REF ID:A517799 

TOP SECRET CA?TOE 

~-Q:3.3(h) (2) 

p,~:·;:~.6?36/50 USC 3605 I 

Q!m!.1: 

. ·. . ·.··. .1 arriVed. e.t, Paris a.t 6 P••• cm Pebrua17 16th and had dinner 

\ \ld.tb Colonelf 1 the ·Nlll9 .. ~ n Onr dinner ve had ecme intormal ·. · .. ~acmalGD. o'r a 'iide l"lng• ot topice. But morning I went to the 

'· ·. UQ ··f# the 5\'~ lib ere I diacusa e 1etminh probleas, and cm the same 

· &tt .... om:i I .. !nri.ted to meet a reaearoh cl"J'Ptanal,yst and discuaa 

1 .C:t:::i1 ········· .... 1ana.~:i!:>~.~;eh: !ti;ar:.~~unr;o: :ini:r ~ec••icn msecurit1and diss.tnation. 

~~l~ ;~~ diecuaicme m tli•l=~cn ~lem m 

thel.7tb am 18th Feb wit head ot the intercept 

Who is CCIOCerned 1111.th .,__..,,....-.....-...--,....-r:--.....----',....----.-......-.....,..--------...,was able to obtain 

the results or his 

5. The samol;e reterred. t.o abon was sterilised '13" removal ot all 

I . . \. \ \. ········ \nunbers. This rather 

laborioua \task vaa undertaken ill ord.- to c~ strictq with the 

rules laid\ dawn in AppencH x P toj \.JAgreement • 

6. A\ eimplffied\Texta with ad hoc 11otatian bad been sent with the 

sample; thia inc1uded CQ]¥ call aip.s and trequemci98 used ca each link 

tor 11hich trattic WM JJ"9Sent in the s811pl.e.., 

7.. • Th.ell.. \aentau- ror the '''\oion ... the ming ot. P'ebru&r7 i7thier91 \ \ .. I bead ot the Cr,ypt and Reporting deparbalm4 I 

8. At the begjnning ot the ID8et.ing I handed( la list 

118ing the aw ad hoc notation referred to in para. \6 ib6ii &rid giving 

a. briet deacriptim ar the locatiClll and tuncticms ot ~ach 11nlc so tar 

&$ vu known t4 J:ompared. this with\ a similar list 

prepared by hi!I dlfi start arter 6id na.ticm ot the trattic. Except ror 

tbe tact that SOID9 ot our links were quit.e unknown to th~ ~ t.he g~eral picture strcngl7 suggested that our ettort. and t mra ~ alread;r 

l.argel.7 caapl.91118Dt.8l'J'. Tbe;r haw far more interception but it is tied 

down to dq to~ operaticmal. requil8Bl8llt5 and they have little or no 

l~aure tor sea.rob and dneloiment 1 on llhich our relati vel.7 aml.1 party 

at l I can make a valuable cantributiona 

Form 781°C13S TOP SECRET CP.s:NOE 

eclassified and approved for release by NSA on 02-14-2014 pursuant to 

.0. 13526 
9. I ~ lth• =v-tea "'1ereby aj I I iiiJ on V etm1nh and othe:r Ji'a.r EUtem ptobieme 

vu cancmtraa .· ~ ilid ioned also that wen ~rking an Vietminh 

we tended to concent~te on l.A:lnger term prcblem (politico-econam:f.e situation and mct.ema.1 relations) rather than the day to da,y conduct ot the war~ 

10. M. Mourato.tt said that he would take .e copy of the cmplete French 

Vietminh interceptian data, superimpoae cm it the information about British 

int.ercepticn/abt.ained tl"Clll st~ ot ~e S$11ple ot material supplied by ua 

and aend the resul.te to us vith c~ta ahori.ng where we were duplicating, 

where our aft'ort was ot value to thell and were they would like U' possible 

to baye ..-.·· help. In reJ>l.T to a questim tr-om me he said that STR were 

vil.lhg t.o/euppq DSB with French raw material as required. 

