TBRUt Oh.,Army CO!ll:D..Servo 

TO: .\sst.cso 

Letter to the sec. of Stat, f orimrdinB report of committee 

appointed to :sesurvey State Department cryptographic systems. 1 incl- #1- ~ to CG,ASF for /s/&m.,,'1A(J,l•• w/ 1 incl- iroposed Letro to Sec. of State trm. Sec. of 

War w/ 4 incls- 1!1- A-Sum.Rept.comm.14 Jan 44. #2-B-De-

• n n -

8 • ·lb'F. A~"T1ouan4oan1e4 W C:O.t A11F ,. :=.' -.1, ... \ .;."'"~ ... -, ' I •I 

Declassified and approved for release by NSA on 04-08-2014 pursuantto E.O. 1352a 

-------------· 
REF ID:A67293 

" ' Addresse~; ·· . ~ ., . 

Co~~-·~-~ener~, · Asi .. · · 

Roorn,3.·~:,2·"", · · ··· ·" 

. :_.• .. , 

. ~ .. ,• ' ., 1. 

'" "":' 

. '· . ~--_'... W. D., A.G. O. -~~~ ~o. -~6, 16 July HH3 (Sec ... \~i 3~0--:5): _ '.o •• ·,:::· ~ ---~ _ --~~A~SIFn~· •.1£i.•·htw ;",, t ;,; .. {Mf.•Wi}'J' '• 'tW':''\r·1fa,j ':ri 'ifrr{f1:·:.i;.~;,:,,,.3:;;i(:1,,;,,,;~;., 
REF ID:A67293 

... " .. 

. , POSTAL · ..·Registry }To~··· 

·;.., '•..,,., 

,,. (addres~ee'a: crip~) 

:p-μp~fCA TE) 

DOCUMENT RECEIPT. 

!t~·:~:..L·i{':\~-,:J~~ ,..; 's~:-;:·k,;.-~~:'..f:/~J,·;i;:· ·t,;,., 
r 

" WAR OEPARTMENARMY SERVICE FORCES 

REF ID: A67 2 93 t Q ~ I 0. • - -.;. -'I& 'kt 

•!EGE · TRJ4tsMITT)\J...~fi- T 

l i ~. · - --· I o.f C!e 

Action 1 

r;. ,:! ~· .... !. .... ! C:i1...cr r~ - aa..:K-o.1 • ••· r . ..,.. 

L •• :.i;.s Date -

~§!..~ .... ! ......... !.!:~.~ '+~ 

TO Ass1stant Cb!e! S1gnal Q!!1~e~ (Serrice, dlTISlon, or orpalzatlon) ~ 

THRU: Chief', Army ~) Oommunicati.ons Service~ 

Letter (Brpch or un~ of State, (A•wu;gall) 

Subject: to the Secre ary forwarding report Of 

co:mmjttee appo:Intea to I! e snI?:sz:e~ State Depa J:?t.me:ct CJ:!~t og;i;ia pl:;i,;S l'lle Ne.. systems. 

J,4 Januafjf l9l~ :1: 

I (Writer's last 11111110) a&e) 

FROM 

(Service, dlvlllfon, or orpnlmtion) (Location> (Telenhone edenalon\ 

Attached hereto is transmittal sheet for your signature, 

same to accompany letter, for signature of the Secretary of 

War, to the Secretary of State, forwardi.ng the reports or the 

committee which made the resurvey of the cryptographic systems employed by the Department of' State. This has been coordinated 

with Colonel Clarke, Special Branch, G-2, who concurs in the 

recommendations. /JJ:l.uil;;::_ ~ 

W. Preston Corderman 

Colonel, SPSIS-3 

Commanding Off'i.cer 

c 

·T'&~ --~~~~§,~gcuri~k 1~~~4~~·~--~---

• 

r 

1 Incl: 

Incl 1. 

, ' 

Trans'Ilittal Sheet w/inclosur~s listed 

thereon • 

W. D., A. G. O. For:m No. 0105 

.Apr117, 1943 

1•tt I 3 I ~ 3 3 ~~ 

llECEIA£Q 
·~ 

~--

.. 

. - . 

-RE~7293 i\~-lO~~--

~.~ .. ~~tllltC I 

- ~-- ..... ~ -- -

COlllBIDdiDC .,_~J.Arll:f S."1.ce Porcel, loom I I 111,, Pentagon. lldC• ,.... • I - p 1 iL$44 , S -

hlur''\IC)' Cryptob?'•:,h!.o Systorua 

IJiopa.r-taant or e tatc 

Chief Signal Officer 3E 200 6604 

20 January 1944· 

A:ttacheii berato 1• dratt ot propose~ le"t.,r ta'!' •1~­

ne.ture or th~ 9ecret~ry of nar to aoem:ipany rrpo~'ta ot the 

carml tte• wM.oh mad• the r•s1 l1·wy ot t.he e1mt'l)V'l?'11o ayete'lls 

eJ!li:ll.oye.: bJ the Dep .. rtment of State. 

l Incl• Incl 1. Propotad letter tor •ioaA~..ll'o 

et tt:• S•cr-ata17 ot A&!' w/4. inclo•~• liete4 tb.areon. 

