USCIB: 13.7/26 

HEMOJiANDUM FOR THE MEMBERS aF USCIB: 

APPENDED DOOUMEUTS COl:lT.r\IN 

CODE UOIID MATERIAL 

26 July 1954 

Subject: Delineation of Categories of CC.MINT. 

The enclosed report oi the Chairman, USCIB Intelligence 

Committee is circulated for consideration by USCIBEC in connection 

with item 4 of the agenda for the 17th meeting. 

Enclosure 

INT # 0004 d td 23 Jul 54. 

with enclosures thereto. 

USCIB: J.3.7/26 

TO:P SEO:R-Ef' 

APPENDED DCCUMENTS GOlJTAili 

GIDE WORD MATERIAL 

Declassified and approved for release by NSA on 02-24-2014 pursuant to E. 0. 1352B 

24 
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APPEUDED OOCUl.fil:NTS 

COllTAIN CODEWORD MATERIAL 

Ilt'r #0004 

23 July 1954 

MEivDlWJDUM FOR THE EXECUTIVE SECRETARY, USCIB 

Subject: Delineation or Categories or COMINT 

Reference: USCIB 5/460 dated 30 July 1953 

1. Pursuant to the reference, the Intelligence Committee worked 

out an agreed upon view as to the assignment or cryptosystems and 

classes of COMINT to categories in consonance with criteria provided 

in paragraphs 9 and 10 of Appendix ''B", Revised, and f'urther delineated 

in .Annexure Bl. 

2. INTCOM has agreed unanimously on the delineation of categories 

of OOMINT and recom.ends approval of the enclosures. NSA and GCHQ have 

also mutually agreed with the delineation of cryptosystems and plain 

text short titles as indicated in Enclosure 1. 

3. Accordingly, the Intelligence Committee recommends that: 

a. Enclosure 1 be approved on a trial basis for a period 

of one year. 

b. Enclosure 2 be approved and forwarded to LSIB. 

c. Enclosure 3 be approved and forwarded to CRC. 

4. Other actions in connection with implementation of the above 

recommendations are being studied by the Intelligence Committee and 

uill be reported upon at an early date. 

3 Enclosures 

1. "Delineation of Categories 

of COMIHT" 

2. D.raft Memo for I.Sm 

3. Draft Memo for CRC 

,:>J.a.~~~; H. C. SilM>NS 

Lt. Colonel, USAF 

Chairman, INTCOM 

APPENDED OOCUMENTS 

CONTAIN CODEWORD MATER.I.AL 

TOP SECRET 
DELilIBATION OF CATEGORIES OF COMINT 

In accordance with the provisions of the UKUSA Agreement, Appendix 11B11 , 

Revised, COMINT material \d 11 be categorized as follows: 

1. Traffic Intelligence 

a. CateSory I shall be classified not lower than COliFIDEH'TIAL, will 

not be designated by a codeword and shall contain: 

(1) ,__ ________ __.ltogethe:r with associated COMINT 

resulting from identification of the targets by means of 

the fellowing techniquesz 

(a) .Ab.alysis of easily discernable external features of a 

fixed nature, such as semi-permanent c~lsigns, nonE0~.3(h)(2) changing frequency, stereotyped and flxed length of 

PL 86..:36/50 USC 3605 

l:.ext code groups, and similar characteristics. 

(~)1 _____________ _ (c) Open violations 0£ security by Lhe target. 

(d) All additional Oat.ego:ry I te::hniques hereinafter 

described. 

(2) COl.fiNT based on translatio~s of plain language intercept 

from }Jorse, radio p~inter, and radio-telephone links, 

with no analysis or .interp:retati<m more sophisticated than 

that involving the study of such local low echelon map, grid, 

and zone reference systems and simple jargon codes as may 

be in7olved in the texts. 

Enclosure #1 with INT #CIJ04 dated 23 July 1954 

TOP SECRET FROTI I 
'.l;QP S!iGm ~ eor SEC.~T PFl,tJM98 

(.3) COMINT based on the rollowing material: 

(a) Radar tracking reports and visual observations reports 

as found in tactical or operational traffic. 

(b) Local grid or zone references. 

(c) Local procedural codes used for brevity purposes. 

(d) Plain text interspersed with cover words. 

( e) Naval tactical maneuvering codes, when used as such. 

(f) Jargon codes. 

b. Category II shall be classiried SECRET, will be designated by 

a distinctive codeword and shall contain: 

All end-product, except where specifically assigned to other 

categories, including that based on the rollowing: 

(1) 

(2) 

(.3) 

Freely available privacy and brevity systems such as 

-----~ucodes" PL 86-36/50 USC 3605 

EO 3.3(h)(2) 

Complex changing callsign and address systems. 

Enciphered aircraft type designation systems. 

c. Category III shall be classified TOP SECRET, will be designated 

by a distinctive codeword and shaJ.l contain: 

(1) All COMINT based on the analysis of additive enciphered 

textual address systems, specifically including the following 

current examples: 

(2) All COMINT derived from traffic obtained from. certain designated sensitive sources, where the nature or the source is 

such as to require a TOP SECRET classification. 

Example: ______________ ___. 

