TY - BOOK AU - Feigenbaum,J. ED - CRYPTO '91 TI - Advances in cryptology - CRYPTO '91: proceedings AV - QA76.9 A25 C79 1991 PY - 1992/// CY - Berlin PB - Springer-Verlag KW - Computers KW - Access control KW - Congresses KW - Data transmission systems KW - Security measures KW - Cryptography ER -