SECRET 

H. C. Ingles, 

Major Gener&l, 

Chief Signal Officer. 

__ .. _ - • -"-· _I -----~-
,..,.. ~. ;'UM11tt.M-1 t 

REF ID:A67293 

--~;:--=-:-..... 

SECRET 

WAR DEPARTMENT 

WASHINGTON 

-..,...--- ---:. - .. 

JAN 2 2 1944 

ll•l~ 1.• lM\do ta ,...,. la'w or uoww 23, l:~!JJ,, 

1n llhtA:t 1ft l'!IHIR&~ 1llat fa l'•IU'WJ' ha ¥14• !.1.f ~ el'1$t.fl• 

tl'•~bl.c S1._..._. -.pl01.s to- \..._ •RM.t•\ ':Jt J-tA\ft1 &a ~.t t..'\e 

~~• o...s t~ t.1'0 ;-re..-...-u~ •t 'Lib¥ R'ti"Oq -4tf 1\s ~.PlT 

croal141ftt.h1 ~1oaU.a. 

?he "~ iroi;ott•t• b.r :r• u• ~ ~i.tacs • 

.:. ·UQf{Hd: Q(f dtli.&11~ :-•;11l"t.S fJ/ the fl:td.1~• at;l ~~M~cf.a• 

U.-:'fl# Id tba e~it•• •?A>bt.W b7 Viii ~Ill .!¥'tun~ 

.!:tpal ~\1 Ap:".&1., ;llr~o\ W \hO 61nto't1'\'141 ~ ti1- :ht•t 

ss....i :t.n.o.-. ·~ t.\l.a l•t.'°1' •• l~?UU ~ ~• i.· 

~ o ~ rv u ~· ,auU•lJle., ldt.bu "• l.a1T• ot UHt 

1111 t•eUl U•• •Od perGO!!!n#l &1111..W.e 111 \1:1.ts •pM2Al 11.ol-G,. ~ 

~ ~U' ~ ... ~....n.;a\ 'f411 ~ $'.l!IC'l \O ~l"' WI·~.&,._ to- ~ :.- I ;-•1'~a• o.t M.aw ia .:•ft7'l~ •ft thG ~U.•• l!'K• _, the 

o euaiiUte• ciU.. t.u• et ac llAtcU.•t. i-..s.J.61 utan i1r t»• 

<:> d' i ........,. -.Z.6ot.a-. 1r ,,,........., to- ..- ...,....,u~t. R \h:anot, • U'ftl(I$~' k>-.olriq • adj~~ c£ t1111Q tw Ute M . JNli:Ole c.nl4 ...... 

: JAN 2 3 19!.d 

I 

~· I 

~ I 

I 

(,:, 

,.,,... 

lSQd.) HENRY L STIMSON 

... 

-

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")' 

....,-. 

.-.. 

·. 
. . 

-

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'\ I ... "" •; •_' '>. 

.;l.~ 

, • I 

.. 

-, 

-. 

. . 1 

- _j 

--3 

. - . 

"'! ,,_... .. ,;~:'~. 
REF ID:A67293 

&• !he Depal'taent hae not be@ able \o te.ko hll 

UMJtta1e ot the Jt0••1b111t1•s attor~d bJ' the ue of 017Pto• 

p&f>b!e •oh1nea. &uch •chines would peatlJ' enhance ornto ... O&pbJe tt'JIOUl'it7 u4 at 'the .._ ttae 1pee4 up the coamra.nteattou of tho ~:rtmen\ U erc>lo7ed an a Yid.er t1o&le. 

fa,. !be plqeic&l •eour1t7 ot \b.o State J)epv'-nt Oode 

C•*lteJ' ·~·· ahq•t•, ObviouelJt the 0«911ttee 414 not MA •o\d.4 aot tov•atig&te the »hn1oa.1 •eour1\J ot oodo roOll• 

b tbo esabaesiee 6 l•gatlon• and conaul.ate$ •broad. Bovever W~tion \en4ei-Ctd the Oom!.ttee tee.tJ to np:por\ the bel 1 et 

\bat iD. *""1' poeta ~•!oal ffCur1t: ta 1nadoquate .. 

