This paper discusses on the problem of information security from message level, and introduces emphatically information theory based cryptology and complexity theory based cryptology.
文章从消息层次上讨论了信息安全问题,重点介绍了信息理论密码学与复杂性理论密码学。
The core for information security is cryptology that includes private-key cryptology and public-key cryptology.
信息安全的核心是密码体制,包括私钥密码体制和公钥密码体制。
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