Advanced Cryptographic Techniques for Computers Cryptographic techniques which can be used to maintain the confidentiality of information processed by computers are dealt with. Special emphasis is paid to the unique characteristics of computer files that make many cryptographic methods of little use. Relative security, costs, and preferred methods are included in this paper. CACM December, 1969 Van Tassel, D. cryptographic, cryptanalysis, ciphers secrecy systems, security systems, confidential information processing 1.3 2.12 2.19 3.73 3.81 4.41 CA691204 JB February 15, 1978 4:20 PM 1808 5 1808 1808 5 1808 1808 5 1808