11. .·· /.····/ // There QEa .··deal ot detail sorting and registraticn to be 

done before the can produce the annotated. Tez:ta referred to above, 

and W./187 ex:pec o ha'V'8 to wd.t a week or two before the next llOY9 cOllJIM 

frcaith•· 

l.20// /llwouldlike ua -.mwbile to continue to······s~p~ jraw •terial~etJalnb, as sent in the sample .. 

!:t:::::::i :s!:~h!~!a:~ ~ beina at Jeaat it should came 

(b) The inte.lJ.1a..tl(:• ...aiue of'/CJIU'I Jie largel,y lang 

tara and the ~ait~ would :l.'1 arq- c&ie not able to use it 

fol" til4tir shO?"t tena vork 1.Ulless ver.y specia-1. a.r!"angements could 

})B•detorquick delive17 .. 

13:.. The subject ot «Xcl>ange ot crypt recoveries was not dlscussedo 

:""S·x3 (hL(}) PL :S·Ei"'36(so use :3.Ei05 III EO 3.3(h)(2) 

14~ < an the ~ttmoc:ll ot Feb~ iith I ~ i.ii~t0<1 .... )bzl....:/-·~ ------:-~:--:-.... I 

to •et; -..e ot bis cJ.7pl; ~rot,• who had been world.:0$ oq I material 

eupplied 1'Tj ··.. I ....___ _ __. 

~=~~~=~~~~.:::;;LI'i:~ur::~=~:t 16. \He then sent toii l(tbe research otticer Ot I 

11h<a I nat\ last 79&1" - _. .... nam--, .... 1"""6 .......... Qi .OOC/2253) and the l&tter ,-ae 

aaae of the I I work on j _ 

IV 

C1l'HBR TOPICS REFERRED TO IR CCllVERSATIOO WI, \ 

17. 0 are developing electraiic high speed mchiner.Y, 

(a) for produeticn ot randcm me time key. 

and (b) for cryptanal,yaia .. 

18. ~ :ia ccnvinced that. the tuture ot c~ia lie• 

in use · _ Dt U' <11111' ca account of the vast bulk ot 

material that WOUid ne to procee•ed· 

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Form 781-CJJS TOP SECRET CANOE 
EO 3.3(h)(2) 

190 I lment.i~..d ~. monitorl?lg or '1.ll Allied/exercise by 

......,_.,.........I.and ~sed bis concern at the lack ot security in allled/communioa.-

tione. Tb~ I int.end to earrr ~ a larger scale mcnitoring or an 

ez:erciae thlll summr and b&Ye pl"'(Jllli.sed. to giTe US a. detailed report .. 

20. \ r l•Oweci - a nw ./ 

produced thli year 8ild Hn~ underi.ook to send me a cop,r. So tar as I 

could ju4ge tram quick perusal ot t.his book it is a. ~'ell &!Tanged work 

introducing basic mathematical principles at a relativeq elementary 

stage just. asl !do\ in their training courses .. 

21. 11'1.nall.y, before taking leave or J . hia tohe "ldlol• queeticm\ot aecurit;r ot dis iCIBWJacxon .. jI raised with 

(a)\\ He said that inllno intelligence report based on 

intercept.i«i goes ~ .. intelligence caopoun.d cm 

--......,....--....,...........--..... except cml,y I I 

telegra1111 which go to the fo.l"eign Ministry. 

(b) Inl l1"8)>0rt.a ~e issued traa the sub-cent.re 

with two\dU'terent\securit.7 gradings distinguished by 

ditterant\coloured\paper. 

(c) As regards diaaendnation in.J I he said that 

(i) Hflita1'1\ I"eport• vent to specified officers on the 

General. 8"tf 1lho lifer~ forbidden to give them 

further\ .. dietribution .. 

(ii) Reports ._ polittco-econanic-administrative matters 

went to et.ll&rl;r •specified otticers in the Security Police .. 

I 1ld.ndq undertOOk\to prepare a brier sts.tement on\ J 

Si8fi1E seci.irliy methods and smd\it.tome. 

EO 3 . 3 ( h) ( 2 ) 

PL 86-36/50 USC 3605 

- 3 -

Form 781-C 13S TOP SECRET C1A1_NOE 
REF ID:A517799 

TOP SECRET CAtrOE 

REPORT BrDSJiu~uj'l;~~t rol 

17/2/53 - J.S/2/5'J. 