it- the Oomtttee could not !nve•tipte th• •nne.,. 1P Yh!oh lrteral•text versiona ot ••oret O!" eont"14ent1al 

lfltlllligea &I"• pl'epare4 HpJ'Odv.aed, 4lats-1bute41 banclled6 84 

ttlocl v1t!d.o. ,. 41v1•1ou ud tnlb41na1ont ot the l'.>9partaont tt••lt,, nor flt tbo•• or tM laJ'S• ..i.aa1•• ...a lqat1on•. lut vhat c illv••~1rt1on ot •h• taota tu the•• •ttore v0\11.ct 41•o1oee -.no bit •tated but the t1ndJrta• ad.pti ba•e 

I» ~t.ant 1ntl'-no• ~n tM pa-obl• or 017Ptop&pb.10 ••ovltr ot the Dt,art.uut•• o-.w-.,tou aa • Yb.ol•. 

a. V.tthin the Departaent i'•elr a nlat1v:J ¥14• 41atrtbu.t1on ta 118.de Ot \be •exta ~ 9Mftt at2.d or e_ 14.entt.1 •••se•, tho OoP1•• b4tlng pl"oduced b7 tULOonboU•d llllleoa.raph 

prooee•. fb.e 00»1es are not H&1•teH4 nor aooounte4 t01J br 

the re11et•~ Xlll!b•re. 
REF ID:A67-293 

&· hoaua• or lil11te:t1ou .tri tb.9 eVH.Dt •2•1'1 

IP.le# no O&HM Ud\1&1 Hleotion ot the pe~•om.wl •••lCMd 

i;o en>'topaph!o 4ut1•• s.a \he oo4e l'OCDS, both .ta Vub1qton 04 1iJ. •tit10JUJ &b:ro&d 1• Poaaible. • .. MD tb9 oo.n1MI ot 

oc.petent )IQ'aonnel bo ntatned toi- the J.eDsth ot tlao neoo•l&l'J' 

t-or the \rf.1n..tn.a and apor1tnoo ot pel"aonn•1 reQ.u1H4 terr tu 

pr••--t1on ot aoour1t7 ot omauA.tca.t1a. 

til. !R~t 9f. l!fl~~J.IOllf!• 

~. f'he COAllitt•~ ~•cOD110n4ea 

t.• tba t the >u.'1n01Jl&l ate.pa or IJ1 1-.e.Ua to ~OllOdial 

ell&raet•~ 1.n41oated in 8oot1on %%? o:t Bnc1oaure B be taken 

'lltbou't C:.•1&7· 

i.· Tb&; p.-ov1e1on bo -.de tor tlle addit.tOJ:a&l •pace, fa.C)il1t1••• and pwacmnel rlQ.UUed tw the prap&i-a.tion ~ 

tor • •oh .o:re t.ffQ.1Mnt Hvie1on. repro4uot1on &Ad. 4l•tl-1but1on 

ot the •~JPtop&phio •1•t811b -.pl07ed bf the l>oP8.1"b&ent ot State. 

tn. l)ep&X"tmel'.\t •houl4 11thR b• ..- •holl7 ••1t-alltt1•1ont 1-

tb.i• Jto1P41ot,, oapabl• ot pe~t~ all neo••aur oPtrattOl'l• 

• a •uf'tioict17 a.S.qua.te ••1• to perait or tho ucea.u117 

tr.quent. •ba.n&•• lb tho -.te1'1al• .tnvolved, O'l' •l•• tbeae 

Dlt•l'iala P.oul.d be provided \bo t>eput..JM.u't bJ" aou otbR 

qua11f'ied. agen.07. 'iho Stat• ~~tnleht ebould -.ko w1d.9r •• 

ot Wldern ~tog:ttaphio •chin•• u4 •bould h&•• -.ehin.ea 

4e1d.gned •peoitioall7 tor 1t.e own uaago. Thaae ahould M 

4cvelope4 b;y ox- tor.th• D9pe.x-t1aent .. 

.I.• That JQ-ov1•1on be -4• toi- t.he eatabl1•1-ent. ot 

• reaaonab~7 1uge Or7ptograpb1c secU1'1t1 Group, •tatte4 vith 

ocm,petent an>ta.nalrt.io and •••ooi~tec olai1c&l Pff•omifl,, 'Whoa• 4u.ti•a ~o, &o exolusiv•l7 (1) to coriauct r-e1earoh an4 

•tudi,a, on• 0011t.1nuins an.4 ext.onsiYe ••1•,. on \be 0171>top&phlc •1•t•• uaed t.7 t.he t>ep&t"taent and ••pec1&UJ on the \horcr~as vith vb1cb. rqul.&tt• tO'l' \ho pope;r -10Jllent 

0: ~a• •ratemn are obae~v•dJ I) to eat&blieh aD4 to oOD.«uot 

Q>ao.1&1 t.M1D2Dg OOV••• tor ,. ptc>pet- ilwt.NO\icm u.4 ta4.ootrioa.Uon or tbe ooa oln-ke -.pl07ed b7 tl\e '.Dltputme.t, both e.t bQlle and. ab:roe.d. 

