DISTRIBUfION 

U8LO 1 

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NSA-70 1 

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1 

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NSA-o641 2 

NSA-0621B 1 

NSA-701 l 

BSA.-902 2 

lfSA-74 26 

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PACIFIC PROCEssrirG ~~I'm' ' \ . . · ~ : ' . 

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Declassified and approved for release by NSA on 08-27-2013 pursuantto E .0. 1352a 

TOP SECRET I EIDER "' ~.. I r1 /1 , I, 

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O - Little or nothing known ot Cr.vptographic elements. 

1 - Basic T'ype of Crypto-system determined. 

2 - System partially solved but no messages yet readable. 

3 - Less than 5()1/, of all messages in the system readable to the extent 

of producing some intelligence. 

4 - over 50Cli of all messages in the system readable to the extent of 

producing same intelligence. 

5 - Readability esaenti~ caqpl.ete. 

A BSA 

Figures appJ:y to period ot 20 ~h to 13 June 1955 

TOP SECRET EIDER 

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