Appendix t At 

/Ji;:O 3 . 3 ( h) ( 2 ) 

P\L 86-36/50 USC 3605 

In coaneeticn with technical utters arislng trail the d19it ot 

ADl. I we present. at a meting held in Par.la ~ Febru&J7 l?th. In. cc:ap&IJ7 with ADl, I was introduced to: 

I !Director 

· a scuae m. was emcerned 

p.ent ~a tor the prosecution ot the var against 

). !asked tor three things:-

(a) Spaced loop D/F equip119nt (1.5 - J.2!4.c/a accept(lble) 

(b) Mobile •singlet loop equipaant (1.5 - 15 Me/s acceptable) 

{ c) HF reoe.1:nrs; to good, but not neceaae.riJ¥ .field, tropical 

standards; a 80 hermstical.11" sealed as to preclude maintaoance in the field. P'requeney /coverage 1.5 to at least 

20 Mc/s. 

4. I toldl , ... 

Form 781-ClJS 

(a) That deli '1'917 ot tbe Marccmi DFG29 spaced loop equip.nent 9 

llbicb he was aware or• vu at least eighteen months and 

that there wu no other equipMllt k:nOYl to me v.t..th earlier 

deliver,-. 

(b) That no BF loop equiiaent waa 11111Mdiately available; either, 

as tar aa I know, ccmaercialq or fran Gov~t sources .. 

That""• aareel~ were~ .... ·•· to adapt an e:rl.st.··.ing receiver; poesib4 the & _ ~(a cwrcial write up cm wbieb 

I lett with) the dev'elopnsnt of a simple screened 

loop system. That we would add his requirement of 18 

set.s to the production run and do our best to lltEJet the 

target d&te ot tint deliv!llries in six DC11ths tU.e. 

That these set.a would be t.ropicalised9 as far as possible!' 

and would be omrplet.e with &DJ' auxiliary equipnent (such as 

cmvertore tor batte17 operation) and a. pack ot spares 

( preterabq 'll1'e-tllie' ) ., 

I undertook to send det.e.lls ot the equip!'911t, as. soon as 

it bad reached the deeign stage. I said I thought the coat 

~ :: =!rl:j1t, with spares backing, would be 

(c) That we would do our best to start the suppq, within a 

mmth, of 60 BP' receivers ot a general purpose tropicalised 

pattern. (I did not. cQ811.t JVlJelt to a specific• t1'P9 but 

indicated it would prebabJ.7 be a standard An1Jr ~e) o That 

the coat tdth spares backing would be aboutQ per kit .. 

TOP SECRET Ci\:NOE 
REF ID :ASl 7799 , 

TOP SECRET CAtTOE 

Appendix 'A ft 

(d) That the above agre91!111.te were made on the assumption that 

a satiatactor,r arrangemait tor the tormal transfer of Uia 

equipaent would be -.de short:Q-.. 

5. ~ !inquired about prices, I judged that he. as controller ot thejMit cmcerned, bad assumed that they might have to face up 

to~. 

6. pie di Rpuasion vaa axt.rwl,J' cordial snd I had the impressim that 9 thoup t.he f were bitterly dJ.aappointed we could not assiat them by the 

euppq at,/ spaced loop equipaent • nevertheless the;r were vecy grat~ul tor 

the aid/we were able to otterg\ particularl;r the eighteen mobile D/F 

equii-ents. 

7. ./ I I told • the\ hi• interests were f'ull7 represented cm 

ther-1 so that the!"$ is apparent17 a eatistact.oey coordination of their 

acititt;ffic ettort.o "nl.e subj.ct ot lli.niaturisatim came up and he stated 

that he WU not &w&re ot 4lf¥ special progress in that field, resulting intbe production ot Vf!ll7 small recei~rs or the pocket type, etc. 

EO 3 . 3 ( h) ( 2 ) 

PL 86-36/50 USC 3605 

EO 3 . 3 ( h) ( 2 ) 

- 2 -

Form 781-Cl3S TOP SECRET CANOE