~IA1~ ~~A.~ ~~ ~ ~~ ~ "4.. ~ ,..,,~ '*° ~ ~·do.. i 

t\.OI hardly need to give you a definition of conmunications intelfi.genceJO"'l. 1 

't.Otl\l..&°17~ ~ c.Jt:1.t'~ ~.'ho~ ~ i thiuk '6ft&4i Major Morrison. 'l/B.s ~already dealt with _it, .&R&- I will simp].J cite 

•vti ' ., 'Wftr"three main objectives. First - to provide authentic information for policy 

~ • ·makers, to apprise them of the realities of the intemational. situatiol!.>or the 

. 1 l 

· ~war making capabilities and vulnerabilities of foreign countries, and of the / L r .· 

\ . . ' . ,, .. "" "'" ) ' '• • . ., ·-·, . . • 'l ~· I 
• REF ID:A66402 

-""""'· ·-.. -· """".' .. --~ ..... =- -rr:....~-· ~-;r~1..:.;tc:+:::..=i1..e::e]· ~ 

>'\. •• •• /.l .~:~~~ /:.) ~_ J_:.~. 

intentions ~f those countries wi~ respect to war. Second - to eliminate the 

element of surprise from an act . of aggression by another country. Third - to 

provide unique information essential to the.successful prosecutionJand vital 

"'P CoMtN\.J 

to a shortening of; the period of hostilities • 1' Now, the background ofAoema11•t ... · 

ea:tiene ifti&al 1 igelltee1 which is based upon the science of cryptanalysis, ~a &..·~ ~ " 

ery interesting history I\ lJll is inextricably bound up with the history of 

c~ptography. The two are but opposite races or the same coin~gress in 

one inevitably leads to progress in the other. Hence, while 11\V talk is to be 

Co Ml NT':" 

devoted largely to cryptanalysis and ;g81l'izHti:e~ioBS iute!Ugenee, I will have 

to deal also~;~~:~;~ ....... ~ -~~~~;t~~~;~rlt~ to a certain exten~ '/\n.L11u '-'.I.~ , \::::::: I"\. Ot-1\ \ • 

.Now, because of the secrecy or cloak of silence which officially surrounds the 

whole field of cryptology and especially cryptanalytics, it is obvious that 

authentic information with reference to the backgroWld and development of the 

science in forei~:~~~e sparse: and although after World War II 

we learned much ~ regardiI!g,_,this I field ~ of work by OlU' 

~ 

~' security rules pre-

. ~~ e-1 ~ ~ W41\Q,. .~ ~~ WIJ. A.C.t"~ b-1.. 

vent Iey" saying"'\-ery much about"~. I can onJt give a fairly good biiQk:gP&lilMi O €/)~\NT' }fo 0.. ~ ~ J..i ~ A _ 

~~.a. ~vi ties,, and even 'then I will not be able to say very much about~ v.s.~~~-~ ,~ " 

activities, because I don•t know very DDlCh about that background and prefer not to give aey information ~ .wat I can't document. In aey case, I might 

say at this point that our relations " with the Navy in the early days were such 

as to preclude my knowing very much about what they were doing, and tse wilnw 

vice versa. In the course of my talk I will give 

o5 illustratio~ C:.t'~~o\l\~\'14\$"' •&DF S ~ 

of which 

form part of my own experience. l!i>dest.y would dictate their omission, but. because of their possible interest I will use them anci will here and now make a 

general apology for the use of the personal pronoun. 

·-. 
"< "; ' . Now may we have the first slide, please. Cryptography and cryptanalysis 

go back to the d.awn of the invention of writing, and here I show an instance 

of cipher in the Bible. In Jeremiah 25:26 occurs the expression "And the king 1 ~ 

.ft_ S\ :41!H ~''~ow'~ She.'iih~k.\... +.ilce.Yi.. 

of Shesha;h shall drink after them." Also in J eremiahl\. Well, for IDBJV', .rnaey 

~~ ~ years tha;t~~ "Shesha;lh•t remain~d a JDiYstery. There was no such place. &.t 

then somebody discovered that if you write the twenty-two letters of the Hebrew ~~ . 

alphabet in two rows, 

~ 

eleven and eleven, you !et up a substitution alphabet 

~~ 'A ~~. ttsh;~\ whereby you can replace the letters bj/\ =•al:enlm,-: For ex.ample, ")ft'" is 

' represented by "beth" or vice versa, so that 11SheshaJn, 11, Franslates ·~gabel 11 ,,b"'«..J . ~ ~~'13~,~~s ~ rrBabylon." The vowels had to be supplied. Incittentally,A Daniel, who was ~e 

first psychoanalyst, was also the first cryptanaqst.t":l' f.l~ psychoanalystJ ~,e.q,. I~~~ 

because ;you remember hew he interpreted llebuchadnezzar.•s ~".ttNebuchadneuar. o 

-~~~~·~.~~~~ ' -~*-~~·· had~ ~am)\jitwben.he woke up~·~~~ e called for liis. Q;.;.~ ~.~ ........ ,~~)~CA • II IA/'(U1(,z. \\ ~ sor~rers and asked them to interpre be drean(~1 They asked him·.what"dream~ A. . ~ . 'I'~ &.o.1. ~ ~ . '! • +wand he said, •'Well, I don't remember it, bu~a1)i& your joo.., to'if!i ~and 4u stff: r ~ ~ 

N , 1 • then"interpret it. 11 'ft!.at was a pretty.A.~assignment, and t~ f'ailts~el)'ltll1f' Vl4aW!ii..ll 

tl>~~~·~ /'"·-.... ----~ h;d-~ Bihl,y habit of cho ping your head off in those d~ if you failed; SOA · :\ · 

~ ~~ c~'to'r#' o-.:.&.~~~~d~ .Q.t..~ .. ~~~.~~ "~8.U Daa:i.ad=,-. M-1 by some..-aas== the record~M}-:C ~;Sqt :bow -.lllfm" l :y~ ~ '''f'~-f&e~r- 'C~f't~~~~w.o ~.-lo· 

able to reconstruct the dream. and then interpret it. 'llftrSome years later,~-..._ :a.. 

" .- o-· ~-

Nebuchadnezzar's son, Belshazzar, was giving a feast, and during the course 

~ff-~ o{fl.. °w\~ ! - '" ' • . j •• -· 

of the feast"& hand appeared on the wall behind the candlestick and wi;-ote. a 1 ~ c.4.~o....., ~>~"""~"°·"° message; ...... Belshazzar was very much upse~t an called for his sooths°lyer~ ~ ~a-L~ " 

so on, but they couldn•t ~....,...,..~-~~ read f'· 'f:fte me~ . 

~~~-""":""~~~ cb eiie.>m~~J ~_eke~.;1}.lP.h~,~W~ 

Well, Daniel was called in and 

' 

apper111tiij' ~~"""' succeeded 

Juao.tl• .. :t"' 

in deciphe'l-ing 

~~~~.~~) th°"" JUHli8~ ' 

' ~~~. ~ I\ :,- -..- / 

~nt~rpretation was tr}lene''- God hath numbered thy kingdom and finished ,, / 

'I. 

f '.l'r~ ~ .... 1 ·t, 

' '"-....\.._i~""'' 

.,• 

• •• ~ .... e.. 
,.. 

~~4L w~ -..,.ill'r""liiCiiii "4 ~ u ·I ~ Lb~ u) 

it. 

rather 

"r:kel'~. Peres, (~~ the iieibe J:e imefizri:be in.h ~·;Jt.u..~~~~~~ - Thy kingdom shall be -dividld and given .f\' \ I\ 

to the Medea and Persians • 11 

The next is an j.llustrati.Qn of the earliest cipher device history records, "'-

~ ~~~4..-·~c.Xa..) wiz:tch-is= the ap.Uia3:ae used by the ancient "'GreekB. l1~.0'\.. T-hey had. a 1 ' am{Ct.lin- ~ 

'-'der 11 ~: =~ wrapped spiraJ.lT a ,piece of. paz:chment;: llBli they Ka-

'" ~;.&..~ at~ ~,~.........,,J-1:1:. . wrote the message across I\ ani: 'e 1 IM 'bile pi!ece ef pm etmleMo tiheD.>and sent it to 

~~t«.e..~~ its destination, w. ere the recipientl'\ herJli~ an identicalJ.y-dimensioned _., 

~~ \' . . '~~~~~~ ;Jilt cylinder, A. -,... the message. This diagr~, incidenta.ll.y, is not correct. The writing was done along the edges of 1i}le _.Barcha-o 9 ~ ~) ~~ "°'° .J.0-.,-...;... ~ ~' ~,~ ~~, ment_,,/\ liBei:aeaeaiBlz&.,, the baton which the European ~ marshall~ar~ as one 

of the insignia/ of his high office derives from this~instrument. 

Caesar, of course,. is well known in history to have used cryptography.;,.... 

a very simple method,~because all he did was to replace each letter 

by the one that was fourth from it in the alphabet. Cicer~a~the inventors 

of what is now called shorthand, He had a slave by the name of ~o who 

wrote for Cicero his records 

'-" 

and so o~ 

~~ 

in A T~ronean notes, as they are called. 

The beginnings of modem cryptography are to be found in Venice.>in the 

Papal st~tes)about J.4,00. I show next an alphabet of ~ W. period of l:d,QQ which 

is interesting merely because it shows that in those early days they already 

had.a .:ec~&_nition 

I~ 

of~the"'~eak~ess of wh~t we,~all single, or .monoalphabetic 

~-substitu'tionf'.. .. · 'al.lt\.&.o~-~~ iSoiu'!io:r\~ et::~onr&iili o-o·~fl.e~~ is' accomplished <: 

l;"~equencies,,., ~~~ I .,don•t '-' 

P.>-c • "~ ~ lfV ~-l4.AICi μ..o,L ~~ ::::;:.. ;:~~ ,Tt/\ i 'd1inh ~ of youJat some~i:n+iJft&r.,e hed: .r couba&t 

,....~that sort of~ But a method of disturbing the normal frequen-

~ ~ o.~~. ciesJ by having the high-frequen~lette represented by• ~i!lti:~:;f7(J'--

'·· ' ·~~ ,? '". •• ·'"-•• "( -6. ,1,....,,, "-

_____ ,1....,_,_,~~~J•' ~~AA ~ 1111..U~ .., I '4'1"! 1:"f.:'" ~'4-.• • -w -~ (J -,- - . -

;.._,,JI 114'0:.::.~ L'-.. : ' ' : I • ....... A' - ~ "'"~.L~ ,; .• ;\o ~.....,..~ 
•' . "' e REF ID:A66402 ~1 

:t-""°'~~ -SECRE1 

Jiit" Gharaet-erf. Mr,) the earliest tract that the '!'Orld. possesses on t~ sub-

~,~~~ ... ~ ~JW6o .. ~ ject of"'cryptanalysisJis that which was writt~by a Neaplolitan~~os~ nane 

~ . ~-- ~·~·]i,.·~-tea. OJvJ.. . was Sico Simonett.a,,. it was ..a.••m in 147 He ieseiF~ methOd or solv-

~~ " ~ ~ ~ ~imple ciphery no doubt~ ·.but Ain a ve·ry clear and concise form. The first 

~ 

. .. 

·.: 

book" extensive treatise on cryptography is that by a German ~bbot named Tritb8μu" ';, wh~C~~ li."~ .V.lJ:."t"'1~~'1i:~ 4:'..;4 * . vo~umes, but he qui:e-'witn toe third one because;.semeh&w H eishe..,-~o.t- charged (:,,"' - • ~ f - ' - ' • 1 

~ 'iith beihg in l~~~ue with the Devil_,, ~$h'ey bμim.ed his books, as a matter of 

fact. 

