It is believed that in modern cryptography , any algorithm of encryption and decryption in cryptographical systems could be public , and the security should rely on the secure key 现代密码学认为,任何加密体系的加密和解密算法都可以公开,其安全性在于密钥的保密性。
Chapter 2 clarifies the cryptographical foundation of e - commerce system . it mainly introduces a hybrid cryptosystem using rc2 and rsa algorithm in our application and some message hash function producing message digest provided by ms ca ( microsoft certificate authority ) such as sha - 1 , md4 and md5 主要论述了系统采用的rc2和rsa相结合的混合密码体制,另外对msca ( microsoftcertificateauthority )所提供的几种产生消息摘要的消息散列函数如: sha - 1 、 md4 、 md5等也进行了分析。
cryptographical meaning: Adjective: cryptographical Of or relating to cryptanalysis - cryptanalytic , cryptographic , cryptologic , cryptological See also: cryptography