- 2 -

TOP SECRET FROTI I 
:i'.Q.P.§~! F!RQm tfOP SEC~ ~~~-

(3) All Traffic Intelligence end-product which involves the 

use of identifications and other data derived from 

Category III Crypt Intelligence. 

(4) :Material involving sensitive collection procedures or the 

revelation of success against unusual, sensitive, or complex 

transmission procedures and devices peculiar to the tar&et. 

2. Crzyt Intelligen~ 

a. Category II 

EO 3.3(h)(2) 

PL.86-36/50 USC 3605 

(1) The following cr-JPtosystem.s. are assigned to Category II: 

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TOP SECRET FROTH 
EQ 3.3(h)(2) 

(2) The following cryptosystems are "suitable" fc;>r assignment 

to Category II at any time USCJB or LSIB consider it 

necessary. Until assigned to Category II, they will be 

handled as Category III systems. 

PL 86".'.36/50 USC 3605 

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TOP SECRET FRDTH 
~GP SEISRl!i'f FRO'fli 

EO 3.3(h)(2) 

PL 86-36/50 USC 3605 

b. ~ego:c;y III 

All cryptosystems not specifically assigned to Categories II or 

I are assigned to Category III. 

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TOP SECRET FROTH 
• ~OP SElGH!'f' F?RO'f'il 

J. Plain Text 

a. Cate~o!.X 1 

(1) Operational M:ilit lain text in 

is assigned to 

Category I. 

(2 

b. Category II 

All plain text other than those types specifically assigned to 

Categories III and I. E0~.3(h)(2) 

c. Category III PL 86:c36/50 USC 3605 

(1) Items selected on an individual basis because of extremely 

high intelligence value. 

(2) Plain text passed on ...._ ______________ __ such sensitivity a.ud high intelligence value that source 

protection is a paramount consideration. 

4. Sub-categories are established as follows: EO 3.3(h)(2) 

PL 86-36/50 USC 3605 

a. Within Category II - None. 

b. Within Category III -

(1) ....__ _____ ..... ~ ;../This sub-category shall be designated 

by a separate codeword, and shall be considered less 

sensitive than the ma.in body o:f Category III. 

(2) _I --------~lain text passed on circuits controlled 

by the l .... _____________ __.I This category 

shall be designated by a separate codeword and shall be 

considered less sensitive than the main body of Category III. 

TOP SECREl= FROTI I 
• 

- SBeftB'f 

ro#*eck2'j-A65192 • 

DRAFT 

APPENDED DOOUH!!NTS 

CONTAIN CODEWORD MATERIAL 

Mpm.AND'QM FOR THE §liCRETARY,, LONDON SIGNAL IN'l'ELLIGENCE BOARp: 

Subject: Delineation of Categories of COMINT. 

Reference: Revised Appendix "B", UlUSA Agreement. 

1. In consonance with the provisions of paragraph 11 of the reference, 

the enclosed delineation ot categories of COMINT is forwarded. 

2. USCIB appreciates the tact that this initial delineation of categories 

and assignment of COMINT is not as specific in all respects as some had 

originally envisioned. However, it is felt that the enclosure constitutes 

a suitable beginning. 

3. With respect to paragraph 3l:>, Annexure Bl, of the revised Appendix "B", 

tBCIB has designated the Director, NSA, as the technical agent to handle preparation and maintenance or lists of all oryptosystems mutually adjudged 

suitable for inclusion in Category II. 

4. USCIB vould be grateful for an early indication from your Board as 

. to whether or not the enclosed listings are agreeable, and if so, what would 

be the earliest date upon which to make them effective. 

Enclosure 

a/s 

{DRAFT) 

RUFUS L. TAYLOR 

Captain, u. s. Navy 

Executive Secretary, USCIB 

Enclosure #2 w/INr #0004 dtd 23 July 1954. 

TO-P SEORE'F 
TOln riv UJf~A6579~ ..... ...,,............. W 

DRAFT 

APPENDED DOCUMENTS 

CONTAIN CODEWCRD MATERIAL 

EO 3. 3 I h I I 2 I 

PL 86-36/50 USC 3605 

Subject: Delineation of Categories of COMINI'. 

1. In consonance with the provisions of paragraph 11 of the reference, 

the enclosed delineation of categories of COMINT is forwarded. 

2. USCIB appreciates the fact that this initial delineation of categories 

and assignment of COMINT is not as specific in all respects as sorr..e bad 

originally envisioned. However, it is felt that the enclosure constitutes 

a suitable beginning. 

• 3a With respect to paragraph 3b, Annexure Bl, of the revised .Appendix "B", 

USCIB has designated the Director, NSA, as the technical agent to handle preparation and maintenance of lists or all cryptosystems mutually adjudged 

suitabl.e for inclusion in Category II. 

4. USCIB would be grateruJ.. for an early indication from your Board as 

to whether or not the enclosed listings are agreeable, and if so, what would 

be the earliest date upon which to make them effective. 

Enclosure 

a/s 

(DRAFT} 

RUFUS L. TAYLOR 

Captain, U. S. Navy 

Executive Secretary, tBCIB 

Enclosure #3 w/Iwr /}0004 dtd 23 July 1954. 

TOP SECRET