1E 

We are going to jump a ways now 

"' 

to some examples 

~·.~' from I\ history. •' ~~ 'l:ftere 

~a cipher alphabet and system used by Mary, Queen of Scots, in the period 

1545, or thereabouts. There was an It&J.ian cryptographer whose name was Porta~ 

-~ 

who wrote a book,published in 1563, 'ir.&1 '• U he showed certain types of al.phale..J-- AMJ.. ~ ~ )~ be~ ~-p~O:;r~wn in hi~tory~now as Porta•s Alphabets. '!ftM.''\.an example!\ thlir.ea ae\ f1em Di111 ~~:ftews one alphabet with key letters/ a or' ' ~s.w.. /~ 

~' another alphabet with key letters ¥ or ~>"'- I don't want to go into exa~tly 

how those key le~ters are used, but it is sufficient to say that even to this ~~,w4·~ 

"day tlV'e Porta aiphab\ts are occasionally encountered. Incidentally, Porta was 

"' quite a fellow. Tb.ere are lots of people who refer to his book but have never 

read it. , I took the trouble to have it translated to see just what he did say, 

and he was)~ in JI\V' opinion, the greatest of the old cryptographers. 

Incidentally, also he was the inv.entor of what we know as the camera obscura, 

th p nitor of our modern cameras. I think alao he~ \e earliest of ~ 

ve 

~ a ~ system of k~bstitution';where ~:...... the key is " changing ~°"° eel18~· -l 1 

te.... ~~ w..u..U~~ -,. "- ~- ~" Porta 1 s "'table was actually used in official correspondence. ~ is a 

r • -

picture of a table that was found among the state papers of QUeen Elizabeth•s 

'. 

\ 
·'- ~-v ~-~~~ ~~-=!~-~~q 2 e 

'. ~ r' ~~~) , . , - fi l .D .• u.-. 

time, .. communicating with the dassador to SPain~ ~ ~ ~e.4 ~· C4..~~~~~~c4!£·~··. The next slide I snow ?sA -Lhe, SI ligene're S~e or Vigen°;;re Tab1e: 

/jAu~~ ~i.Jir ~~~ a set of twenty-six alphabets ,,,.'fliJt!.r placedA&tep 8jr ~)with the· plain-text 

letters a~~t;~he key-letters at the sidej ...t-ibe meth~ of ~i~ ~ . "·••.Ila" ~ ~uoao . 

·="'"-~- -,lV- a ....... -~~ .+.._ ... ,~.,.,..- " 

0 to A a key word.>~ the equivalen~c ~i:;;d: &:lpftabet according to the 

\ 

manner in which 

~ 

the key changes. Now, Vigenere also has an interest to me be- .. .J _..!.._ 

cause =ugh he is"credi!ed with ha~nvented that square, "~°" he"nev~r ~ said ~>IAN4U> ~J 

he did-.:rre¥e1 Jii&d6 Jb.bO auah '*'*-/· ~ais'a a picture_ of it as it appears in 

:':'book• a.it Tt goes considerably beyond what the ordinary references say about 

,.... ~ -8-&o"...e.. 

his table,( I won•t go into those differences~ )l'bey•re technical and perhaps 

of no great interest to~today. 

The next cryptographer I wish to mention is a Frenchman, Fransois Vieta, 

an e.mminent mathematician, founder of modern algebra. In 1599 he becane Counseljr of Parliament at Tours and then Privy Cotpise1Jx-. While in that job he 

~ri tae 11!8' 9e a Spanish c~ ~ 500 characters, ~1:£ 

all the Spanish dispatches falling into French hands were easily read. Phillip 

II of Spa.in was so convinced of the safety of his cipher that when he found 

the French were aware of the contents of ~~~ers to the Netherlands, he ~ _,.() 

"~ ~ ~t-Qac.~o...L~~~~· complained to the o1~rt the French were using sorcery ag&inst him •• -ere l.S 

&t~~ ' ~11 ,, 

HD.other exampleA ere are the alphabets; and a sliding card> which could be 

~ 16.ta.. 111~ GO A. MCZo··~ shifted up and down.>was useti as f\ changi~key, zi!" =e*bad of changing the key. 

II Mo'\.. . . II ~~ 

Here is another,called the two-square cipher,,.,·two-alphabet cipherJ ~ coordinates: ll!llills ••• 1

(here is one complete alphabet and /hezt is another one1 ,.... 

the coordinates are use? to represent~&e letters. That was actually used 

in Charles Dtime, 1627,~mmunicating with France and Flanders. . ~ 

.. 'w ........ : ' ?' .. ,._ " • I': .,. 
.,~~~OT• 

~€:~~ .. 

I want to jump now to thl ~ll9i1w1;-Wm :Hied in U.S. histo;· The 

systems used by the Americans and by the Hritish were almost identical~ In 

_ ~ one case, in fact, they used the same code book~ ~~~he.==::,~~- W'<'IC~ Ao~~ -w..&. ~~ AfSP\)¥~ 1:0 ~ltw df.o.,-.vJ~ American w&aee name was toociii\ 221:0 was/\ the cipher expert /\el" Congress~-.. managed 

to decipher nearly all, if not all, of the British code messages intercepted 

ll 11 

by the Americans. The next chart shows a picture of a code or syllabary, as 

~ ~-c.AAQ we call it, used by Thomas Jef~erson. This syllabary ~s constructed on~ twopart princip . . 1 e. T hi s . ~ :£th d od" 1'/l~ v ·11 t is a 66CU%Cm o e ec ing ·u~. •ou WJ. no e 

that the numerical groups are in consecutive order but their meanings are at . 

~ i...~ ht .Q.~ ~~) random. They have no alphabetical order at all. It sl.lllply means that.A.ill the 

~~ " 

encoding section, the words are in alphabetical order, and their equivalents are 

'"~ ~t6 . i.o ~ in random order• 'I! system ww.M even today /\sees extensive use. Jefferson was 

an all-around genius, and I shall have something to say about him and cryptography a little bit later on, I hope. Here's an interesting slide showing a 

I\ \ 

picture of a letter which is known as the Benedict Arnold Indecipherable trea1\ St- : 

sonable ,2ow Letter• ~has never been ~eciphered. It reads, HI have bought 

:. . B .. ~ a cow and calf from Lien. John Joseph iMNieeaR," and so forth. The reason that 

. it hasn•t been deciphered is that there isn•t enough of it to form the basis for 

a solution.~! am going to say a few words about Egypti~ hieroglyphics for the 

reason that I think : that that represents the nextAlandJliark 

~--~ in the history of 

cryptography. About 1821 a Frenchman, Champoli~ startled the world by beginning to publish translations of Egyptian hieroglyphics. Tm.s is a picture of 11 lt \.- o.. iiv:-~~ ~ ... ~ 4'.. ~ c~ ".De.w.t.f'Co< 

the Rosetta Stone;~pti".\~~phics,~ .Egyptian"and then 'SMi: ~.a..t.._ L n ~:_ . ·~16uLE"~~~ ~ --~. 

_.._.t was by means of. this i cription that io&s ~~ rinali3 s~~ed,,~ --rep~e-

~ ~~ ~~io " ,... -~,-·--,:--· ·'~ -e.. - sentedf\a c~c problem~t; ~ th~~~=~~: th~re are t~ ~t we " 

~ 

n.,,.'.. ~-"tv.u.Q.~~~~·~ .......... ':-' 

•• .-' .t~~"- ~_J-<>' ..... s-.t ·, -f" •. -.... ~~i~ -~ """'~ ~ 

t. ~'le.. So~• ~1~ ~. ; '--· , ~,. p..,.t--~ 
,f 

RE~C~;~,~~. I..i-i;>-i:, _: ~;_--~~-.:::;~f!'-4~0""'~..-· -.--

~~~/;ii. ~Cl.·~~ 

call cartouches, that is,~hi;eea fMlPl'&liNi:Mi: by a graven line. Here are .some 

f""2.. . 

~..:- examples • This ,...was on an obelisk, and tb;s ere was suspected of representing the name Cleopatra • .._ I suppose the reason :for 

~ 

~11:s11eeit9.1~ 

........... ~ 

!rii was the 

repitition here of two characters at a proper distance to represent the two 

A 1 s of Cleopatra. By taking the various cartouches, writing them out careful.]J, 

- - COAYO'I ""'llL 

studying them on the basis that this,_._was Cleopatra, it turns out that by take-"~~,&~~ RfM~~ ing the *61"eP9 am substitutingl,.M;e. equivalent"and putting them in the proper 

"""~c~~.A.ll4.I w ~~ ~~ ~.~ «.o 

places, bit by bit Champolia., was able to establi~h1'. a'&he• ll8Ble•.; u lre Ptole.11\Y.) 

" ~ ~(Jo( ~~~ W'"MI w.e.k ~~Jo _. Alexander, and so on. That 1 s the way in which/\ the Ros et ta Stone:,, and Egyptian hieroglyphics were fin~ read. It was very fortunate that the early' 

~ .. ,~ ;.~ ~~ ~ ' \ s:i\litee ·":) Egyptologf. ~aa .,t ~a.ali:11e8: that the Egyptians "used cryptography. 

~-~ u -l.4t( ~~~:_:,~ri{:.f:;: J ~e ~;A hieroglyphic~ but they a.e. also A cryptograPh.~ •• ' · f iie is an example of substitution. That character in place of 

this one "' means " to speak. It You see the finger pointing.to the mo\J,th, and so on. 

~ New I am going to jump to the '-811!111111 period of:~h~ Civil W~ .~r the 

1 ' ,, [ ~ u.s. ~· ··~ War Between the States, Here is a picture of a cipher device used by ConfedO"WJ\,, M~ . " 

erate ArrqJ captured at Vicksburg, one ot.,..• treasures. The ~~ Yisa e~ 

~ is a cyl~er covered with a sheet or paper_ bearing alphabets., ·~the ~ "\ 

Vigen~re table, in other word~s a pointer that you could slide.Jand a thumb 

~~ ~· '"-r 

lmobf\you could turn the~ according to the key l.etters. 

There is one person I -passed over in getting to the Civil War period. Edgar Allan Poe) in 1842 or thereabout~d an interest in cryptograph~ by 

~tory A·~ of "The Gold BUg')" and by a- cottj 3 -

. 

I! arti~s~~ ~~ ~ 

~a et=.~.fHere is a picture of a message, authentic, which was sent . ~ 

by President Lincoln to Gen. Burnside,, ·.i1r Tt •s very simple. It· reads this 

r

---. "'",> -~-io~ -.... "'...... "'1 ..... n:. r~- -,.. : • ,· 'h, • ·11 'i1lY, . I ~ 
~ 

--• l ~ ~ ' I • • '~v;.~~fdacaw.t"~~ w.c.-t ""'4 ,>s&•· 6Coj . ~ ·-~ ... , ~ J·~ . /: 

wq, of course,A but if you read it backwardW "If J: ~uld be in a boat off 

Aquia Creek at dark tomorrow, Wednesday~ evening, could you without inconven-

,, 

ience meet me and pass an hour or two with me?•(signed)A. Lincoln. I think 

the President was kidding a bit.~his is a photograph ·of a page or two from 

the code book and cipher system used by the Fe~ They had what is called 

II II /\ -to~~ route ciphe~. that is, you ld a matrix with indications of route.._ 

~ ~ ~ 1'C.&. ~ ~ 'te-a. ~~· ' I\ 

AH how you write the-message in' the first wortt, second, third, fourth, 

' fifth, sixth and so forth; Alf; tlieil~take~ ~ ~ out according to. another route. 

And here the thing is complicated by the use of arbitrary equivalents for the 

\\ II ti ti 

names of important people. President of the U .s. is represented by Adam or 

\\ ,, Asia. It had two equivalents, you see. Here are some of the '9mm11 names of 

~ 0 "'officers "' ~'°" of that .. ~ period. I have with me todq the complete s~t c.~ of ~ooks used 

by the Federal Arll\Y during that period, and after ~ talk those of you who 

. ~ .. ~ . wish may come up and examine JI', together with certain other exhibits. .Next s4.J,,., 

cn.tA. A +tcna ' 

is a picture of a message sent to General Grant in Mml route cipher.S, I shall 

.r: 1P "' not take time to read ~. If There is an example of a type of secret writing 

employed by the French in the Franco-Prussian War. It consisted of code 

groups written out from a code book. You remember that in the Siege of Paris~ 

f~ ~~ tod.h-k.At.J'l'4~~.~~~ ~were completezy cut off11 HH'L tae message~as ...._ photographecl' down, and 

--~, ~~s11iK1 • 

~was the first and earliest example tM.t I 1 n el of micro writing used for 

~~~ ~,..,. ~ sMJ.., 

military purposes-"photograpned down and. sent out by means of carrier pigeon• 

aftlt-.-his is a copy of one of the examples. 

