N W r O —G C G R E T 1 COPY NO. S.G. 171/27 DECLASSIFIED-PUBLIC DISCLOSURE IMSM-130-96 DECLASSIFIE-MISE EN LECTURE PUBLIQUE N ovember 1955 Pages 1 - 3 , Incl. REPORT BY THE COMMUNICATIONS-ELECTRONICS COORDINATION SECTION to the STANDING GROUP on USE OF THE CRYPTOGRA PHIC MACHINE WIM (BID/56O/1) BY THE UNITED KINGDOM FOR ALL CLASSIFICATIONS OF TRAFFIC (CECS 101) THE PROBLEM 1. To approve the use of WIM (BID/560/1) for the transmission of COSMIC and of all classifications of NATO traffic. FACTS BEARING ON THE PROBLEM 2. The United Kingdom has under production an electro m echanical start/stop on-line cypher device using one-time key tape. The machine is analogous to and will inter-operate with ETCRRM and SIGTOT which have been approved for the transmission of all cate gories of NATO and COSMIC traffic. 3. Pull details of the machine and an opportunity of examining it have been afforded by the United Kingdom to the French and United States Govern m ents. 4. The tape used by the m achine is produced by the same equip ment and procedures as are used for the production of tape for 5 UCO. These methods and procedures are known to the French and United States Governments and have been approv ed by SECAN. 5. The United Kingdom Services plan to use these equipment on some circuits which are "NATO national tails" and on which therefore, in a ddition to na t ional traffic, NATO tra f fic is p a ssed. The U.K. Services will wish to pass this traffic with the security, DIST: A B C D El(less BJSM),2,3 - S.G. 1 7 1 / 2 7 1 %&fU s p ee d a n d e f f i c i e n c y a f f o r d e d b y a o n e - t i m e tape o n - l i n e mach i n e DECLASSIFIED-PUBLIC DISCLOSURE IMSM-130-96 DECLASSIFIE-MISE EN LECTURE PUBLIQUE r a t h e r t h a n by the CCM. 6. Th e U n i t e d K i n g d o m i s n o t in a p o s i t ion to p r o d u c e this m a c h i n e in s u fficient n u m bers to o f f e r it for use b y N A T O n a t ions or commands. CONCLUSIONS 7. It is c o n c l u d e d that S t a n d i n g G r o u p a p p r o v a l s h o u l d be g i v e n to the use of W I M (BID/ 560 / 1 ) for the t r n n s m i s s ion of C O SMIC an d of all c l a s s i f i c a t i o n s of N A T O traffic. R E C O M M EN D A T I O N S 8. It is r e c o m m e n d e d that; a. The above c o n c l u s i o n be approved. b. A m e m o r a n d u m as at the E n c l o s u r e be d i s p a tched. m m m * COPY NO. ENCLOSURE NORTH ATLANTIC MILITARY COMMITTEE DECLASSIFIED-PUBLIC DISCLOSURE IMSM-130-96 DECLASSIFIE-MISE EN LECTURE PUB LIQU E COMITE MILITAIRE DE L'ATLANTIQUE NORD S t a n d i n g G roup M E M O R A N D U M FOR: SUBJECT : 1. Groupe Permanent M i n i s t r y of D e f e n s e , London, E n g l a n d Supreme A l l i e d C o m m a n d e r Euro p e Supreme A l l i e d C o m m a n d e r Atlantic C h a n n e l Comm i t t e e . Use of the C r y p t o g r a p h i c Mach i n e W 1 M (BID/560/1) for all C l a s s i f i c a t i o n s of T r a f f i c On the S t a n d i n g G r o u p a p p r o v e d the use b y the U n i t e d K i n g d o m of the on-line, o n e - t i m e tape c y p h e r mach i n e k n o w n as W I M (BID/560/1) for the t r a n s m i s s i o n of C O S M I C and of all! c l a s s i f i c a t i o n s of N A T O traffic. 2. Th e U n i t e d K i n g d o m has no surplus W I M m a c h i n e s and is unable to o ffer the m a c h i n e for use b y N A T O c o m m a n d s or b y other NATO c o untri es, F O R T H E S T A N D I N G GROUP: DIST: A 1 - 6 ,8 , 1 0 , 1 1,13,16 D El (less B J S M ) ^ ^ G h8 X: E U SEC (2) S;G. 171/27 3 - Enclosure