摘要
DES(Data encryption standard)是ISO颁布的数据加密标准,通过对DES算法的分析,提出了用DSP实现数据加密标准算法,通过循环或迭代,将简单的基本运算(如左移、右移、模2加法等)和变换(选择函数、置换函数)构造成数据流的非线性变换(加密变换或解密变换),从而实现对计算机数据进行密码保护。DSP快速运算有利于数据加密、解密和数据的传输。
The data encryption standard (DES) is issued in ISO, and the DES algorithm is realized based on DSP. Through circulation or iteration, basic operations (shift left, shift right, mode 2 and addition) and transformations (function choice and function replacement) are constructed to the nonlinear transformation of the data stream (encipherment commutation or decryption commutation) to realize cryptogrammic protection for the data. The rapid computation speed of DSP is useful for the data encryption, decryption and transmission.
出处
《数据采集与处理》
CSCD
北大核心
2006年第B12期266-268,共3页
Journal of Data Acquisition and Processing