After the Civil War)or War Between the StatesJthe use of cryptography in 

~ United States military affairs went into a decline for a long period of 

-~~ peace, and was broken o~ briefzy by the Spanish-American War. ,.,,_ Xhe War Department published a code called "Code/ to Insure Secrecy of Telegrams J' in 1 aas.. ,,. 
basevn a s~1 c~mmercial:- cod~, ~a~s~t word for~~~· J''J __ a ~ dau•t . ~- _ ~ .,1). ~ ~ ~UP....,.. oL """' ~ ~ ~J) ~ ~ ~ l.IJ.Cllla. I.Ii... 1~ 

have a cb'py of that with me. '.1:n t e S sh-American War there was vecy lit- L_._ I 

~ ,,,. .• A. o:\~ ~ :. ':11-.t ~ . a" . ._~:~cryptography) ~ec¥ that code;wlμ.ch had no secrecy whatever; but then . 

w..a )'J'--·..J..e...... Lou. ;f.irQA. ~I~• there was no such thing as radio. In'i.899 the Chief Signal Officer undertook "' /.,. . 

the preparation of a suitable code. F.conOJl\Y was stressed - the Chief ~ignaJ. "'° ,, Officer personally did all the work. In 1902 the tidpher of the War 1>epartment 

was published by the Adjutant General. In 1906 a revision of that was published, 

. . ie.a. 

and in 1915 a completely new code, war Department Telegraph Code.- was published. ~ 

~·""'Col ~te.ok C~~ A l".j::> aJMi. printed by a commercial house in Cleveland.-~ We come now to the World war ,... 

I.periodewith Hertz's discovecy of th~ so-called Hertzian waves ani Marconi•s ~: . 

- practical demonstration of signalling by wireless,. a new era in militacy com':" 

munications was ushered in, and also a new era in ccyptology. '.1.he first wide 

usage of wireless, or radio, ·as it soon came to be called, was in world War 

I, but developments in cryptography lagged a bit, as we shall see. 

~ IU~. Wu :C. 

First, I will discuss the tactical use of cipher systems, because these . " . 

were used in preference to code systems, :Which CBDEI ~ter. Here is a ,Pi~tu,re 

~ N. ~ .,,_.t., ~Jo- .A ' f:'Y~ of a cipher &ystem used by the Russians. Xothing but the Vigenere &;tS tem all. 

over again, • using numbers instead of " letters., ~~~~ k. Here ie a case involving a 

~~5~G.~~·~~· set of 7 or 8 alphabets used,._for substitution. 'J.bis· was the deciphering n._ ~k -~ ~~tao..f".iuu~~ wo.o 

table. The mxt. .eae is a ~ctti.re ,of a front;... cipher system._ a transposition 

" ti\.~~~ ~~Al\. ~; system, the~ columns being here~ in additio\:,certain disturbing e'l1ements 

Co.-ca.. ~~~ ~ . . ~ 

~Y taking off the letters in ~iiagonals. And ~ is a picture of the system used 

by the Italian ar.iey in World War I. Again, it is only a variation of the~ 

Vigenere ' system. ~liere is a system used by the Uermans, invented by them, 

or)~ I should say, it was a combination of two methods put together in a 
very clever way. 

sisted exclusively of those letters. An alphabet in he~anged according 

~ ~ l~li:Mj with the coordinates r~~;~ a1eiphe~:;. .. message 

~j!..o..~":'. 't,rdinates~l::' blie Mtto""l"" p~ ooo ~;t!ietter ~ A~ ~~£ ~ ~ is .represented by ~ ~nd so forth• est 1hen r· tfl!ii'he 8: key) developed from .. 

= >A ~ -\6.. "-"A.~~ key word,~ver ~,..x•s>&M--A s and so .forth,and ~~he letters" out in columns . 

according to the key order. -~~;~a brand new thi~~a.17-;JIC: 't* r 

411.a.~ ~·"·~ . and caused no end of hladaches /\until it,-was ctl:SCOvered just how the s elution 

could be achieved. ];n tlad uv'-The solution was not a general solution but u 

ao-4U .8J--~ (oHJ ..... •6. (j.o ~ ~ ~ c.,.,J.,! ~ ow. rv.... 

depended ~· upon special ~ iMhncav, aM: I rieft'* 'a sire 'il!e '&!:me +se go iube +shat.. ~ 

,..,,. 

That cipHer was used by the German high command and consequently someone soon \J 

. " "J., AJ)f"4-VX 

discovered that.Jou made a chart based upon the number of A!SEH!f messages A 

intercepted, why you co~d..l d~sctver certain things about the tlilctical situation 

~ ~~j ~ ~..J-{. j.t."w.t.. ~ i ~~ ~J- andj espeexai~ aeeMt what might happen. This is a chart which we got up in the 

f\ A)~X AEF based upon the ABB~ ~eRt. This, gentlemen, is the first illustration that I know~~ ~tocy.' o~c~analys~raf'fic intelligence. '.I.he 

" II I ', .. It • .-...... J 

C~---~ 9' If next slide gives a picture of the sort of"' : u ·..- ,_. n±_s a bulletinS 

Ab f'•\Jx -M to awz. Sl.. 

'that we put out when the A-Eeemt messages were read, e9!i Q.ere ape.a set of mestl.~ "' sages.)~ November 20, 1~18~ of course the ~ar was) over, b?t Jthis giices very 

1'1~- .... ha ~~'l<lt.4.1 

important information about the wi~hdrawal of,.MeK1..,..'a arm;y. There is the 

~" ~ ,. ~r~ ~c-a.~ German text and there is the translation, arl authentic message. :!he British 0 -

~ ~~W~l: ~ I\ 

and Americans~used a ei~he~kno'Wn as the Playfair cipher, invented allegedly 

by Lord ~on Playfcqr, but he didn 1t invent it - Sir Charles Weatstone ~ve~ted 

~~~ J)~ ~~".MN ~ ~ ~"-~A. it. The methoo-'dPl\enc~nt is to ha~ a"key word, then the rest of the.Al.let- _ J 

( i~~ 6AA- '-Jt°';'O ifa.. CSo.-1. ~, :_. "~ of the alphabet• ~f you ·want .. to encipher nat" the equivalent --. ' ~ ~ 

ri... ~ lA)~ I ..uG.o ;_. e>..<~ ~ ~ 'J4. ~ ~ ~ ~ 

~~ ~ ~'"°""'~-~~~~J;fot~ -a. J.-r "-"-'-J... 

~ ~. t:;t:;; l-
~. REF' ID:A.664.02 

.· ECRET e ' 

"4 "vr') by diagonals, and so on. There is an example o~ a message A. enciphered. 

In those days, 1914, that was regarded as pretty hot stuff. In fact, an officer 

of the American A~,(1ate~ec8JIE Chi.et "ignal Officer, llaj. Gen.~) 

wrote a little treatiseJpublished in 1914)in which he dealt with this Playfair 

cipher system~ llllllf-"-Jhe title of his work is "An Advanced Problem in Crypto-

,... R1.:a.~~aphy. n Today) 9ur most elementary students are given things of that sort to 

~olvCX f The British Aney proposed a cipher device in World War I# ..-.-,hey had 

manufactured a great ma.ey of them and distributed thousands~ rf/fll/Jf they proposed 

to the French and the Americans that they use the same thing for tactical communications, but it was never put to use for reasons that I hope to tell you 

later. 

Now, I'd like to say a few words about cod~ and code systems use<): I 

think you all know that a code system is simply a sort of dictionary in which 

the words, phrases and sentences are representable by arbitrary groups of leto;~re is a page from a commercial telegraph or commercial cable company's 

codebooks'Mmt " ~ they offer to their customers. You•ll notice that each of these 

code groups differs from every other code group by at least two J.etters. We 

ll II ~ P..~.u.JO"cl Q. ~~a.- Call that the two-letter differential. The 'feasoo-il that . a 8PP8P iB aaa. ~AM.~ '-...J.o. ~ ~ .. ~ R,j'- " 

iR ttta&smse;ma. the liklihood of making two e~rore in the same group is not 

" ly t : 'ngl~ ,,..~li~t~h*'od.· near as grea as ng a s1 e error• " me 

0 

s ~~ ol't_correc ng -~- ---- ~a,, fsa~~~ 2.- ~eo..-.J.o ..ti...~hJ.. ,, ,...D'?U BJJ a. llr~up if i!- has a single error in it. Now, code boo~ and codes 

~~ to .At..~1\1 ih,.,~.o_ N ri~~ .>t\ 

are ads <iititJa i6e ~ kmds o business. They are ~generalized, 

~ 

t;·"..YJ.-~ ~ aAshipping code, or a code for the automotive industry, and so on~ ~'lhe ~~~Q. ·-·--... •• 

nextAeBe ie +.l!e highly specialized code. You know, there are certain people J 

who believe firmly and implicitly in the power of healing by suggestion anV ~~~--~A~ 

~~A~9N_.W.. 

~~~ 
and what not, and here is a icture of a code book put out by a gentleman who 

was a P5°i'essional man in th t field. You'll notice that the.,.P,.UI'pose of' it was, lo .&e ~ -m.fa~ ~ ~ ~ '<l"°'t. ~. ~J ; .J 

of course," \\mlt if' you~ on a trip and .j1ll. wan~ to cons~t your practitioner) you~ send him a messa~e and tell him what you~t. you~ suffering from. Of' course, you ~yo~ - suffering from this, that or the 1tvz. ,ok,j# :.....·._ 

other thing. li8 -. English and French, and you would simply represent your 

4.# 

illness, or alleged illness, by"code group. Now, note that the gentleman who 

got up this code was pretty well versed in the intricacies of code and co.mmunications difficulties, because these code groups differeilll by at least three letters each; .AIMt the reason, of course, is that it would be a pretty serious 

4A:~Ji i:t:_ yo~ent a 111essage say~ that 

~~-~ ybb,/\.,... suffering from coma but ~~ ~(,) ' 

.;,l4.)(j~~~~-~~~~~/._" 1'. ; 'ail for convuI'sions. That would be pret'ty tough. 

