The algorithm is referred to as a stream or block cipher depending on whether the algorithm transforms the message one byte at a time or a block ( eight bytes) at a time. 算法被称作流密码(streamcipher)还是块密码(blockcipher),取决于算法转换消息时是一次一个字节还是一次一个块(8个字节)。
Finally, Firefox sent out one last unencrypted message, a "Change Cipher Spec" record 最后Firefox发出最后一条没加密的消息,一个“ChangeCipherSpec”记录
One byte of cipher text is generated for every byte of plain text contained in the message. 对包含在信息中的普通文本的每一个字节产生密码文本的一个字节。
At the same time, the thesis brings forword a new quantum encryption protocol and analyses its security. The protocol that combines error correcting code, traditional cipher and quantum mechanics uses shared key and single quantum to transfer private message. 本文利用纠错编码、传统密码与量子原理相结合提出了一个基于单量子的量子加密协议,并且分析了量子加密协议的安全性。
Block cipher is one of the most important components in cryptology, and it is always served as the core cryptological algorithm in the aspects such as data encryption, message authentication, key management, and so on. 分组密码是现代密码学的重要组成部分,是信息与网络安全中实现数据加密、消息认证及密钥管理的核心密码算法。
In cryptography, a block cipher, as one type of the symmetric ciphers, is a very basic cryptographic primitive, which can be used to devise stream ciphers, hash functions and message authentication codes. 在当今密码学领域,分组密码,作为对称密码算法的一种,是一种基础密码算法,其结构也常常被用来构造流密码,哈希函数以及消息认证码。
Cryptography will be spread for the cipher text to achieve copyright protection. With digital signature to the message digest appended to the protection of information, the purpose is to prove that the protected information is true and complete. 密码技术将被保护对象加密为密文进行传播,实现版权保护;数字签名技术对被保护信息处理,将得到报文摘要附加到保护信息中,证明被保护内容的真实、完整。