- ::s .,- - :; '- I --•ot- J --~ -.~·----~ • • "' ··"'.i"~"l':!i 
. 

1 

REF ID:A67293 

,4,(1) !'hat th• Aaaiatant 8ecurit7 Ot.t1ee o.t th9 

Department be de•1.gnated aa OrTPtogra.pbio Secur1tJ 

@!tioer ot the_Dept.rtmellt ot 8tateJ that he be IJl,aoed 1%1 chuge ot the Cl-Jl>tographto hou:r1t7 Group aent1oned 

SA •ubp&rqt'!oph 911.J and. that he be gtven a'1tt1oient 

authol"1t7 (1) to iheck all 1.noowing and outgoing ••Ml••• 

aa vell aa all pi-ocedlll'e• •••oc1&te4 therev1th, trm the 

point ot v1n ot 01'7Ptogra.pb10 •Mur1t7, and (2) to :report Violationa ~ crntogNpb1c ••curit7 to higher &UtbeJ!t1tJ tor 1.lmle41ate diac1pltnarJ' action. 

(2) That at .-oh poat abroad a oc:mdaaioned P~ip Service OtticeJt thereat be 4ee1gnated ae C17Pto· 

gM.phic 8ecui-1t7 Of't1ae:r or the Station,, 'tfho vould be 

tU)be'6ntl7 OD the lookout tor 1'1ola t1one ot CJ'J'Ptogr&pb.10 

•• vell aa o.t phJ'11eal aecur1t7 and 'lfho vould b&ve 

autbor1t7 to report euoh vtolat1ona through obalulel• to 

the crntograpb1c hour1t7 otr1aer or the Department or 

State in Waebtngton. 

!.• That the 8ecurit7 Otticer ot the Department o.r 

lt&te, 1Q)On the Jl'eCOllHD.cSatioris of' the CnPtographic Secu:ritJ' 

0ff1eer»take ~l:l-~eceBB&!7 mea,aurea to~ th.e enforcement Of 

the regulat1oo.e tor the -.utena.nce or cryptographto aeour1t7 

in & •nner that vlll either inaure contorm1.t7 thereto or 

•l•• oe.uae cUao1pl1n&:PJ' &ot1on to be taken, 1.nolutUng the 

1nt'l1ot1on ot ae•ere penalties, ror 1ntrnct1ons thereor. 

:_. That thei following recommendation& 9t the 19-\1 COJDmittee oe executed or carr1e4 !>1Jt to • g:reater degree than 

:ne.( a bithe~tq been tbe cases 7Jl(l)(d)J Tl>(3)J 7d(l)J 7t(l) and 

2)1 T&J Tll.ll) an4 ('). 9V. - - , - ~~~.tz;~ 

Arlington Ball Station 

14 Januar7 1~~ 

Dil'e~•ea.l'ab 

o oi- • ovn 

•Jar. 11gnal Corpa 

Captain, 

.. ~~ Signal Corps 

~#.~~ C.;t4111, i~. 
REF ID:A67293 

l. In accordance vith the request ot the Secre~ or 

!t&te (letter to the Secretal"J" ot Var, 2, Xovember l!)Ji.,), the 81gna.l 8ecur1tJ' .lgeno7 baa 1118.de a reaurve7 ot the Cl"J'Ptoar&phio a1atema and method.a ot cl&ea1t1ed coaunicat1on .... plo79d b7 the Department of' State. 

2. An original ocaa1tt•• oona1et1ng or .Mr. Villlam 7. 

hi.edman, Director or Comnwrdoat1ona Reaearoht Major Charles 

ll. ll1.aer,, and Captain J. o. lloak, all ot the 81.gD&l SeouritJ 

Ageno7, •• appainte4 b7 Colonel Corderman., Chiet o~ the BSA,, 

to conduct the reaui-ve7. !hie cClllld.ttee aet v1th Jlr. D. A. 

Salmon and Ill". l. x. Ooldaberr7 ot the State Department 18 

Wovaber 194:5. At thia •et1ng 1t vaa decided to appo1.Jlt a 

vorldng cOJllllittee to -.lee the actual report and dN.rt &117 ~•c••e&r7 rec0lml.8ndat1ona. 

'· At a oonferenoe held '° Jloveaber l,_., betveen Jlr. 

:rr1e<Sma.D., Major BrovnJ.~~ Captain Koak it •• decided tbat 

llaJor l\rovn, Capt.in .uouglaa, and Captain Koak vould ton. 

the vorJcing committee. 