Prior to World War I the use of code books for j;actical. purpo§es was thought. 

~~~li~~~~A=:§~;~~·. "~ ae&:a h~l!emi•• I don•t think they thought too much about 

the possibilities of solving code,.._. ~ly in 1916 the Germans began to use 

/ielJJ .¢ode$, an! the Allies soon follared suit. l~llali:'~ to show 7ou picLJH-

• ,# ~~.:t;Ka-~~~3 a.R..o~~.----cr--

&-1 ~~,.:t ~~f !,.~~~~~,but IA- ex-

\J ~ibits~~ose who would like to see wha they were like are welcome to come 

I'\_,,._ r• ~iJ.A_ IJ~ 

up after this talk and examine them. ~ on:qA.eBe- ~~"J:1r'isiiiiP••:Li11••&1el!tlltll!Elii...ibir:a.i·1~iieEl-il!'8iell'9 

show is 

~~. 

one that will give you. a picture of.1. American .. i:didequacy in World War ,, ,, 

I for code"'wcwlr. '!his is authentic - I didn't make it up - I found it in the 

records. It 1 s a code gotten out by the 52nd lnfantry ~gade~dated 17 April 

11 ti u \I 

1918, and it is what we called the baseball code. If you wanted to say ki~L ~ 

. '~ ,,~~·-·,~·~~~ \l 

·~ S\Pilfe &Ii• 1 ease 8R sad:l., '

1

hit by pitcbi(ball1

; aM SO forth - Very elementary. 
. 

.. 

«; 

- ,......,.. . it Bt RE~ l...J 

.ED 

k'~ ~~~t~,~~02 LI.' ., .. :; , ~ ~ .. ...el. 

~· ) ~~ • 

• • \ "'"'' ..... '\, ... __ -(( ~'l.. ~ ...0 r Now I am coming to a ver,y interesting example off\Worl.d War I period. a cipher • 

~ rM-- ~ ~lk ~ J&..M'~lf·~~ ~ message which was A~xom a German spy in the nited States~ lll!mt he was.• 1 ~. 

lfMilidid ta dean 'U:le reaaAAe wy tcnnd on his p~sgp, and t'bat 1& a }lie~m: e ~ 

{)--1.v ,Jd1r=1t:Olis @r lf?w e1tA£ter some weeks it was deciphered bj ~ code-solvi_ng 

organizationJ in Washington, MI-8, as it was called. Here is t~ext, '"TO 

and this is what it said:. ttThe Imperial Consular officials of' the Republic of' 

Mexico.~trictly !ecretl~he " bearer of this is.a subject of the Em.pire"&ll6 ~ travels 

= ;. :. 'Pablo Wahe.'°'~'" as a Russian under tba name of ~ ,.B&ff P6e. He is a German agent. 11 And so 

~~~~Jo:~ .. ~~.W~·. - 1*°4-~- forth • .._11to ·--• was, coimited't~ life 1-";isonment1 and ~ I - Q 'JI.. 

_t.. ~ear~ ~ere is a message which is probably the most famous message in crypt- ~·-- { . A 

analytic history to date. 'lb.is is the message which ~rought the United. States 

into World War r;on the side of Britain. In 1915-16 it was very much catchas-catch-can as to which side the Americans were going to join. Our British 

~ 

friends)aAi-

~~~ 

late~ allies, did certain things that we didn't like, and there was 

a good dea~foT talk about ~.'But this message, solved by the British, brought 

()"IA..~ ~ /\. t\ 

us in. It was the straw that broke the car.ml •s back. It is lmown as the Zim.-

/\ II 

merman)\telegram. It went to the German legation in Jlaexico City from Count Von 

Bernsti~ _tq.e ~erman ~ssador in Washington. The method of solution I won•t 

~ ~AJJW ~Q.~·~~ ~ 

,.. <\: J~o$.:.i":l ~of the. -;:-t"!l ~ =t~c~.l.~) ow;. friends ~Jr- - .._ in bringing,. i;he "9teP.i::ewAie: 91 meaRS ef 'Wla+. m:eee&!&• Here is the trans-

-

lation 

" 

of the thing. It was important because ~o~~~~ the~ Wetie going to resume 1im:.. - t>o.J:~, . unrestricted submarine warfare and this; dealing with a deal with Mexico, was 

the straw that broke the cam.el •s back. People in the Midcile West were very 

{Jw>.. ~·c.ul-o~ ~-""-~~-~~&~ 

lukeyarm toward'\he id~a 0£,._--..-iMi• •••• thqs began talking about\!!'•-'ng ba;:::k 

(t~ ~ Texas,N;,-~~~~ Arizona, that. was somethillg else ag~ 

fJEeR:ET 
.~~!'t€t~ "--~ . ~;~~640~~b~~ 

~ .. e.+'b~+~<l>b~ ~ . WOJt"7:k:d 

we got into 

i4 

the 

~~ 

war.. WHere is ill Slii~~? ~ A~ ,_~~her ~ ~ 'sf 

~ 

Mf .11a1 •/\•9' solved..w..... ~ 

tt. A tA: Iii• 9y .ae ~ea et.ates ~Pe.-:Ji! in Washington: a sabotage message talking 

~ D~ ~ '°""''°°'~ . about who A Wlft! reliable" and what they_ should do. _..1hat ~figured in a long, long 

1,- ~°'"""-~M~ . ~ trial before the" /Altc ~laims eommission)in which the liermans were charged 

~1. '~-~th certain acts of sabotage, notably the KingJ,.,,&:f fire and ,tli~ Black '.L'om_. .fl 

~w.. Y\W.W~.~ ~~ ~ 'fo-o~ hjfJ.A • .,,_.kJ~""'.""11~.~ ~ ~"{ explosion"' """1~ resulted in a de"l!isio'"fl in favor of the United Statey claim- i ~~~ l~ ~ ants,"some $40,000,000. ~~is a message)in secret ink;that figured in the 

\.. 

~ 

B,"41.ck Tom ~ase.a a ~e ,/ro~ the.~ BJ..ueb_ook MagazineJ'4n which there was ~.;:j\ij~""'t6"-·~~...,o--

~~~)tt.. ~~~~ ~~d)A.~ /\~ 1fri-\iag U ·i-y Ch *'n P118Uo ::J!z i!TLad8P-;~ - J 

l the Germans financed a large number of Hindus in their at tempts to stir up a . 

rebellion in India, the idea being to cause so much trouble in India that~~ ~~~to~~ to~e:LC.ot'~~ ~" . ~ wolb.\ dPe:w Nt. MM:&l! troops from the VWest~rn fro~ 1mt 1hese Hindus were 

d !~ negotiating for the purchase of arms and ammunition in the United States and 

{ ,{ sendjng~r to India~ Here is. one page of a long, seven-or eight-page~ 

1:_ r;.;;;ti.:;-.;;as ~t.;;.oepted between -:tel\Jlindu~ilf united s:,tes and his chief 

1,--/. in Switzerland. The~ consisted of roups of figur~~j. which were inter-_, 

!~ ~~-~t' " I t'41'Ae..~·~~~-i.66', 

~\ s~ords. I rec~~d .. · .' _ ~ " . , .· A represented the pa.ge"-;,.rj j} \ • hook, th1 ... ~ line nuni>ez:, ~ ~~~ i.D+:ttl~1! ~ /fll I needed 

, ~ i was the book, but~~ ••nas• i:\~:LL1;cln b ... •i what the book was, 

•t/)cie !. t1 &~.~ 9:l"' / :)(J£, so I had to go ahead am try to solvel\.a:t:. ·~ was solv~d, and I•ll show you· 

$1_ ii ve-,:y briefly the method. As I said, there were words, plain-text words, inter-

. i~~~~..,. 1 i 'si>erse~, - and I wouid make a ?ues • Here, for ~le:"For~-,, something, 

., /( ~)) ~ 

·· ~ .with/ something." I assumed t ~his"would be ~e word "committee," and. that 

\____...• 

meant that on page~~e fourth line, the second ietter in the line was a Cj 

~~ ~~ ~! -..... ,JIY . . .t>f 'f&~. 

tJk~ ~;y· ~Pf!'-R· r.::~ PP~ u ......,......, · "--< f. 
~ ~~~w¥!~~1z,~~.~- ~ ;_ l(..¥ • _, 'REI~~~· :t,- .• -"-~ - ......._ ~-

·:: -oil 

-~_the third)happell88 

~_)~~-~ to be 0 4ft'd the fourth.)• M.>a.M- the fifth""• ~ M, 

but th~was not indicated• aflfl ae 9a.. Well, by substituting some of ~ese s smn~ \v..c.~,Ln~ ~u ... ....J.... ~fir. gμ~sses in their proper positions andl\tabuhtions of this sort, I~ that.\~ 

'/) ~-.... "" ' -· I\ I\ It "\i~~~~~~-~~ ~"'t)this word committee came from the word communication on page 6SA '!hea \his. --'t-. "' .'~\ 

woll4 ie "*91\a~'e!i:ea;" mMi ae .r:sa Ana jy working back and forth, building up 

~~ow~ .~· l£~.'pt'tf.e.. 

the/\pa~~o~~b:~~~~s~~elped the other - -\ 

I fina?iY".·e&me 't;e 'hlle eonelll8ien.that l~ was a book dealing with the history ~ ~ 

. W~· ~~~ r_ 11\ 

of German political philosophy, or~, afli:l:iiunted and hunted and hunted." l 

' "' " 7\ {. 

I final~ found ~~eok!, all right. It was Price Collier rs Germany and the i "t',:-

£tr.,.. -~ o-c.J' ' ~ _-r 

Gerl1181lS • This message figured :IA/\ trial. - in San l'r11I1Cisco) where there were ~ i· 

about a hundred and .t'i ve Hindus on trial simultaneouszy. One of the Hindus ~ ,g~ 

turned State Is evidence and got hims elf in bad with the others • They were r 

searched every day before they came into the court, but one day, the day after 1 

I testified, one Hindu managed to secrete a gun in his clothes .. and during the 1t: .. ~ 

midst of the proceedings shot the Hindu who had turned.State's evidence, where-1t 

upon the United States J'rshell, a:'~at big fellow.) six feet fourJstanding in · ~ the back o! the court; drew his weapon and shot the first Hindu dead. '1hey J ' 

were both dead right there J within two or three seconds • That's the way that Cf 

trial ended upJ dramatic~: _ ~ /\• l,.; fl\ ~~~ $~'4.. ~ ·rr 

I'm going to pass"-~,. n.p: ~ figured~~ oil scandal in the ~l l 

~~ 

days of 1924. I was government witness in that cas~ solted the messages .aei. t P H..D.~ ~. ,f1-•~ some of the facts that lead to Mr. Fall• s going to prison• -Mie Secretary "( 

of th> Inter~r; {i~:,.f.i1·~~ ~ ~, 1~ The rum runners in~days._used some very good codes and ciphers~ Here i 

1~ 

=!1 is a particular case where a message was enciphered by taking code groups out 

of one book, transferring the code numbez.s for th(degrou.P,Sinto another book and 

., t f>l 

f 3.~ 
1~~~~~~~ , REF 1~~~402 ~ v ]Cb 

~T"JCRJ~ i . . / 

then adding a 

~s~~~~N~~&~~" Ponstant value to those n~ers,, _.1his.was~ message. All 

I had to do was to find 

1wo the"books c.~ ~ .......,...,, "'. ,L,., '\A I\~ 1(,..tt.J..e. 

.;.. i:;::~ ·~ 0... ~ <J q~ 

There were some interesting things, working on the job"we would get mes- f 

,, 

l sages from various government agencies to solve. Here is one that came to the 

"-6 IA() ~~ White House an~sent toASecret service. It was addressed to the President and 

had thi~ in llli after this ~~~aa &lib a.t t11aeo ¥:'&• !f you read. it backwards ~ 

and alternate letters ~~f!~~ it~ 11Did you ever bite a lemon?" ~ ~ . 

