Introduction - If you have any usage issues, please Google them yourself
Cryptography to secure communications for the purpose of research, but limited to data communications. Cryptographic techniques also applies to information to identify and digital identification, to prevent spoofing. Password encryption algorithm is the antithesis of cryptanalysis, that is, deciphering the technical studies. Encryption and deciphering is a contradiction to understand the study of deciphering the encryption is necessary.
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计算机密码学——计算机网络中的数据保密与安全(第2版).pdf