共 2 条
[1]
网络信息安全与PGP加密[M]. 清华大学出版社 , 樊〓丰,林东编著, 1998
[2]
RFC1421 Privacy Enhancem ent for Internet E-Mail:Part I:Message Encryption and Authentication Proce-dures. Linn J. Federation of European Biochemical Societies . 1993