Now I am going to jump to the question of cipher device~ because they 

.represent the modern trend. I•ve already mentioned to you~f~ the 

~~~ wWla. +e.W ~ ~~ invention and~tii:11'i~ of radio) and ~effecto~ciali;'upon crj.ptology. 

Traffic in large quantities becBJE available for interception and study, and 

hence improvement in cryptography had to come. It came slowly but surely. In 

connection with theqr~~advancesAcari.te . ~~~ inventions of cryptographic devices 

anct machines. ·~brief 

A history of these will therefore be useful. ~-•oat is a 

picture of the earliest cryptographic device on record, except for the ~~: 

This is ~ken from a book by an Italian named Alberti) published in 1470 .>and is 

jus~oi~one revolving...:;:centrioally upon the other,so that you 

could change the relationship of the alphabeto. This wheel is represented also 

" ~~w~ in the Porta book, and, by the way, I have a copy of lhe original edition of 

I\ 

Porta\ with the cipher wheei.\ in place and in working order. This was published 

in 1563. They didn 1 t have any children in those deys, obviously, or otherwise 

these thi~s wouldn•t be here,~ ~ ~ l~ ~ ~ 

I know it takes a long time to get a patent through the patent office, but 

Alberti' s device was finally patented in 1865, the inventor happening to. the . .+- if~ ~ J. /3rJ2> wt J.. ~ ~ the Chief Signal Officer of the A?'ley) Mi tih&'i 'i!-;' Major Myer. I'i was the same ~ A ~ 
1~F ID:A66.402 . . . • 

There is a 

more recent invention of the same thing. The pa.tent office doesn't have good 

access to literature on t~ ~o eve:cy once in a while ·a thi 

as old as the hills gets through the " pa.tent office. Now we come to a:ri device 

A.~~ 4-,.,. " 

I mentioned that the British proposed a cipher device for use on the VVestem 

Front in Wo:ld War I, and a little bit of his~ interesting. Here . ~ 

is a picture of' a device invented by Sir Charles Wheatstone, the emminent JA_ 

llt. ~ J.....o 0.. ~ ~~~' ,_.~~~ British mathematician, p~si_c;ist and elec'tricaf en8ineer. A ihe principle,(is ..;o \ °" ~ t· R~ 01. le... S l~~ ~· f' 

little different fro~')t+ie pPes&ai:Bg gy.,, This .W an alphabet of 27 characters 

I\.. A 'Co-Q. ..a_,4 ~ ~ 

and an inner alphabet of 26, 'With an eccentric motion wpewing the lit- ~' 

ters that you were actually going to encipher. With this harll, you 

"' 

see, you ~ 

go around this way, and l>he fel:tl'4'!! 1euembi'*"., for .example, if the letter H 

is represented by E)on the next revolution H wcuEl:d'-te represented by the next 

letterf, which happens to be a '!.~or. Now the British took that basic invention, a~~'t.~tt.~~~tbe.~l~~~i ~ 01.51~:1~ E"~ ~~~~~~~~~~~. " 

"in normai~der_,,.. What they did ""'Wih--fu -add the idea of a mixed alphabet on the 

oufs'l:i't.~·T~d the form of the device itself, but the cryptographic 

A. l~~- i,A.. ~ • 

principle is identical. A_They had a great many of these manufactured·. I was 

at that 

."""" 

time) 

~ ~ working 1> 

at 

&i&"'I, the Riverbank Laboratories,.._.. ~ 'his thing had been 

approved by t~e British, the French and t~t::~Europe. It was sent 

to Washington, appro'ved there by the MI-8 people,~ somebody there said, "Well, 

let•s see ~this fe{low out in Uhicago thinks ~ut it.So they sent~ a 

~~ ~~ ~a..~" set of five ... test message~ tsf -!his device. All I lmew was ~ waa based upon 

~~~-lL n ~ A A 

Wheatstone· priD.\:iple~ ellli.. IJ7 employer came to me eBe ~ ~ gave me these five 

" cs</io messages, each message 35/\letters long only He said, 11.1. want you to solve this 

3ECRET 

-~ ..... 

s. 

?.~ 

e ,-s;, 

r--:. 
• ~F.d:~ • -·5: ~ -~ {:; ~1....1 i\ ' •.\\ ,, ' 

,,_, }·--;·• -' -. ~ ~~+~.~~ 

thing." I said, "But I can• t solve aeything as short as this .A I have other \ 

f'ish to f'cy. n He said, ''Young man, on the last day of each month you get a J 

little green piece of paper with Jl\Y name in the lower right hand comer. If' --y . ~It{~ . tll\~ ~ you WOuJ.d like to C cntinue recei V~ tbos e /\~OU will Start work lt..eJ&d.Gi S right 

SW"iY. • I said, •Yes, eirl • Well, by hocus pocus which I won• t go into, I 1 

,. 

~ 

l 

succeeded in reconstructi~ what I thought was the basis for the mixing of these 

~ ~ 6/.. -f8.t,. ·~ oe~• &.tr; ~"·"At- .k. 

letters in Here,A.. The word on which it was based~wee the word ncipher.".and I "° fio.! M ~, A.;t~ ftt fNJlfA' ~o.kt 1l,., --~ ~' thought., nwell, there is no way of' reconstructing ~· n At ""ihat tlme I ~dn 1t 

"6" ~ SoJ ~~~ ~~ ~'8-J,:.J..twa. o.,J.. u...}911 invented the princfple. i-~ ,)l'here was nothing to do but t:r;7 to 

~'°'1 

gu4i;s whae-t~~might 

'M.. cJ..,/~.QpQ.64 be, by trial and error, and ~ 

IAtPi:eci ~ en 

~: 

+.11:m.:.eaej;lf! If a 

fellow was foolish enough to use a word like '\ciphe~ as the basis for mixing~ Ii. 

0'40 

he 1.d be likely to use an associated word,..,~ the. basis for mixing the otherl• 

Jalll I tried every word in ~ mind ssoeiated with the word. ~i~e~, one after , 

ti> AAJ,...~. s ·Jb~ ).;.A.i_·~~~~- the other; and it took. minute\" ~ fl I exhausted nr:t efforts• Mil Mrs. '1:.. 

Friedman, who was JJ\Y right hand man at the time, was sitting in another part ~ ... 

of the room, and. I said, HEl.izabeth, will you stop what you •re doing and do 

. do wr- ~ -a.""'° J.O 

something for me? She said, "Wfiat?" I said, trMake yourself' comfortable. I 

am going to SfIY a word to you, ahd " I want you to· come back at ,me with the first 

~~ ~ ·~o..~ ... hn~~~a.,,,J.. 

word that,,.,"eaes to your mi:r.d." She"said, "Shoot.n I said, "Clpher. 11 She 

said nMachine." That was it~ In about ten minutes we had reconstructed the 

~phabet and solved the messages. 'lhe first message said, "This cipher is " absoluteq indecipherable." We ~~ a...+:;._ the solution to Washington, word got to ~~'fro~~ - • ~"1, 

Lo Mon, ancl/.. When I- got ~ 'u, France I ""3n 1 t very well liked by our British 

friends. That Wheatstone principle is attributed to Sir Charles, but not long 

~WM 

ago by sheer accident I came across this device: it •s in our .1ID.1Seum now/\ ma.de 

- ., -- / - ·--.- '"'- .......... ' /' , .. 

---

l 

t 

l 

; 

. 
\(}.; ~ 1J . Jo.uL e,jk ~ ~ 

' ,,....,;· ~'~/ . . ," 

~~ u.~ .. ~.W~: W~_, 4 bY. a Major tte~111!1 Wa.Qsw rth,,,._..-., f.8:!!. __ aide to Gei;ie~al"~!'en o.f Revolutio~ _ 

~~~o.-4. -~6\0 .. ~~~.&~~ ...... ~~~~ > K~ .. fame ~ 

a. _. Tt bears on i - this is a very poor1icture - the date 1817, while 

WheatstoneAdevised hisA describea 

'.t· 

in 1870 ~ come now to a cipher"allegedly 

~ 

~""· ~~-d"by--;·:Fr;;-~,, -·aa·~-.-;;~;-'.c~l~d~cipher " y·I\ cylinde;. lh~"c ~~ nsists of 

. I .lO r'·. · a 

~ 

shaft on which are mounte~discs which can be arranged in: keyill&._order,, .each 

.rw....'1..~ ~~ ~~"'f>&duu ~~~ disc/\.· having a different alphabet on it. 'l"ou fine up the letter~ of your plain ~ 

~ ·• ~\\ 1\1 • .. ft L ' . U>• ""' -, ,.. )\ \,() ~ ~~ °""'~ ) 

text message: "Je~uis I am indecipherable)A and for your cipher ~ A f /\> ,_e.~~ :}LA 

~i:-1al.8at you can take any one of the other tiudr '*' s hor~zontal lines. ~oks ~~&.uJ.~ ct -1..t! ~~~. like ~-excellent principle, but quite readily solvable th~ days" !he princi- ,... " . 

ple,, however, was not invented by .Bazeri_;s; it was invented by our own Thomas 

~~~.e... " 

Jefferson,, and 411ere is· pi:* 1r his description of.;:"~~..J:heel 

» ·~ - ~pher, ~4' the s ama principle. I had an interesting tt ,... · in 

~ ~"~3Um.A~+o~fo1'.~· . ::i.j~ -~ ~ connection with the definitivcf"~Ritf s;:~welcs · beliig wblished w /\ " p~ 

at Princeton. In 1915-16 a United States Arm;y officer by the name of A. Hitt i~· 

~ted~t •-pr~ thi~ime not in the form of discs, but sliding strips, you see; .-, thi~ 50or~ginal model. .114rs. Hitt came to River-

~ S WOAita- , ;_ ~~~~~ .. ~~~ . bank,,' · · , · it was pretty hot stuf'f•-Mlli~he put up a chal- '~· /~~~~ ~!. ~~$~.~~= 1enge message, ~I solved ~he e:Baibiienge BHHf!e bynocus pocus_, I thought to 

A M,y • }~ ~ , . I\. 

Jl\VSelf, ''Well,, this lady,J\beautiful and charming, an:i so forth, but she doesn•t 

know much about cryptography. What kind of a key would she be likely to use 

for mixing up the order of the stri~ Well, she might use the~ 'Riverbank 

Laboratories.'", That was itr In 1918 that same principle was adopted by the 

United States Arms ~ignal ~orpsj there it is,, the M-94 device. 'Ibis, as you 

"'4ab .~$""~ ~ ~- ~ 

see, /(S mixed al=b~an :,a~;:;!~-~ ~n~~er you 

please,,-exactly the~~ prlncipl" We used r.for :uite a number"o~"'years ~j 

~~ H .. 1"6 w~~ 
e, RE~ ~D:~?~·~ •. 

