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REF ID:A6721M 

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,\ \, \\ '\. , eclassified and approved for release by NSA on 

\ · \ \ . ' \ 2-18-2014 ursuantto E.O. 13526 
DRAFT 

...,p 4 . 

Toz Assistant Chief of Staff, G-2, War Department General Staff, ~-4 ~ Washington 25, D. c., Attention: Lieutenant Colonel Goodrich ~ 

~.J)~A.<;,a~.~v~ 1. Attention is invited to the ~ttached communication from~ ~ . ,. . U.<;,~ ,... 

~ 

_§!ate)~epaztaeftt requesting the issue of four (4) ~3..-A-cipher machinei:, t:?tu~ M,-,34-A. " •1 - ' I .,-7'- • "!; / 1'7\1 It:!(" 2. Subsequent to the receipt of this letter, aditi:i~ie!Wd. equipment 

~ t;:~;...,. 

was informally requested for installation atAStockh?lm and Lisbon. 

3. Through informal contacts with the Navy, it has been ascertained 

U,S.N~ 

that the State Department requested~CM cipher machines for issue to 

their install~ticns in Madrid, Stockholm, Lisbon, Istanbul, Ankara, Algiers, 

and Cairo.~~Navy " Department agreed to the installation of HCM cipher 

machines in Ankara, Cairo, Istanbul, and Algiers, but declined to issue 

the subject equipment for installation in Stockholm9Lisbon, and Madrid 

for security reasons. 

4. The State Department, at present, ~ has HCM cipher machines in 

" 

most of its South American 

~ 

installations. At the present time, the State 

Department has eight (8),...M-134-A cipher machines,of which four (4) are 

located in the United States Embawsy in London and four (4) in the State 

Department in Washington. 'tae,....&ed.e i:o.op in wh±ch bllie equipment ls locabed 
DRAFT 

REF"~7287 

awm.1 e 

re~s lllJ YMiictd_i.'tiatn .. £-&J-Gr-.Jifax.¥- cryptogl!aphiA security ;8 not -.jeopard~ 

6. In order to facilitate production of cryptographic systems, 

training of code clerks, maintenance of 'tile equipment, and handling of 

traffic, it is desirable that the same ~c~gr~ic e~uipment be 

~ 

used throughout an organization. This is not the situation flt the State 

Department communicatinns net at the present time~since both HCM and M-134-A~ 

cipher machines are now in use. The following three plans are offered as ~ 

poss'ible solutions to this problems , ~ 1: • · l . " ~ _:_J ~ a. The ~ni ted States Army ,has available th:i:tty (30 ),,.. M-134-A ~ ~ IA ~Q.:l:a.. (J.o b AA LI.~.~ l.M\Jl.. .A) ~ ~ I i ~~pher machines. This equipmen~~could be issued to the Military Attachea.J~ 

at an Embassy or Legation,.as the case may be. ~"'Military Attache ~be I ~ 

responsible for maintaini~physical and cryptographic security. The . ·~ '/\ :~ 

equipment Could be operated under his supervision by United States Army L2 

\.e.A.. 1\-tN,~ .... N M ~QJ\.. _..../~ ·t~ 

personnel which 

~~ 

would be furnished •k&K him for this purpose.~ SJJ 

o.. ~U.S.~ ~~t~'.A. b. An alternate plan would be to :r-e,the Converter M-325 for I> _ 

~'we o. ~-~~~~ .QQc.~~~M~~~ Department use. I\ The !!ryptographic principles involved-> in the~ ~ 

are similar to those of the German Eni~; however, the mechanical qesign . , . _ 

ot the M-325 is 

~ 

f"'..... 

.f!C::t superior to the o.u.4. German ~~"°"" design_, ~ It is r~ felt that tle r ~~ ,-

fn., ollJL ~~~~ . M-325 could be iHwea -ee-1'reHn'i State Department ie 1'1e:lla"tio11s requiring 

high level cryptographic 

A 

systems. It 

. 

would be necessary 

,.. 

to 

~~ 

train,personnel 

\..U).Q. ~ 

at these installations in the~maintenance of the equipment; however, it is 

Several hundred M-32S cipher 

available 

" 

to the State Depariment"in ~~~ the near future. 

'fftei.ip.....;ba&IWiL-111nu.;1...Qo-1HH~· :mtttt--w-imbas tiys and hga ti:tme. 
REF ID:A67287 

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REF ID~7 

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c. A composite plan embodying ~~ the principles of a fPld b, above, . would be t~ limit the issue 0£ the oi:jJller-~ M-134-A to selected 

~ ~ M~,~1~.1~1~,~~.~ -U. 

Embassies) The~s~le~~ion would be accomplished through conferences 

" ~ of 

between representatives ~ the War Department and illlln the State Department. 

The provisions £or maintaining cryptographic and phypical security would 

be the same as those outlined in a, above. All Embassies and Legations 

lould be ~to.~ M-325. This plan would provide 

high level, high speed cryptographic c~i~~b~es 

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