Op-20/B ~ 

(SC)AS 

~~ji~4;J 

All'l"ICE OF THE CHIE1 OF NAVJ. OPERATIONS 

WASHINGTON 25, D.C. 

Serial 0009P20 

1 SEP 1948 

MEMORANDUM P'OR THE SECRETARY OF THE NAVY: -)::o 3 . 3 ( h) ( 2 ) . 

PL 86-36/50 USC 3605 

Subject: Brier on attached NSC Item. 

1. All agree that there is no completely satfs:f'actory answe 

to the problem. The important point is that when a. d..eclsion is made b 

NSC, that those making it should know the results tha.t ma.y\.be expects& 

regardless or which course is selected. 

2. The answer is - "Should the _..,.__ ........ ___ """'_ 

prevail on 'Western Union' Powers particularlyμ_..,...,........-4r'"""""u..i... ........ oL.W.ii....rouil..IOLI~ 

security of their rapid communications ,/.by /hav ng th El .___ ____ -...,.........,....,.__. 

proTide a secure cryptographic system -/and thus try to prevent th.e 

U.S.S.R. from decrypting and reading messages a.bout Weste:rn\Unlon p.lan1 

and intentions?" Naturally, the Secretary' or State and the\. British Prlli 

Minister wish to insure seollrity or auch communications. 

an was - then 

(a) Some improvement in communication security might 

lresult, but t'llis '!lould rem1>dy but onjo detect ii\ th& 

{ b) Becuase /ther // J• make this proposal, .tr,e 

~ land btners concer ed will believe that· t·ti .• e 1 t are able to read I I encrypted ~m-e_s_s_a_g_e_s_a_n_d-will change and improve their codes 

and ciphers to our obvious disadvantage. 

( c) I 

L,s....,e"""'v""'e""'r..,a .... l ......... m""o'""n""'t-n ....... s-a:-n""'d.......,p""'o"""s"""s""'"1"""0,...,i....,y ......... f"""o"""r,...,e"""v"'"'e"""r=-------=w""'n .... e:::""r=ea=s-t"'='l1-=e----..... 

U.S.S.R. probably would continue to get considerable 

intelli ence as at resent .from their a ents within 

- 1 -

TOP BECRM' SLI1"i' .fll'f TOP SEBRET. . 

eclassifi ed and a roved for release b NSA on 03-12-2014 ursuant to E .0. 1352 
Subjeot: 

REF ID:A517043 

NAVY DJCPARTMENT 

OFFICE OF THE CHIEF OF NAVAL OPERATIONS 

WASHINGTON 25, D.C. 

l SEP 1948 

Brief on attached NSC Item. ,f!E;o 3 . 3 ( h) ( 2 ) 

- - - - ~/ :M=i1-S&-3-6/5'0 -us-e 3605 

4. The CNC (Op-20) reoonDaenda that -

(a) No action be taken to impro'Yel // fcol" other weak 

ally) cryptographic seourity,/ln peacet1m$. 

(b) The U.S. reoonnend to U.K •. the/adoption of \this (a) 

as a combined I tl>olioy. 

( c) I d;· - I be \considered 

before releasing any 0Iaasl=1ea cryptographiQ \int'ol"-

mation to tbel I 

(d) No action be taken b 

(e) 

(f)I l/disoreetly advocate moving headquarters 

01 fl06G01A onion" disousaions from r t- I 

aa a means of reducing number of eonmun1oa-1ons tnat th~ piust send. 

(g) If, despite the gra'Ye disadTa.,....... .................. .....-.................. .........., 

1 t should bei decided that the 

(h) No unilateral action be taken by the U.S. as the 

I {has an equal interest and only combined action 

shou d be taken. 

5. The CNC (Op-20) strongly supports the Army and CIA 

position (as opposed by State and Air Force), and recommends -

That the Secretary support CIA and Army unless he TOP SEGRET perso.aally decides that the State Department must be "T~~ ----~-"T supported eYen though the cost to U.S. interest by 

OP aI100RJIF NT reason or such support will be great; and e'Ytm though 

T

0 ; i that course may proYe ineffective. Earl E. stone 

opy t 0 ·Qp-)2. Respectfully, Rear Admiral, USN 

Op-20-2 · 
REF ID:A517043 

TOP SEB·RE'h JNr 

ro'.!9 3!CftE'f 6LHff 

31 August 1948 

MEMORANDUM FOR THE NATIONAL SECURITY COUNCIL: 

Subject: 

Reference: 

Enclosure: 

1. 

USCIB to the 

reports on a 

of State. 

Security of Communications Relating to 

International Diplomatic Activities Participated 

in by the United States. 

(a) NSCID #9. 

(A) TOP SECRET Memorandum for the Executive 

Secretary, NSC from the Chairman, USCIB 

dated Jl August 1948. 

There is attached a memorandum from the Chairman, 

Executive Secretary enclosing majority and minority TOP SECRET matter referred to USCIB by the Secretary 

2. Because of the need for special security safeguards 

in the handling or this matter it is necessary to depart from 

established procedures for handling NSC reports. The facilities 

ot USCIB therefore are being employed to limit the distribution 

ot the material relating to the subject problem. 

J. USCIB members have been charged with the responsi- bility or assuring that the heads of the departments represented 

by them are furnished full background information prior to 

Council consideration. 

4. This item has not bee~plaoed on the agenda tor 

the NSC aeeting September 2 but in view or the urgency or the 

matter the Council may desire to consider the subject at that 

aeeting. 

SIDNEY W. SOUERS 

Executive Secretary 

':POP SlliORJf.P SLIN'f 

TOP SECRET~-
"' --

REF ID:A517043 

EO 3.3(h)(2) 

PL86-36/50 USC 3605 

...... rm• man1u llQUUll •. 1AU2'Us llCIQlM MllWL 

lattJHt: a.ow-1 'F or • 1r •• 1 .. ,,.on• a.iai1ns to 

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1D l:J' ~ Ua1te4 9'&,es. 

(a) HOID #I 

(a) USOII llaJor1'7 a.port 4ate4 31 .a.cun lMI. 

(B) UHia •1•rit1 Repori ._, .. 31 .&tlg1l•t 1141. 

1. fb.e honh.17 ot atat• 11&• nqae-'-4 VIOD 

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REF ID:A517043 

-RP-mf G LI f-f 

Rear Admiral Inglie 

TM &n.11'1'" SH~ 

·~io-.1 IMvi qr C.UMU EO 3.3(h)(2) 

PL.86~36/50 USC 3605 

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REF ID:A517043 

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REF ID:A517043 

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REF ID:A517043 

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PL 86-36/50 USC 3605 

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EO 3.3(h)(2) 

PL 86-36/50 USC 3605 

a. .... '111 I~· &.c- cu-. 

a. ~ ct wor.-.1- AV I l····0c • .,....,t. 

~ hue..,.. 1M\1.Y1~• t<1 pJJ.LJ.MJ. ~--z. 

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.REF ID :ASl 7043 

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EO 3.3(h)(2) 

PL 86-36/50 USC 3605 

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