RESEARCH INTO THE CRYPTOLOGIC ASPECTS OF ESP

Declassified in Part - Sanitized Copy Approved for Release 2011/12/01: NSA-RDP96X00790R000100030051-9 INTRODUCTORY MEMO SEP 70 SUBJECT: Research Into the Cryptologic Aspects of ESP This paper together with its appendixes and inciosures is intended to present the first of a series of contributions toward a more complete knowledge of certain spedial factors bearing on threats to COMSEC. In particular this study seeks to increase our knowledge ' of ? one factor known as PSI which is presently littl...