• !he wwking committee called upon Jba. lalaon 1 ?>ecember 1943 and JD&de a atudJ' ot all or'Jl,\togr&phic .,..t8Jll8 eaplo7ed b7 the Deputaent. On December ' th9 comittee# v!th Jlr. 

Pri•dman- eall•d upon Dr. 0.1at. Chi•.t ot the D1V1a1on ot 

Com.uni.cations and R•oorde 1 and •4• ~nta to atudJ" the 

c17Ptogl'&ph10 prooedux-ea aplo7ed v1th1n the ~tme:it•a oodei-ocm. Tbe oomra1ttee vODke4 1n the oode roca 16 Dec•ber, and 

again 18 Deoaber ll'b.en it CCllllWl•~•d it• atud7. 

5. !be committee viahea to expreaa ita e.ppreo1at1on to 

Mr. l\&blon,. Dr. Ge1at, Kr. Ooldaberr7. Ill'. Ke7e1-,, Mr. Lawlor, and Mr. Parker and l*nJ' other -.bera ot the Dep&J!ltaent, a.11 

or Ybos wel'e moat helptul to tbe .-abet-• ot tbe oommittee 1n 

e&r%71D& out their &aaipllent. 

-1-
_- REF ID:A67293.:;:: - . . _ .... 

11. EDPD2~-· 

_-b.t_. ~ baaic •i'ateaa in- uae b7 the ri.partaent an olaae1-

t'iable aa f'ollov•• .. - .. . - -

_ (1) !br~e h1gb-gre.de ba•1o a7at-.a, ho iDYolYing th• ve o_t a11toaatlc olpher •ob1nea., Uld one 1nYolY1.Dg the uae of a band-opeated oipber device. Theae are 

aplo7•d tor ~ o~oati~ and are ~!I tollowas 

- {a) Oiph~ -Jf..ohine .C (v .• a. AnQ- Con•erter 

_: ~ ~-1'--A) J . 

(b) 

(o) 

Cipher kchtne MCA (u.a. •q JICJI, 

111.rk I• Abort 'f1tle OSP 1127JJ 

ltr!i Oiphera (U .a. AN;Y Cipher Devioe •-1~-A). _ 

_ -__ --(2) One 11ed1um-pad• bae1o •:r•tea ua1ng •.a•, tts• • 

and •o• oodea, ·~l'8ll01phered b7 aea.na ot oipber tabl••· 

fhoao cod.ea are emplo7ed tor COJPIDD!IAL o~o&t1ona. 

_ _ i'> Ozie low-pade baaio •1•t• uaing 9Jsrovn• ~ ~gi-•7 oode•~ unenciphe:Ped. 'fheae ood.e• are .apl07ed. t~ ft!S!lttO'l'lm oommUD.1c;&t1ona. 

b. The til>dinas ot the committee V1th regard to •oh 

or- th• a7atems aJ14 the p:rocedUl'e• relating to their uae are ••t tor\b 1_11 »&r&£Htpha 7 • 8. 91 and 10 belov. 

TA· Aa r•aarda the aeo:ret or hish·grade baa1o •1•t_.1 

(1) The Depa.Jttaent produces and 41atr1butea kq l1•ta and tabl•• ot d&117 aettiDga tor Ciphor Jlaohine KO. 

Opel'&ting &J1d ke71ng inatruotiona 1aaue4 b7 the Departaent 

uo baaed upon thoae Jtr•P&l'•d b7 the "1"111' ror uae with the O~veJ';•~ 11-~--A. .lt ;pres.mt Vuhington and London are 

th• onl7 holder• ot thia device. It 1• uae<l tor BCD1' 

tft.1"t'1a betveen tbe11e points. tlhe da117 trartio l•d 

avera.gea &bout 3000 to .-000 group• per da7. A aepua te ••t or :rotor• 1• ua•d tor the trart10 or agenci•• Yboee o~oationa mu.at pt.•• through the 8tate Departaent. A uev ••t ot J'Otor• 1• being prepared to replace preaent ate.te Dep&l'tme.nt J'Otora 1n the near tutU1"e. the 4-Tioo 

-2-
REF ID:A67293 

1• ~ted aooordiilg to inatruo\iona1 uo•pt that .... vffi ob••rv-4 Yhen1A tb4t operator ••:.L•ote4 ae a MY rotor 

&11.giment the rotor al.1gment appearing on the J10tor• at 

£he CQlllJ>1et1on Of & prev10\10 ••e&ge OZ. p&l't or & ........ - - - - - -

. __ (2} _!be D9~nt produce• anCl 41•tr1butea hJ 

·ll•ta and. t&bl•• ot da11J aetttnaa trn- Cipb«ri -.Chine XCA. 