~N .~~~¥:~~ru~...u....~~.~~rw..r. with ~ sueces~s. R was aet p»o4\lc:&'ii j,,g, t:Hles 1tt1J~-be. u.ssa is ¥1.QH,4 • 

}~ . -~)~~~~ . .;h~~~ ~ ~ wie.,.. Cl4" ~ ' 4..,.. lfA,. ~, ~ ~ llN&, 

' IN ll~ M--,a~~ ~~ .. , gent em.en, is a picture of the very first SIGTOT'Eil one-time tape 

cryptographic transmission machine, produced by the AT81.f Company in 1918, too 

late to be used in World War I. J.·he principle is: ~ere you J;r~t~ 

plain-text message, here ~~ -~e ~sing through a transmitter, 

~1~~;;.~;~~~ ~~~~~ ' 

here is another keying tapeA ~"'different/\ tee:W> l\fops1>~ different2E:' 

diameters.~ne is a thousand characters in length and the other 999. Sil 

" ·~.A ~-~ ~ 1) 

jou start them out at, given"poinfiatljttvbbil\s pos::tttow~ 1'aese two points 

won't come together again until you have enciphered 99,9,000 characters~ A 

L . ~~/tiff r· 

pretty good princip&E., but, again, on a challenge,-t.his was after I came· back~ was 

de.mobilized and then~back ~ to Chicago to the Riv~rbank La~ratorie~-;°n a ch~-

~~ o.. ~~..f ..... ,~~ v..,.~11. ~.~~~""OJkara.·N'~~~ 

1:enge,~is was sup}X>sed to"be absolutely' indecipherable; ,,.?aid so in writing • 

.....,.... ( \.lid-~ . f1f" a letter signed by the Director of Military ~telligence, but .&. was able 

A ~ ~~~.SC..:4_.> .• 

to solve the thing without having the tapes, without knowing hOlf long they 

'#"'- ~ ~M4.i • ::>" J)4.. uJ"o.o d.. ~ ~ were, or"JmYtbi:nga ~Pe i.s PiA.Ot&aer interesting solution, but I haven •t the 

time to go into it. 

This is a picture of a new type of cryptographic machine. A gentleman 

)i~ by the name of ~e'oron out in California came forth in about 1922-23 with a 

a,,, ~ o..;.t4 GA Q.. ,. ': - ~ keyboard,Jlotor"'a eema~&981' swit~~comutator real~. ~he current from 

the keyboard depressions~ this side( a fixed colIDltator)~ through 

~ A ,- ~~J":"~~ J~~ ~~.::=-~~aeu-euellliffs egJB:i.~ eut-anr,i se:irrg~~J\a .> 

"typewriter. N&v.,,) that machine had on:cy- one rotor. In about three or four 

years, after collaboration with the Navy, he came out with a .ti ve-wheel .machine, 

five~-, you see, and these are the types of rotors that he used,~~ 
~,.. :.:~~@,f,""~~ ~~ • · .. ·:·/~~~~~~~~~i~ii~-~ t . ...J' -· ... ~ ~N"'2>~ 1.J 

pretty high security. The Navy was about adopt these things. 'Ibey h•a • ~ 

1 

~ ~J.apt>.--a II.. contract for 

4-

$75,000.lOO,_ ~~ ~ ~ that hit 1 

WA-~~~ A didn't even have a dollar ~ 

,.J,-~~. ~ ' 11 

for that sort of thing. Well, ~asked me\\iiat about it~ 80if"'1 said, "I'll . 7\. 'tfi..s-,...----, .. study it." I ~M .1 s~ this thi,qg for about six weeks before 

~ 'S~~a .. J._ I had a really good idea. ~I went-ewl' to Q.&-= i<l:Ot the seetiO!l, and :t -~~Uf.,lo 

said, "I think I can solve messages. 11 -. We said, 

.,. ......... .M ~- d..cafl°'1u~': ..J....OK. 

"fhow me. 11 I said" "All 

t:i- c.---r · right;~ He said, ·x1uat do you want." I said, "I want ten messages set up 

on your machine.11 He gave me the ten messages, and I solved the thing. It 

~.t._~ +o~ 0""4 AoUA·.,.:~, ~ ~~~Akita.~ was a curious thi~ I was getting dressed to go out•~af course, ~obk ~ 

weeks of making distributions and finding 11\V way around. - I had one assistant 

. ~ ~~-~,... at the time - he was a veteran,~-prize fighter,Acauliflower ears and all, 

and he wasn•t much helpJexcept in typing. I ge\ ,tg a peift~ w&e:re if ob cotiid'i 

e<Mr 001.oe 01' nM I had reduced -~~~}Jlhabets ~M!in~1.c&J..ib>o. . ~. 

to a place where I had one line of.: liSeM 18 le~ .lf I could. solve that 

~ wpLQ.,.. ., ~~)~~ • 

.....,..i. "I wo~l<i have. a start~--1\.1. went home ~t eveni~..t\f;reaweriE;J ~wa-i .. ~:i-.~ .a' ~·. "4A. '-'I \'\u.H-cL. 1'..S ~~ ~-~•O:•~;,. ' ' , : .· · . .,.:.. :-··v ;i. . ·-~ 

~ ~~~t~~~ ~~ :e.iS One ~~' l* all t knew•~~~ that A- t. • :•• .'? -:~ c .7 I 

--,-

.... . .: :. . p 

~ 

tile e~e~nsb ure1e 'the e•e kbb:ei& • MS: 1 1••:1 :ia:e ~lslsy lslslse•s 11.'els b 1ie10 ·-

ca-A4~eL.ffa>24d-~~,""~ ::,·~ ~ ~ ~ ~-f"C:. ~"~ ~. :ideftb:i:e&i#q 0

~ 1 I I ••. gettf{,,g dressed to go out to a pa.7t~ tti~t nift fiddling r - :'-. ~'; .._ ·i.' ·-~ ft.#. /JA',~M.. .J"" eAMroQ. 'lo W. ~ A.~ ~448.., I ' ~ ~ ~ 

it:..~.;..t.,.;.. ~~~~~~== '.the phrase ~t w~ (j 

'{ A. ~ Pr~sid~ q! th~ urp.~ed..,.StCJ.t~s. ~· _ ·.1.hat was it I The next day I came in I ~~~ ~·~ 41:foW'"' ~.,.!Mo• of da,a 1~::'e llav,r a solutiol\; they killed the order. I 

TheAfirm went to pieces; the inventor and p.resident of the fi~!ound up in 1 

rto-~ ~~,~~~'.'~~,~~~.l San Quentin for a oC'ou~le_ of years because he;~l'ii dock t8&'ti wm 9e e:botrt - v/ l ()"' ~oJt.~~;.. ~~ ,, "-

"io:u; agls*'9.Pl!I s sQin•e on the ~ that a .l\lavy order was coming through; and / 

when the Navy order di~'~ugh,, the stock dropped to about $2.00 a. ,,·, 

/\. ~- -. 

.........__,.............____.._· --........ 5-4 ~~ ~-\~ ~ ~;) ~ ... 1-··__ \. ~·~,~~. -oc\..~i~,1~~-> - -24- _, · · \. iq1l ,: ~ ,,.r'1<.. ~ ~.;.Q,.j 

'fk 414. '2.l h.'t'"; ~·l l-4tfl ~ ;J..,_,.cafJ..) ~ ~ c- .vJ..e.e.e.,~'9~~~ 
)~..._.. ,,., ·:, -<'\'-.....f ~~\. J;-4 }_ 

a share_. ~picked up some of the $2.00 stuff, went to a different 

part of the state>and 

" 

sold it for il0.00. e~ -The~ didn't ... like 

~ that,, so they put 

him in the hoosegow. 

This is a picture of the first cipher machine invented and. built in ~ 

9J,. ~ ~ 81.t. -6.a. ~ ~~ ~ Y\4<fo ~ Europe,, called the Enigma-;01llm!'Cla'l Eiil@Ha': Here are the Dotors,, you see; 

four of them here,, a keyboard and the light bank. You press the keyboard, the 

~ 

rotors step, and thAil' 

y_.._.:"6-' light up. You I?Osition . these A~ 

.... thiftg& according ~ to keying . -" A. ~ J.,~ ,,. ,.. 

lette:r;is.. Now, also in Europe"'at%eP imab ttme there were other inventors. 

·~o... ~Jo~ Here is a machine called the ~~~which was helf ae eei111g a very complicated and difficult thing - nobody could solve it. Here is a German professor who put out a treatise on the indecipherability of the thing, showing how 

many perJ1U1tations and combinations th~re were. Iaw. e &tM ha; e iverybody in 

. the 

euJ.Ak 

world provided with a machine ~ am a-"~~·-~~p.o~~ uoboli) e:bsie wetl~~ 

~~~"~. ~ 

! 

I 

l 

l 

.. 

/' ,I 

l...same kAf 3 W. ee-...sn.. Well, gentlemen,,. the number of permutations and combinations that a given cipher system affords, like "/be /irds that ling in 

the/pring,,11 have nothing to do with the case,, or at least ver,y~ttle.' It 4~ "~bf_ ~~ ~ .- ... .JI)_ .t.-.. . - D ' . .....i AWiall depends upon Jaew those per.mutations and combinatio~Aare basical.lyA\crypto-

~~ · ~ . graphic • Tl Here is a picture of a Swedish machine of abo1:1t the same period; o... 

~-1\-:--'/f:A... keyboard;(light bank;" ~ 0.. 

~rotors.~a 

~ oi ~ 

~'!•ie ~ different ·~· ~ 'type 

.... ~ 

of Miae H.At.hat. 

~ ~ 

~ 4. ""'--t.........C. 

case. Of course,, the light-ban~ was slow. You had to sit down and copy by 

" hand and so on; so the inventor of this machine hooked it up with an electric Remington typewriter, and that was the first model of a printing cipher 

ma.chine. He later modified it so as to have the printing 

~ 

mechanism se1£-

contained in the cryptograph, and that's a picture of the 'be" it.Hi.t from the . A 

outside~ and there is a picture of the internal workings. There is the keyboard. 
~-h~~4e..._~~.· 

t::~~e~~~~ ~~~~. 

~·~a ~··~ ···""·f:'e..~.i_-~~- ~ ""'-~·... ~~ a_ Q . "'-~t-. Sc 1 •. • .""' ~~. ·~- • 

. . .... . ~-:·&£·,~-.. - . ~~ -'.:t~ ~ .. · .. t!i?t~. 

. -. ~~r~ ~~~ J,. ~o~, Ooi~~~ ~ ~~- - • 

,,.. ' +o -~ l: f ~ {. ;te~\i.e_ ~""- .4 ~· i~ 

ca_,'.~ °"-cl. ~~ -~ . ,. a.. ~·~ .. ~-~l ;~ 

tQ~+ _M. . . ~ ~' .· .. ·'iJ ~ ~ ~- ·_ -11~.~~ 

~~:'~~a..\)~ .~)~ ~ ~ -..........k,, 

trb~~~ Q,_\,~'..~ ~.~· . . ·- . 

'. ':: . . . . ' ' . ~ 

. . ~ ' 

~ ' • • I 1•• .~, 

•.. . r· . 

. . .. . - . ,...... ~ -

. . . r . 

~. . . • 
~~~~~~~~~-~~---

r.~ • s::: ~;:~lB&li srmms) g~ere a~~ _t~~ ~witching 'co.IDlltatorsJwith 

pins~tft&.~ eeald put in and outAeffective positio~)like on our ~nverter 

M:-209. Those pins drive a certain leverj here_.,which drives the switching 

coi:;;:i:r;)~;,.:: ~ .~~. ~ you ;::tr also switch .. ,_ the e!!ects 

~ the comt~ors. Here the printing mechanism. This style you'll recogA ~~i.:.o nize as being veey similar to~le in '*8 Converter M-209. A-.It printed 

on a tape. 

