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Minutes of an acl hoc comittee a! tm BBUSA COISEC COlWDBCE to diaousu 

and arrtn at a deo1e1on resard1ng tlla 41eclosUl'G of tbe ~l'JPtograPhi.a 

pr1na1p1ee ~m"bod1ed in the .AJ'SAM.:.7( \\.eQ! c-w ?..o ~ ~-OJ 

Present• 

Aamtral Stone 

General Cillmon C~l CG:'Utms 

Colonel Ljnn 

Ca:pt81n lfarper 0 

Ml'. Fr1e4mn 

Colonel Beare 

Dr. Silmnr 

Mr. SDBl1 

Mr. JJatte;v 

Lt. Colonel Lardin 

Lt~ Colonel Borton 

1. Admiral Stone opened the meeting b7 stat-1ng that oerta1n pein·ta 

had been raised with regard to the adv1eab111t7:or wisdom of disclosing 

tba principles of the AFSAM-7 to tlla British dui-ing the present oonference '.", .· and. asked tbat Mr. Jr1ec:1ma.n brieflJ' re'f1ew t~ J,Datter for tbs benefit of 

those present. 

2. Mr. ·Frieubllan refemd t~ tb9 JCS 207li. .aeries 'as the basis for th& 

BRlJSA C~EC· ,COIFEREICE and explained the two purpoees of tha oonfere.noe, 

which ~ (a}' to di'ecusa, demonstrate, ·and u· practicable to agree upon 

the .~YEPD•l'otor BCM or the PCM aa tbs replaceant for·tm present OCM and 

(b)'~ 11•itecl exc~ of cr,yptosraphic principles. Ae e. result· .of. the 

second n;u1rement ·the Joint Chiefs of Staff. aD4 A'fSAO :bad bcDen requested 

to auth0r1ze a number of equipmnts, amons which an included ths AFSAM-7 

and AlPSAM-9. The E.mcut1ve C:onBittee of tm' confereriee had met during 

the afternoon of 22 September to diacuas the · adv1mab11it;v of disoloming 

the principles of the AFS.AM-7, since the ~d for disclosure. ws not 

apparent at . this tia I and that tbe7 bad umnimoUE!lJ' .agl'80d to l"fJQQ'llimDd 

that tm deTice ·not be t!emonatrated at this time. This ncommendation had 

been ref'a:rted to Admiral Stone, who bad ref!ueoted this conference for the 

purpose r4 further discussing the problem with repreeente:tivee ftom the ~.· . . 

3. Ac!miral Stone indicS:ted that he wished to be guided b;y the 

Ar1IfS recommD.dationa in the matter. since the AFSAM-7 end .AFSAM-9 were 

primar117 Arife developments. Re further stated that in 8.D7 event I AFSA 

f1lll7 intended to P\lBh the development of t:tls AFSAM-7 to its conclusion . 

and that tha. ArrfII "t-rould not ba dapr1ved of the uee of tm machine, ragard-

·leaa af what decision wae reached with regard to 1te disclosure to tbe 

~1tish. · 

Is.. Mr. Small stated that the Al'!V Security Al/!}9noy d1cl not ask fer 

the d1soloa1119 ot the Al"SAM· 7 but did comur in i te disetloaUI·c. -lb furthar 

stat.e4 that the .AFSM-7 Aid not passess u:r aecv1ty features ~br.t w;sra not 

requ1~d for tbs.purpose for which intendadft 

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Declassified and approved for release by NSA on 05-29-2014 pursuantto E.O. 1352a 
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A REF ID:A67271 . 

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5. Question waa raised aa to the implications of the capture of 

the maoh1m. Ml". Sall -nplittd that th& ·Arrr13 Seourit7 Ase=1 wae not 

worried onr the prospect of ita capture; that tba7 aaswmid tb&.t in a.c'tual 

operations tt would be· captured or compromised and that it lfOUlcl ·not ' 

a4ver•lJ" effect. tbe aecuri tJ' of U • 8. communioat1ona for BOE tims • 

6. Colof»l Lardin pointed out that the British :Brigade Preeently 

opara:ting in Korea dicl not have a machine for commm.itcation with U. s .. P'oreea and that m felt the nae4 for.~such a &eviee ae the AFSAM.-7 WR& 

urgantl.7 re~uired for that p~rpoae. . . 

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0 7. Mr. »atte1 stated that in combined met1l>ge of Subcommittee A 

tm. British he.ct 1nd1cated their ·desire for a 32-point or 36-P.'int rotor 

DBohim ·with a S1Dgle cryptographic princi·ple for both OD .and of'f-1.ina 

application. 

8~ Admiral Stom reoalllsd ·the .AFSAC decision that the .AFSAM-7 

va& not to be consia&red as the replacemant for the CCM. Tl"..e .AFSAM-'T · 

va~ developed more E!fl. a re.placenmnt for the M-2G9 • low e~helon use . 

in the ArTf13 and· Air .rorce •. 

9. ME': Small stated that it was the desire ot ASA to di~ouee the 

.AFSAM-7 vitl:i tJae British as a oombill!8d machine for lou level - below 

41Yia1on level. · · · 

.10. Mr. Frie&asm illf1U1red as to wbet!\r:Dr· or not tho Arra:! coneidered 

tbs :PCM of sufficient strength to satiety the Arf1l3 needs tor a machine 

below 41T1a1on level~ Mr. Small indicated that in his opinion the PoM ~e below the- etandard---4"'a1rad by the A:nq and would not be used. for that . . . 

purpose. 