Operatμ,g and ke)'ing .1.Datruot1cma ba•ed upon thoae p:re- pared b7 the Jfa.'VJ' ve 1eaued to all bold.er• ot the device. 

!'here ue 10 bolder• of th1• ctev1oe Wtd• •ino• all hold 

tbe ..uae •1•t•. Y8J't1aal and l&tenl OCIDll'Ullio&UOD 1• 

po1aible. !be device 1• uaed ~~ BECH!! tM.ttic ODl7 

&J'ld th& tl'Att1o load l'\Ul8 troa )000 to io .. ooo groupe per dl.7. 1.l'be d.ev1o• 1• opeated 1n accoi-C!a.nce with 1.Dat:PUCtiOl'UI• 

uoept that bo.na tide vorda 1.Datoad or M.D4om poupa o~ 

letter• are ••l•oted tor the 101.tial alSgnment. hequent11,, tor •••sea or aoveral pa:-ta, the ••~ 1ndf.oe.to:ra are 

•eleo;ed hca OOlllPl•te sentence• •uob a• "lla.rr bad a little 

l.Mb. fileae an divided into 5 letter groups and uaed 

1Q order, &a 1ndioa.tors. 'lhe 1D41catora are eno1phered 

and do not appear 1D the •••se 1n c~ea.r. 

(') !'he rotor••••bl7 tabl•e and DJ" 11•t• ror 

both or the tox-egoing -.chine •r•tema e• nov produced 

&Jld. 1••ue4 on a J11&1'17 ba•i•- that 1•., Vblle aeparate c1pher a7• are_pov14ed t0%' ee.oh da.7 or the J'Ml"• the 

entil'e l1et or '65 ke7a 1• prepax-ed and 1•aued 1n a ·~· document. Tb!• pracUoe 1• not &e Mf'•1 fl'Oll the •ta.n4po1nt or plqaioal Nour1t7 .. u prep&J11Dg and l••ulng ke7 lists on a MPtBlx bas1a. 

(") !be mmr.ber or •tations equipped v1tb b1gb.- pade ~1pher ~chine• 1• Nl&t1v•b ..all and S.t 1• telt 

that the Dep&l'tlllent 1• not tak1Dg tul.l advantage or the 

.xcellent poaa1b111t1•• atrCXl'ded bJ' the wae o~ 1r.10h 

Mohinea .. 'Vbiob could peatl7 enballoe the ••ouritJ and 

•'PMCl ot the Depart.aent 1a Cammunie&tiona. •reover,, & 

•oh1l'le 4••1.gn•d •P9o1t1oallJ' tor 1ta ue voul.4 be advi .. bl• 

but $hua tar th• J:>epartaent re11e• upon the Arz17 &nd the 

kVJ' tor auoh •chines .. 

}!. Aa regard• Cipher Device M-1'8-A,. the •t.r1p- c1phei- a79"E"eu 1 

(1) !'he ke;r liata and inatruotiona taJt use v1tb 

•b1p oipbftia ve produced a.nd 41at:r1buted. bJ' the Depe.i-t- Mnt. 1".b.e 111xe4 aequeneee tt:a' the alp~bet atr1pa ue 

. ~~· .. 

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REF ID:A67293 r r-

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-- - -- . ___ ()) Vba.t baa b9en atat•d undtr t.(}) abo'ff aa 

liii,ir!# pep&>:t&tion and. iaaue ot DJ'• toza the •ohineaipher •71taa 1• •fl\11.llJ' applioable to the ab1p-o1phe~ 

•r•tema. · 

.l• the oa.tttee d.eeae the tbff• above-aentioned 

h1p•p-&4e -..1c •J'•tas to be technioal.17 acnm4. U poperlJ' 'Q.9ed theJ ooul.4 71•14 th• reQ.ui•i'• 4-sre- of ••ourit7 t~ 

th• aeoret o~~1•t1on• ot the l>eputtae.nt. Bov•••r cet-tain 

tault7 4eta11• in •thoda and pooe4ur•• •••oolated. w!th th.ea• •1•i•a• •• AOted &bOYe, •houl.4 be ooneo\ed. 

8. The aed1\11l•p&4• •1•t .... 

A.• tbffe baaie aode book• a.H ue4J •.1. "t "a •L &l'ld 

•o•, publiih•4 in 1919, 1122. and 1927. Hapeot.ift 7. rbe 

oodea &r• ot tYO•p&rt oon1truotion, oapo•ed of oode povpa vith onl.1 a ene-1etter 41.:tteJ'en.o•. The code• haw been u 

e:rteot ataoe •ho:rtl7 atter pub11oe.t1on. frJ.w to lulJ' 19'2 

...... 

