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BRtJsAf· COJ.ml$C CONFEHEflCE . : :"r • .:.··~· 

·SECOND MEETING CF THE U o Su PLENARY C<J.nllTTEE 

12_ September 1950 

Present 1 Encloau.re Ao 

lo A meeting. ot the Uo S<) Representation tor the Il?USA COOEC 

CONFRNCR was held in the NCS Lounge at 14001 12 september 19500 

2o Admiral Stone explained that the purpose of the m.eet:lng was 

to acquaint all or the personnel who llill be imrol ved in the forthcoming US ... UK discussions with _the ager.d,a, and with the limitati,ons 

on t_he diacussions; and ~rticularly to give them an opportunity to 

ask questions so that everybody will know just. what may or may not be 

discussed!) He stated that rruch or the discussion will. necessarily be 

TOP SECRET; that allot it is highly claesif_ied, and that there mu.et 

be no inadvertent. disclosures by unnecessary talk with the visiting 

British representatives outside ot the conference sessionso He stated 

that files of the basic papers,, which established the conference constitute the JCS 2074 series,. will be available for reference by Uo So 

representativeso 

3o ·Admiral Stone stated that the conference has .tm purposes: 

.!o Bub-Committee A will deal with the· matter of a replacement tor the Combined Cipher 1.!achineo 'l'he Joint Chiefs or staff' . . 

· have indicated that the Uo So will otter the 7-rotor BCI! to the 

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British as a replacement tor the Combined Cipher Machineo When it becomes 

available, the. Uo So will otter to the British the 7-rotor PCM which is a 

lightweight version of the 7-rotor BCMo Discussion of replacement for the 

·CCII must be limited to these two . .machines-=the 7-rotor BC!' and the 7 ... rotor 

PCMo 

J!a SU'bc=COJlllllittee B will take c~ of the.other part. ot the .con-· 

ference, which is an exploratory conferenee, to exchange information with 

the British on a reciprocal·baais concerning Uo·So developnents in the 

cryptographic tield which the JCS have· approved for disclosureo The 

models and drawings that may be disclosed to the 'British have been 

officially approved b7 the Joint Chiefs or Staff and are specifically 

list.ed on U. So EYES ONLY papers fumished ·the Uo So representatives .... 

4o Admiral Stone stressed that at the exploratory conference no 

ap~ements will be reached, and that no cOmmitmen.ts will be madeo He 

requested that discussion of the various Uo S" machines be limited to 

the purposes tor which they are being developedo Developments to be dis~ 

cussed come under the following categories: 

&o Special purpose teleprinter systems for the exchange of - . 

intelligence materialc ' 

J:!o Low echelon (minor war vessels) telegraphic systems~ 

Co Merchant ship telegraphic sy&temso -

do Meteorological security systems, including facsimile, .... 

teleprinter and telegraph.o 

eo Voice security syst,ems for tactical. purposes<) .. 

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5o J.rr. Fried.man raised ·a question with respect to the second cate= 

gory• Low echelon (minor WIμ" vessels) telegraphic syetemso Specifically, 

he desired to know whether the item was limited to Maval systems or 

whether it was intended to include auch ·1tems as assault codes, coinbat. 

codes, and similar items for ground torce operations. Colonel Colli.ns 

canmented that 1 t was intended to include low echelon systems in general 

rather than being limited to Naval problemso Admiral stone agreed .that 

the broad.er interpretation was intended, which fact was boJ,'00 out by the 

specU'ic l1st.1ng ot various equipments and items in that category • 

. 6. llri;i Barlow qu~stioned the ASAY 9 being. listed tor discussion 

under Working Group Noo 4o After some discussion it was agreed that 

permission would be requested from AFSAC to add the ASAY 6 to the listo 

It would not be necessary to ask AFSAC to remove the A~AY 9 from the 

list, but it would not be disclosed unless and until authorized. by 

DIRAFSAo Demonstration and discussion or the ASAY 6 will be added to . ' 

Working Groups No., 3 and 4o Mro Small SU&.rested that the correct AFSA 

nomenclature tor the ASAY 6 be used in lieu ot ASA nomenclaturec There 

was no objection,. (Correct AFSA nomenclature is AFSAY-8060) ~ . . ? o Major Parr asked for Air Force · represen~ation on Working Group 

Noo 4 and his request was granted o 

Bo Captain Sati'ord recommerded that an item on One.;,.Time Tape 

Scl"&l!lblera·, including key production equiprient 9 be included for discussion and recommended the establishment. of \forking Group Noo 5 to con= 

sid•r ito Admiral stone suggested that, it necessary, more people ha 

added to the present. working groups to consider the item and that. it 

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be considered tentatively by Working Group Noo lo The item is to be 

referred to AFSAC tor approval as an additional item which may be dieclosedo 

9o Coanander Hargreaves requested permi~on to· include discusaion ot the ·Pell also under Working Group Noo 2 o Captain Hansen and 

Colonel Collins agreed that such discussion was in ordero Admiral 

st.one approvedo 

lOci Admiral Stone stated that the first (plenary) meeting o! the 

conference would be held on or about 20 September,* that the opening 

remarks will be made by Major General McClelland and himself., Desig= 

nation of the Conference Chairman. Committee and Su~ommittee Chair.... 