11 ~ . Mr. Fr1edmBn CO?m'ISnted upon the_ great loss to the OOMINT :f'ialcl 

.. ho~ld tbs AFSAM-7.. be captured and used against us. 

12. itir. S:J.nkov pointed O\tt that all E!UCh machines would be.vs 

approximatel.J' the &a.l!El effect upon tha OOMINT field and did not h11eve 

that it was a ve.i1a. argum~ or :um.te.tion to be placed oDJs u.po.'1 ilia 

Al'SAM-·7 • . . 

131 Admiral Stone stated that ha was in a. difficult position w:hen 

it came to evaluating t!W mrits cf' COMimT 11hen :its interests com'l1cts 

with the tlo ·s·. ·needs for ae<aure co!!D'l'J.Ulicationeo ~ further stated that . 

• ha.cl mvertheJ,ess concluded that t!W aecutv of gur 01.'D c0mmun1oations 

must ba e~idet~d ~e paramo'!3nt and that Ali'S4 P.>l1cy· iras guided acc6r4ingly. 

· ia.. Mr o BEU reoommended that General Gillmore refer the .. prob JI.em 

to ACbairal Stol.ia for deoiaion. 

15. Cemral Gillmore indicated that tbs susseetion that ~ ./;FSAM-7 

be "'Placed on the ehelf" 1of-t +.'.he Al'm!I 1fith ·no~hins for use :ln low· echel"ODS. 

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16. Admiral Stone 1nfomed General Gil.l.mpr~ that. ha would not 

adv.ocate p11tttns AFSAM-7 "on the ·shelf;' and that 'the ArJlf3 did not laaTe 

to dieolose the mchina to the Br1t1eh 1n order to assve the use of tbe maahi~ in the U. S. Ar1lf3 • in an7 echelon to be agreed a:Pon. ' . 

· 17. Coloml Lardin pointed out that it waa the deeil'e of the A"'6 to 

UB8 oDl7 one machme in.all oahalcne from the Corps dew and that it had 

'been ~ir hoJ;le tbat the ltr1\1eh wo\ll.4 be abla to do the same. · 

18. ColoneJ. ~ ves zetaueated ~ ~x:Preas th9 view of tbs Ai:r ;trorcf'. 

with reset to tbl Al'BAM·7 • Colonel J'1DD etatetl that. bB ,.,aa· not prepared 

to preaent the· A,11' rorce p01nt ct vtr"li at this tim. 'Rhe Air Force was 

mre interemtacl in tu .Q"SAM-9 then 1n the asAM-7, but were cl&f1n1tely 

interested. in both etu1pments - primsrU, beeauu it would aimplif7 the 

crntoeraph1a ef!u~I&nt problem b7 supplJriilg one·· of£ •1.im · and om on~11m 

teletne equipment. · 

19.'- Acimiral Stons stat94 that he vould be guided b7 recommlidatiom 

from the Arrq and asked General G111Jilore if he wo1.1ld ca.."'S to make a 

docision at this time or tab a fev dqll to firm up the_ AY!fqf positiono . . . . 

20. Aftsr fUrtl;ler diecuseion General GU;J.more stated -that tbs Army 

~curl t7 Ageno7 was w1ll11J8 to d1scloee th& ~VSAM-7 al! an Anr3 dovelopmant. to eatiat1 a med within the Uo s. tactical forooa• . ;Dr. SinkOT and 

Mr. '.Batte7 ~n reqmetad to U'at1 up a paper that wc;>Uld ·serve as· a basis 

tor· cUaouaaing ~- equipnent vith tm Br1\imh. Q0m>rall7, it was agreed 

tbat: 

a. T11B -.oh1m, was not to be considered avail.able :to.!"" uomb1Dad 

U.S., -U .JC. llBC!t • . 

b. TM level of d1str1bu~1on within u,s. Services was no~· ~-'JOt 

determinedo 

· c. It ie intended to :reserve this maoh:im tor u. S. use only. 

21.. Adm!ral St0116. stated that · 41.scusaion and demonstration ot the 

AFSAM-9hac:1 been approved for O.i&closure at hie diacretion and that-it 

vaa hie intention to approve such disclosure ~ince the AFSAM-7 principles 

were. embodied: in tl10 1.Fs~-9. After. con."'Jidszi:able disaueaion ·of the matter 

it was agreed that either m1ther. of these machines should be clieoloeed 

or else· bo.th. ~ them should be disclosed - ·an ·

11all or nothir>g11 propos1 tion 

wae i?Jvolvsd. It was then agreed that ·both lti:>uld be d1scloe4'd tjo tho 

lk'1t1ah. · · 

22. · Coloml ~ raised th0 question of d1eclosi:ug the. '\lSA'l-ao6e 

Since he bad ·originally propos-sd the diaolosure of the device and had 

aince tbat tim reconsidered hie recommendation he now desired tl"'.at 

the AFSAY-806 not be d1sous.sed. All present agreed. 

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23~ All present agreed upon diealoaure and discussion of om .. time · tape generatj,Dg equipment during the conference w_ith the :Britisho 

EARL E.. STOIE · 

Rear Admi1"al.11 u. a •. Nav 

·r:~w~ RUSSEL Ho JIORTON . 

Lt. Colonel, Signal Corps 

tc $c ~-wrf~ ~~iW­

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