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REF ID :A67291.-

~/E$f!Bf7f 'h• oode• w:r• •otpbned b7 .... tte ot dip&phio table•. lin.oe ~t ,. Mn.o£N.pble t&bl•• ocapo••d ot 10 papa er 20 alpba• tMJta .Ptt page Daft been Wied. _ - , - - ~-=- • - .!. - -,,_ - _-,_ - • - • "'- - • f k• Vh11• l.Utl'uoUo.u tw- the ue ot 'th••• t&blea 

fttl\l.lre tb&t AOt llOrO than '' poupa be •no1~d • the = .=t:&.fUC'~t=•:.:-ur:. t= tc. ~=-thf:J!:rC:. 

k wiphered cm17 in the 1aet poatt1on ot ti. page. Al!:! lt 

•• tounc.\ t.b&t ~ baeto boob 1n thi• •1•tea eontatned "I 

$0 etpbtw 1n41oaton •oht a11ew.tng tuut~o!ent -..1ante • 

.I.• lb• o~ \'tee h•l• •t in •in ot thf!d.r long 

uap tbe li&•io eodee (A, •. ancl C) net be •ona14ned d•-

J:Q'Old.attd IUl4 that the U"J'Pt0papbio •7•t• tor npennolpb.e1.ng ••~oa ill tho•• ood.e• do•• no\ J1,el.4 ad.equ&t• ffOmt1t.J' tO'I' 

• •olum.nowt ZNaber ot •Ohfident1&1 ••11&8••· 

g. A.a re~ the low-gr.ad• baeio •7•teas. tn. llROW'R 

•nd Wl' ood.e• ve tvo•pUt co4e•1.BROWlf ha• been ill o1'teot •irlc• 19'8 and_ ~Y ~J.nce 1jl.8. ~~ J~ poa1t1'fe nideno• 

•o in4ioat• t&i.t both ot '119•• csode• have been ·~••4 

and tbat t.b• .Axt• Pov•i-• Sft Men deri•i.ls8 uetu3.- int•111- ~· fJl'Oll the ""-~ Of aeaMgea in \he•e M4ea.. !be GOil• 

Id.it• oonfJ!der• that .... oodea an Mt adeQ.ua.t. t01' uo 

1n vu-tt.e nc tOJ' s-••tltiated be.t.t10. 

10. %nve•t1Pt1on Y1th napec\ to aen-:ral poUoJ' an4 

prooedul-•• :revoale4 tho to11ow1Dga 

&.· 11\bouah the nooaun4at1on• 14 \he 11.ar9'8'J Ccaldtt•• ot l'~l ha." lieen to11ove4 to a oone1~b1• t.gree,, oerU.in bfpe:tPt.a.nt -.aur.• :reoomnen4ed. b7 tba~ COllld.t•ee 

have not •• 79t been e&l'l'ied out to the Mp•• neoeeMJ7 to 

&OCOllPli•h the 4-•ired reau1-ta an.4 oertain othei- -.asurea ha•• not bean in•titut.ed at ail .- to onlJ' a ~t1&1 de~. Xn th• latter tvq ?W.S91'1•• ue the tollovtna {••• kb B) t ~pba TJ!.(1) (4J 1 T!.l') J TJ.(1) J Tt(l) &D4 (I} J T.IJ T)lfl) &nd (,). 

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REF ID:A61293 

•tertali vork *4teta, -.rbon papa. •'o., no &49qu&te 

·~· on ta ael"Ot•ed bJ oode NOil peraoian•l to lllaur• that &11 do,,....nta &ff aotua.111' bmtned a.n4 t.bat the bmsn1ng 1• ooa-

»i•t•. 

I. lb. •nJt\e• oou.1.4 aot laftftillate t.i. pbp1oal 11our1u fiY oOde ffOll8 1a th• t1•14 but a ltate ~i-t:aent 

ffff08'.ltati'ff •ta\ed ti.t J:lia 1D.Teattgat1ona tza. 19'1 1.n lou.th ~lo& N't'Mled tmt ph'pieal aeourl't7 ocmdlt1one ...,.. veH 

.. M"M117 lax. Other 1ntonoat1on ••1lAbl• to \he emmtttee 

lndtoat•• that 1Jl -.DJ' poeta pbJe1cal HC>UP1t7 1• tna4equate. 

