分组密码的并行工作模式

Parallel Processing Model of the Block Cipher

以AES为例,探讨分组密码的并行工作模式.在分组密码的四种标准工作模式中,除ECB模式外,其余工作模式均存在着反馈形式的迭代,这对数据的并行操作是一大障碍.给出了相应的三种并行密码模式,在不改变原分组密码算法的密码学特征的前提下,可以达到线性的加速比.

Taking AES as an example, parallel processing model of the block cipher is discussed. In the four parallel processing models of the block cipher except the ECB model, there exists iteration with feedback, which is an obstruction of parallel data processing. In this paper, three parallel cipher process models are presented. They can reach linear speed up without changing the cryptographic property of the original block cipher algorithm.