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men will be made, and general instructions will be given to the 

Committees aild Su\>...Committeeso The first plenary session will be 

tollOlled by a meeting ·or the Executive Committeeo 

- llo Admiral stone state~ that· under no conditions would the British 

be given reg~stered public•tions by AFSAo Nothing in written form is to 

be pasaad to the British excei>t through D;r.RAFSA 9 s off'ice where it will 

be accounted tor and will be passed formally to the head of the British 

delegationc. 

120 Jlro Friedman suggested that it would be desirable· to have an 

agreement with the British stating that they will confom strictly to 

the conditions set rort.h in the basic JCS papero · Points to be covered 

in the proposed agreement include: 

*NOl'E .... tater set tor 1430, 21 Sept.ember 19501·) 

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.aa Request for info~tion from a third partyo -

ba Securit;r ot intormationo -

c.. Intomation nc:)t be used tor ot-her than milit.aey purposeso 

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·do Protection of individual patent rightsa - lJo llro Shaw raised the quest.ion as to the AFSAM 7 being discussed 

as the replacement for the CClCo He considered it quite possible that 

the British might propose the AFSAJI 7 as a substitute tor the CCUo 

Admiral. Stone stated that. such a possibility had been call.ad to his 

attentiona· He stated that it would not be discussed as a replacement 

tor the CCI since there was no JCS authority tor such discussion.., 

DIRAFSA pointed out that this matter had also been discussed, and a 

decision reached, by the Amed Forces Security Agency Council. The 

replacement. for the CCJ! is to be discussed only on the basis of the 

7-rotor BCM and the PCMo 

.14o Amiral Stone sta~ that there was one matter that he would 

like to be sure that everybody .understoodo There is not to be any dis..; 

cussion ot the F..CJI principles. or their applicationc and no disclosures 

in any form ot the ECll/SIGABAo .. This limitation is to apply to the basic 

machine and to modifications such as the CSP 29000 ~he ECM ia absolutely 

"out or the picture" so tar aa this conference is concerned. 

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150 Mro Friedman raised a question regarding the o~rational and 

research and developnent asi>scts of tho conf'erenceo He pointed out 

that the conference started out to be an explorator,y conferenca on 

research and development matters and that the operational. aspects of 

these equipmema, their method and manner ot distribuM-011 would not be 

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undertaken tor diamssiono Re further noted that 1n the Appendix to the 

Agenda ror the Conterence, approved by AFSAC, and which had been handed 

to the Britiah, there an ·1t•s dealing with desirable characteristics 

in_ general and the levels or emplo1'19nto Hro Friedman questioned the 

ability or the committee to restrict their disausslons to the research 

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and devalopnent aspactso Admiral Stone stated that the outline referred 

to Bhould be very helpi'ul in uploring all _items to give us ideas,; . 

Admiral stone stated while resea1"Ch an~ development was to be the basis 

tor disclosures, that the equipnents could be discussed in any inanner 

desired, except. that auch diecuesions should not lead up to any commitments or agreement.a-nor in such a marmer as to give the· British any 

f'alae ''hopeso 

l.6a Captain Saf'tord commented that it was his intention to demonstrate the Halt-Ja>O (CSP 5100) to the Rritish at the same time that the 

other e9uipments are demonst.rated and wanted to make certain that his 

intentions were understood and" approveda After some discussion it was 

agreed by all concerned that there were no objections to such demonstration provided that the Ua So was not committed. to its use and with the 

Ullderatand1ng that it used, it would not necessarily be used at all 

17 a Commander Seiler suggested that a desk be. set up where all conference papers could be· cleared and requests tor intorrnation c0ordinateda 

Admiral Stone requested that V.ra Friedman work out the suggestiono 

18.o 'liro Friedman stated that meetings of the Working GJ'Oups will be 

held on the third deck of Bu~lding 170 He suggested that eac~ or the 

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Workins Oroupa appoint a recorder· who will be responsible !or keeping 

aumaey llllnutea· and forwarding theJa to the Executive Ccmmitteeo · 

19~ 11rn Friedman requested that :the Chaiman ot the Committees and 

Su~ommitteea get together with thfll.r Vlor~ng Groups after the .meetingo 

The meeting adjourned at 1.5150 

RUSSELL Ho HCJlTON . Lt Colonel, Sig C 

APPROVED: For and in· the absence of the secretariat 

Z.:uP ~. -=:s~ EARL Eo STORE 

Rear Admi~al.~ Uo So R&'YJ' · 

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