j,. A.a ~· the ••1•otton1_ inY••ttaa\ion., fl\llll.1• t1oatiou, U4 t'N1n1ng pt peraomi.el. u. eOMd.ttee •• Sa ... :foxaae4 \blr.t DO &ttinite lt&nd&MB hlff been Mt &a4 t'ollove4 

br the J'Jep&rtment 1D ••leotlng pnraonnel tor the oo4• l'008l &b4 

that Ml&r1•• ud .attnga •• ta ._. lut.anoe• too low '° 

attract •P*bl• &Jtd trua\vorthr pnt•onnel. J' vu noted ii.t 

the Chier et \he D1•J.alcm 1• •ld.1'8 .rrorta to illproM: tbl• 

•S.tat!on. Ae Hg&rda o~toS"pbiO pa•onn•l .t.n f'oretp •tatione,, th ... ba•• ~en wtanoe• vhor• aelecr'tion &!ld •a•tp- ..,.t to code dU.tl•• 'b&a not been Pl"'*O•ded "1 ~ t.nv•atl• 

aation •• '° l07<7 an4 lntegrit7 • 

.It• 2tie •om.itt.e aote4 ht the • .._1t7 el.a••1t1• 

1&\ion ot 'th.a .i-a-tat vei-a1cm9 or •••se• 414 not app11r eonaptouov.•17 an i;he :page• ~ th••• •••se•. although • •ta.Ped ~ t:taat tM ••Mse su.at be p&Npbraaed. u ,. •• ..i 

n to a non•gO'f'ttl'nllGntal ageno7 appear• on ~ •••P• A 

Qllbol f.nd1oa.tlag th• be.ale •'J•t• tn. 'tdlleh Ut• ••MP •• 

COlpheHd app-.i-a Oil th• plaln·tex• veaton.. ft!• S.a a tault7 

PROtioe. 

t• Li teal plain-t.xt v••10l'Ul or oJA••ltied. e4 

\ID.N&!at$1904 •••se• •l'• repro4uced. bJ' uncontrolled. •S•oIJM.Phins and are 11 ven a tabl7 vtde t11•tr1but1on vt thin tb.e 

J>ttpartaent. the•• oop1•• are anappowed to be Nt'lll"ned to the 

DOit bd u. not accounted tor by HSl•tel' iw.bn and the 41•• 

poa1t1a ot oopt•• :ta not oonuolled .. 

&• A at\147 et tr&ftia bf the eomtitttoe and. oora-obora\iff atat•ent• b7 tho old.et eod• otnk lnd1o&te tbait 

•teffotJPlO begi-.S.ng• and Gdinga ue prevalent. lalo •ktlona 

A.ow 1nd1•1dual in1ti&t.1.e b7 lrm'71rl8 the oluaitioe.Um and 

atldd.a•• SA She bodf ~ the •••P• It•• &lao tOU'Dd \bat la ~ .tmtanoe1 entiH JIUe.pe.pba ~ ••M£9•.t and in. a<ne •••• 

&2.llO•t. tM ct1H •••S•• wwe ti.Hot 'uotat1one ot letter•• 

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kc - . -~ ... ' 

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REF ID:A67293 

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ot a MVtl'1tJ .uttio1en.°' to iutlll • hu et Hna9Queno•• t~ tu•ve Hp4JUtton ot rtol&ttou. 

ZlX, llalll!Jl!!J9Jll. _ _ _ .. 

U~ L: ~ to obtaia ~ jasbma IA _,jl.opaplde HOV1\J for the lleputaent ot lta~tth• oOllid.tt" nt.1\1 ill ;puagN.pha 1'!JP!1\ aac1 15 MOomenoati.ona °' a Q801flo at.\rre r .. ea.oh ot 119'9.a. ID puagn.ph 16 S.t nta.tta 

No"91en4t.t1ona a .--a1 .,_.... 

1'· .. ommellda,lou "8U'41ns •obi• •7•'-• 

&• lot.or •••fllbl7 tab1•• &114 u•U....• Qou.14 be t•weO. on a. aontbl.J' bU1a. 

Jt. lt&rldar4t au.\horia..t Su\l'\10Uou 1•..wtd bJ' the S:..puitaenT •bo\11.d. be roUond. at au U.a 1a tho .. 1eo\1on o~ "'• augment• • 

.I.• A 1'&114ma oboio• ot 1.Jlt.«rnal b41oat0l'a ahoulcl 

be -.de bj tho epnatore. 

,4. Por etat.tor&a prorlded. vtth oipher -.ohine• ~to U7 li•t• ahw14 be prod.d.ed tor Ute •= of' '"'1't1o et an three oawaor1•• or •• _.., to te the bl.D41~ et COIPX'.DBHUL w IUUlcnD •• ...,.. •• veu •• 

Ucmft. 1-. lffOllD9nd&tiona .-.ucttna at.rip SJl\ema I 

A.• Ul awu •J•tea 9bo'a14 be oon,_ted \o oJtNme1 

ell•h•t.lon. l\ 1• ader•iood \ha\ tibia S.• Ming done aa e.apedit1ows17 .., poea1ble. I 

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REF ID :-A67 2,93, 

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REF ID:A67293 -~ -~ 

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