. . ~°"~J ~f course, iR ~:Res e &era considerable thought began to be devoted to the 

,.. 1911-1, 

encipherment of teletype communications. anti 91¥io 11 :r;~ide from that ~ 

A.T."·1t·:r. Co. A. ~ ~ .. ...tt;. ~ .. 

machine that I sh;;~ this was th~.l'irst of the teletype cipher attach-

,..~~~ . ~· ~~ ~•era.tr" mentspan inv"ntion of Col. Parker .tiJ.tt, who retired fran the A'I"IIIY and joined 

,, ~ ~~ /\ 

the International Telephone~elegraph Compal\f1.aatt devoted himself for two or 

three years to producing this ~~-tbiOi ';Cns. -wu-4i " paJ~ ~ fnere 1 s the interna.1 

mechanism. It had keying wheels " which affectea ~~~ the "'sands el· t.he teletypfl 

character.S. These wheels were of differential diameters. This one had 101 

~: this one 99, this one 97, and so on, down, so that it had an exli~neq long period: but the length of the period, again, like11 the birds that sing 

I\ 'Tt.,. '°""' d GL_'. Ar 

in the spring, has little to do wit~ the case. 'Caai8 'IM.R8A was put into test 

usage in the State Department, ~r called upon the War Department to 

make a security evaluation. I was assigned to the job, and.,,- had an interesttime with this. The State ~t put up a series of messages. '.1.'hey were 

stamped in at a certain hour,AlO:OO o•clock in the morning; l.els'a oa39 •'"-

..-\1\. • ~c.JL.-~.) about 10: .3~~he chief of the State ~epartinent conununicationsJ called me and 

said, nThe machine is out of order, Maybe you can fix it·" I said, "I'll be 

up there in a few minutes.n I ~lipped a piece of paper in N9 pocket, and~ 

~Joo}~~~~~~ ~~~J.. cs~ w~,. 

~ N~. ~ .. g,~~. ~ ~> S~_as.o~ /JJ'O-O ~~~·"' <J <J -26- .'· [ ~ ......t---"---:---'-'~··--~~ . 
• R.E:e.: .. iu~¥02 e . ·~ f~G~r '~l- -- .\A_ -d .....---- . tL · -~ ~ _A - ~j ;·,.-A: .. . 

. ..,4s~, 

~ I ge+. liP t:Ae:Pa 5 !Ile eei:Q.,. 11 I •m sorry~ -~I tried to catch you, but you had 

already left. It's working again, so I won't trouble you.n I said, "By the 

way, I have a question to ask about those messages." He immediately got suspicious and asked, "What do you want to know?" And I said, nHave you got the 

~~~.o··J.._ plain t~ to those messages here?" 4\si- lie drew ~e'it"' lt-P· el.est;, ea he • 

said, nwe-el, yes • 11 I s~d, "Where are .th",?" He said, "In that safe over ../!. 

there.11 I said, •!Well, I•ll sit here. You go ·over to the safe and dig out J 

message No. 7. I want to ask a question about it·" Very reluctantly he got .Y ~~~+a MQ.>'lk~~~.jfl· 

up, opened the safe, pulled out message No. 7, and/\said, ''What is it you wan-! 

. ...... to know?" I pulled out iey piece of paper, ~ 

and I said, ''Well, does it say --" 9-- ,vJ.._:~ ~v 

and I read him the whole message. Het("'umpblJ" sat down .. on th8 i'loor"'- That ~ 

was only 35 minutes or so after it had been receive.d. .&:he ITT Company butaed _I~ 

't f': ~ ~th~ . tm t d • d • ~ ~ , - J. s ... ngers on .tn1, gave up e inve~ en an never trie again. I\ we j(J ~ A ~~~~wo~_,~ --------. ........ _ 

~the AT&T compa,ny studying"-ijli a!t the rr&T Company;~ lataP QR I'll ~· ~~·j

a nu1 a e• 

~ 

+;,,. aee• the 

~~~ 

IBM Co.m.P!D;Y ,_..... ala o tried their hands at it ·and 

1 failed. "he A reason~ i11a:_:{~t~~ cr.vpt&IWytic guidallce 

~~~~·,~~\) 

nobody can inv~that•~-~~ng t9_ stand up unde~/\ ]~~ie attack~~ Q - <J\ -This is ~o~;erter M-~ which we adopted ;A.~ Swedish invention ~Ao is 

pPetty good. ~~ tfbe onfy thing we cane 

~ 

across~a~ ~lq4o ~~·it~ for our~ .• use..t..CA: . 1', ~ . '1J> '-'~ ~~~ • .L Her~ ar~. key.j.ng wheels. Her~ tf:'3n:...:_.,, !hichoUtt.affected by the key2;1g whee~) 

;OA~.,~~~J?>~~j~NV..i~~ o k ~s... . /\.wr:a'B affecy a print wheel,, ani there is the tape. A very neat gadget but o... ~ 

~ ' 

/\not too secure when you have two or more messages in the same sett"'~· 

Now,, the rest of the time I would like to devote to a brief discussion of 

ceyptanalytic gadgetry. This,;~ a pict-;:;i,e of("!o iey: kn~ed~the first ceyptanalytic aid, something I got up at Riverbank way back in 1916, I think it was; 
• REF • .£,.J-~e~ 

(;<.- ' .,.; ' ) ~s-~ 

a pair of glass plates 1rW " ipt&:am guidesA groove{.;. lea conlGi alj,Qe 98ese 

"bhinr• up •n' ien& to align letters and study themJf~a~ don't~ .... -....- . ¥ I\ " ( fVVV -- -· ' n'\ II\ ,, 

/\.why_ ,aa• a1iiil: I put ~owrl~e United States War Uollege. I had._~°,!elations with 

them, but it was nice 

1 

to hand them a present, so I did that. 

F~;, /\I ~~ 

made~ with 

lJ\Y' own handa. This was a wheel with rubber letters that I could arrange in 

to '"W\.-Ao.. '::f ~-~, / 

8.I\V order I pleased;" fA9!" •ere :ceznmra.sle!J-lhere 1s another view of the thing, 

and here•s a whole bunch of them put together.1for whatever purposes ~ ye~ '*"' w&Rt ~ 1 . 

Now, from that ear4' start have come a great many very interesting developmen ts. Here is a picture of a 

~ t:Ai II@' dated vctober 30, 19.34, ·~ waere- J. sent lf!l'--

r -~ 

wg a •• i• to Uaptain King and Major Akin, now Chief '=iignal. Officer, in which 

~·~ -~~ /\ 

I ma.de some remarks. You can s.e\ ...,, te~ci pr· '?r ma.Ybe~'Oioo~ on this thing. 

I was asking for a little bit of money to get some IBM machines. I said, "Please 

do your utmost to~this across for ·me. If you do, we can real~ begin to 

A 

do worth-while crypta.nal.¥tic work." Well,, 

I 

the plea was successful - we got it. 

t:LJJ.. 

Here• s a picture of part of the contract, you see, A.the 12th of 1'1ovember. It 

~ JllOlltb. And here io what we.;._ere gettf~~ ~.~'.:'!"~-

When I think of the ..Uiiona of dollars w~pent Work-~ thia 

sort :f fe~'~that from such lowly beginning~:.,\~ come 

that ~~eat estabfi.~hm.ent. This is a room, just one lira! Win't ,in our heaclquar-

~ - " 

ters during the war, with tabulating machin,tf, ~~~'.·lu:'.\ one after the otherr 

~IBM macii~~ 4~aa:,·y~s~ 

You know the picture the average person has of a cryptanalyst. He's a 

long-hair. He~ ~ thick spectacles> ~.4~~ md'"-whiskers r crumbs in them and so on: 

4J1 he goes into a huddle with himself and pretty soon he comes up with an 

~-. 

' ' . 
'(" --.. - ~, 

answer. Well, that•s far from the picture these~days. ! 

I\ \I ! 

munications intelligence is~i business now, a°'\ I want to sq a word or 

two about that ~~ HI'~ &b? 61..:_j{,,, iai:!!lg'.. ryptanalysis • of ~ ern systems has been facili- . " 

tated, if not made possible, by the use and applic ion/ of special cryptanalytic aids, including th~-- ~..i_ of high speed machi ry of the type pictured~ 

5,.,...e.t»tA. ,w.~~~~~auA~ •. ~ ~ here. standard. "*- modifications of those ma.chines.. l'IA..re importantly ~ ·~ n ~~ I'• •.,.. A 

~he inveution1aat devel.ojmOll;"of el.ectroni?. ~- As I said before, the . '{ 

number of permutations.,...we:il

~ 1 J'"ll get tu t&t !ii justs a mmeM:r• :J:ne Ml!lll9eP: ~ ~ 0.. ~0··-. ~/Jll- ~ -~ pf pew·* r'lli~ and c.o'tnbinati.ons" iR~isi;i•i-too signif~cant. It•s what ·. ~ ~ ~~"1 ~ ~~ ~~~ ptsi&Ja, ... ~ (IJ\IL. ~ . 0- - they are. basica1J1.. In modern cry~ta~ys is what you are up )lgainst f a great 

', 

~J multiplicity of hypotheses 

/\ $1"•.l.. ~ ~~ 

mu.st be tested out one a~er the other, until 

• A ~~~~·rdld~'r4'.:=lr"-•·~~~~=tP";~~"'*N~ 

w~fi;d th~·~;,;,;;,.;;-~ " . . A " ~,,iMH wUae"; ~ 

or- ~ speea 

~ 

eiQ.•s i:iAIRbined wi4Jh2'"1::U:1'&ieti: •ilaeda~I want to show you what 

A~P-~~ :.i- ·;, -, 

• '· 

some ~f the~se lo~ok ?:J.ke. ~eheHee ,.811 a 1e+Jwn*"t~('s;~ ~Here11 ~sA~- eae-.~ "W' .. ~ =fl.¥1~) IAJ.t. t.4/U/; ~ '\.- IJA ~~ - 141'•• Rl!ie ·~ ins aad.gfi-. Thati •a a ~l:i!ed 4;8~,. I ; 

~ ~· .t_b.._ - P ·~..--- - ~ • I ............... _,,,_~......----..... ~ i 

• ~Ntr"i!~w--:i~.t...;if.Qt~~..ui~~~ a ctyptanalyticMH.iBg ~ente:r:, ~ i ,, .~, to , _ _.. 1 • ~ a..~patfPA ~· l ,._. · duplicate"what tho~ands of peo5on the enell\V side are doing,();tt . "- ~·UM'!:)*°~~ ~ ! 

takes thousands~£ T19e:f!'li8 ~. p& the message .,,.e/l the wmfi:!us headquarters . J,....,,,,J. ::" 

~~. " ·.~~ ~~)4Q.,~t.\~cw.·--~ .aaio sa .e../\'il'i1ey all flow into one place, and you can orily have a cer!ain num- .; 

ber of people to PIM •tfE 1 •••9!H 8llli process them. If you have the key--' ~l 

then it beco~s a problem. of production-line deciphering; so °"e devisell special 

machines~he messages.,!: ~=~~~·~~'tve aey resemI 

j 

.I 

' blance whatsoever to the enem;y •s cryptographic ma.chine, but :i.t 'i' a a•~•o11 ; / 

~6Q J~ . it duplicates what their machine 4oes, a~t a high rate of speed. io MftJ:ti's ;' 

~~Wl~t~~ ~ / 

a picture of such a device. 'lil:11 a i:1 ~ tabulator, standard tabulator with a / ~ ~ / 

a-~-~·&·~ 

..... ~-J~·'....i.};-2c~.~-1~~---- __ -,.-,:_-.,-:---_-:·:'~~~-a-~ _,..·~.~ ~~ v, ~..,., 

~.~~r~.>~-
~ --·/ 

/. )t REF ID:A66402 .• 

_,__ _________ _ 

1--t---------...!....-

--~~-~ • 

----/JAi' 8t ... .J.-o .. 6+• r .... ~ 

~ ·~---~--~~~ 
\ 

. ---~~.~-- - ~ ~-- .. 

REF 

-----

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r(RE-F-.-:1, ,ID~§ 9,:~~ • · ... "<4~' .~·,,...-"!'~ l 1, .. (1.-· • --~ ~1 

A...,_,; · A' , ·f i . '., -- ..,,: f • ....... ,, ..,,,. t • .. ~. ~-.: l'.i.. 

special attachment devised by our own engineers susceptible of what we call 

doing 

~ 

"brute force" operatio~~u are t~~-to solve a thing on the 

MA.~ a...-&. A -. ~ ,,__~voe..., ·"'OIL °""' ~ ~ . basis of repetitioflSA Well, if you•ve got millions a.Iid millions 0¥ letters, the 

location of those repetitions is a pretty laborious thing if you have to do 

+e..t...11l11~ it by hand, so we speed~ uIJ\ A machine of this kind will locate those 

repetitions~ne-ten-thousandt!Js of the time that it would take to do it 

by hand. Here is a specialized machine; again a tabulator, with an attachment, 

here)that is{used for passing the text of one message against the text of 

another message in o~der to find certain similarities_, or perhaps ~ di.tiYL. ~~ ~oewr.o4.~.) ferenc'is, and it does it automatically. These relays are set up according to 

A 

certain circuitry; .allJlt you start the machine, and low and behold, it pr~du.ces 

~~~f.;t'~ a printed record of the message~ ~i;. 

Here 

~ 

is a machine which .L personally call "Rodin. 11 Rod.in was the great 

IC II 

French~ who sculpted a piece of engineering known as 'l'he T.hinker. • 

o.fl-.d ~ ~ ~Ad'~) ,,., ~ ~,Ir' ~ ..a. i.;t' 

This machine/\ thinks. What it does is/\ 1elt g:i1e n a certain number of hypotheses and you tell it, nNow, Y,Ou examine these hypotheses and come up with ant 

~ 

. '1b. a.m."fi.&. ~ ~ :' 

answer. 11 The machihe takes the first hypotheses, let•s say, ;;md ::i:i examines? 

"' I\. that, an:i if it com.es to a contradiction.it says, "Hell, t.hat•s no good; I'll 

~~~~~~-~) go back and take up the next one. 11 And so on. I\ .efie after the other) at a high 

A:.t" rp,_ \,.U-Q c .t,... 4.-

rate of speed,l\.~electronic speed. 4 nat 1s only one small section of the"'-~· 

Well, we •ve got left here a few minutes in which I should say something 

. O"\. ~~~ ·~~~- about the current employment a.ad manner of employment. !'012 sea., I've devote'(\ A 

two hours to talking about the background am development and haven•t said ~ ~ 

~ . 'J:A ' about the manner of employment. '\!ten, we c?i~ ... ~~-D that under , 

various 

' 

headings, but it is ~ obvious from the disclosures ~-----u~~--:- of Pearl Harbor~that 

~ 

~ ~ ~ ~ 

the manner of"employment .. inl\.World War II must have been very efficacious. I 
------

----- ----- ~----

. ~\---11-11-·- ------~- -- - ------------

-. -~~ __ - ---~~--- ·-----· 

----- ----·------------~--- --------

--------- --- ----- --------------------- -----------------------·-----

---------------·-- -------------------------------------- -----

--- --------------

-----------------------------------
• 

{ '> .. 

wish I had the time to read you the whole of the Marshall- e correspondence 

that ~article in Time was based upon, but I think that 

K -

sa:i next is pePhaps a lit.tlae &a.ti-~ important. 'lhe interception of -foreign A 

communications and subsequent processing requires the services of numerous 

coJDlllllnications and other trained p~rsonnel. In order that ~e product ~ be 

most useful operationally;and not merely historically interesting, the~ 

~.~ntercept traffic has got to be~-~ expeditiously 

&LA 

'be-

~to~ 

processing cent.er/, and after processing the 

~ 

,.!esn

&o,..,r1,. 

1!:f must 

~ 

be promptly transl\.. f"tr ...._ I-fl' ~ ~ , 

. mitted to the jee~ie' ~p eval~t~?--t~m an intelligence point of vi;3 aiA& r••:i .;fi- ~\.Ji O'f' ~ .,;f- ~ ~t-··~ ~ ~~~ ~ l'l\A~~ to other intelligence personnel')ani'\'in some cases where it makes a difference.,.._ "-. . "'.ouc. ~ '.;t- ~ 

a great differenc-; /I seco~ perhaps - /\transmitted direct to operational commanders. 'l'he ne~d for trained communicationa personne 1, intelligence experts, 

au-A.~-·-~ 

radi~ engineers,~ t.tie~e!!l'll~u't'iri:P-l'!e!llio!!:'8et111ts.,A. mathema~icians, linguists, ant! cryptanalysts.) and other highly skilled personnel, military and civilian, is there-

' 

fore quite obvious. It takes a large organization. In 1939 or 4C1 the totality 

of personnel in the Arlll1 and Navy devoted to this work was about 300. In 1945 

we had 37,000! That gives you~dea ;;;i':. t takes, aside .from millions and 

millions of doll.a.rs for equipment, both communications equi?.118nt 8l¥:i this type 

of equipment that~ ~ou a little story aboutTSome of the cryptanalytic and communications intelligence processes can be accomplished in the field 

to meet certain l:mmediate needs of field tactical commanders, and these have 

been provided for by each of the three services in order to meet special needs 

. ~ ~O,J-~~ 

. :~s category. But - communications intelligence processing i~uscni? aJ ?'F-t 

~u.t\: .:£.°"~-w-~~ ~ A 

"complex ant:..-~"'hctivi_.) __ much of~ can be done well on]3 at major, 

large processing plants where the limited number of highly skilled persOllllel 

-31- -it-~ •.. 

\ ' . 
., 

can be concentrated an:i veey special specialized cryptanalytic ma.chineey can 

~cd:J.,~~ be installed and maintained. You see, we have to ft&w;e a eeBeen+.n1lsioa er tee 

~c.a ~.A q... b'/... ~ ' 

personnel"- )lfiere are onl.¥ a limited "hilmbe1k You can 

1 t find people trained 

in this field in civil life1 because there is no need for an activit$ •f 

H:>~ 2U1~ cryptanalysis 

~ 

in commerce or industry, .Md- when war comes we don•t have a pool " /\:. 

of trained :pe1 e enne!J: !=& 11injl H r. from which to draw to auj91181lt our forces. 

A i.t .•. ·.i : ..... '~ 

we •ve got to take basically intelligent people with good background~ and good 

education, and train them oursel'.fes.~ ~ ~ A~~~', ·~~~~~ ~~~~~~-v::~J Now, I want to s'ay a few words about the very great importance of coor- '1 ~ . d~o~. ~f co~cation intelligence activities with .tae gem! eil:: intelligence or<fand tactical situation. There you•ve got to have certain cover methods. For ~ ' 

example, when a decision has been made to take action based upon co~cations 

intelligence, a careful effort mst be ma.de to insure that the action cannot 

be attributed to communications intelligence alone. Otherwise you will kill 

the goose that lays the golden egg. wh ... pos•i"\>le, action JDUBt alw~ be pre- ! 

ceded by suitable recohnaisance ~~~~~~a-I -or -other/\ deceptive methods. For example, if r. 

there is a convoy out in the middle of the ocean and suddenly it is attacked j{ 

by air, the question might well rise, "Well, how the hell did they lmow ~e ~ ~~~~...-..~ ~~~~~~~-G-4:X-~ were. out, here?" You see, you make cover fo\. -thR. WAnother aspect of coordina- ,.,, .\ ""'"' " ,, 

tion between operations and communications intelligence is to be mentioned. 

The communications intelJi~~: =be carefull.¥ ~e~ give 

~oJb I\ NC..~~. /\ 

optimum coverage of operations in progress) There are just so many facilities 

a~~n'tiig e&ud:i:ce ", .. communications intelligence 

" work) lihe1e+s jl'l&t B"9'FP)EdU1li~, and there•s a great deal of traffic, an 

-.32-

.-· r' ., 

' \ . \ ·' . • .. /)· :1' ~., -:::~ 
enormous omount. ~ b-;r it can be " -

fA.;0-

proc essed}\ fou•ve got to neglect 

the rest. ~ Tt•s 

~ 

essential, therefore, that the ~ communications intelligence peapd.e be abreast 9..f .... the current situation so that they'll A t.<Jl+o 

, . 

know where to put their maximum effort. ~hai.r knowledge of the tactical situ-, 

ation is .aLw essential to a 

' 

proper interpretation of certlin~•wwod,s• '/\44-·~ ~ It

~. 1s 

im~rt~ correlate the communicatio~ .intelligence work wit~:f.ions ~ ~ .... J..__JAL ~· ~ a,···~ r--- in exuberance our ait'e1af9 knOck out~radio stations, the vez-y sue-

/\ ·~~ ,... cess of ~operation has repercussions -upon communications intelligence. You 

~ ~~A.~- ~.\~~ see~~ those,.._ etM. .make~ unavailable to us a lot o:f traffic; soei- that,..&M ~ 

d 

wJ'\... 

be coordinate'k 

-te..a; CoHtN1" ~ 

There is another, reason for beiM vecy careful to coordinate, 

and that is that ~aid· cipher .,,ataw are ~sually world-wide 

r "- .. ~J,, or area-wide in d~tr~bution, and if you don't coordinate ~~operatic~ with 

your-ft Cf>>ltt-1,..-so as 

~J to cover up your source of information, t6q ./;A·O~ 1iitel'8 ._,-~ eC\sasv.te+ ~~ '1Tt:-0_ 

~~-"~~~ I\ ~ '"~cO'!Pr~s~hich would have far-reaching consequences. you see, a commander 

~;,.. ll..~J(oMtNT"' who g~ 4ie •ilMtff and seeks a minor advantage by using it in one 

A l·. 

~ 

localit~ma.y deprive 1611 commanders in other areas of much greater advantag~a ;fit ,;QQ. 

youfl..don•t ~ ~~ .compromise -it&~ the source ~'t~~~..A:.w of infonnatiol)/\ ~Wu.le ~ ~. knowledge 

and experience point to the necessity of exploiting evecy possible advantage 

that the situation affords when you get this stuff, andl\the 

L..ii. 1-«-. ~trL 

temptation ~ is, o:f 

course, very great HI tsko h ' f 'B•'l*l:\ to use the material whenever it is 

available, nevertheless this often may lead to carelessmss in its ust;.,which 

may lead to jeopardizing the source. Of course, the full value of communications intelligence cannot be reali2;ied unless operational use is made of it. 

~r, when action is contemplated based upon such intelligence, the possi-

~ com~mise of the source DUSt always be bome in mind and the danger weighed ~ 

· .. ~· 

' ·'4"\ .. • 

- J • • - .. _,l ... "\,.. .. ... ,_ 
... '"' ...... ':' ~·· 

.~· 

against military advantages to be gained. Minor advantages never alone are ~ 

sufficient ground for risking the loss of the source. 

well, gentlemen, it 1s 10:00 o'clock. I'm sorry that we don't have arzytime to answer questions) Pigh"6 ~ I welcome you to examine the exhibits, 

~ .i...-. T~ t• h · 1 d . ~~ I · 11 b gl d .---"'P'3TM1'5 1 I can answer a ques ion w l. e you are oing ... "'II.. wi e a 

to do that. .J..hank you very much for your courtesy and your attention. 

~34-' \. .. . \ 
REF ID:A66402 i ,,. 

~·p'/ ~ ?' Of.'1 'll!!!!'!o-.. ~ ._,1 • ......._..;_._~ ..... ~..A .... _• ..... ~~ ... ~~--..:" .... :,_ .-~