分组密码工作模式的研究现状

The State()-of-The()-Art of Research on Block Cipher Mode of Operation

分组密码工作模式是利用分组密码解决实际问题的密码方案.好的工作模式可以弥补分组密码的某些缺憾;相反,不好的工作模式可能带来安全隐患.工作模式的研究始终伴随着分组密码的研究历史,新的分组密码标准的推出,都会伴随着相应工作模式的研究.从针对DES的ECB、CBC、CFB和OFB,到针对AES的CTR、CCM、CMAC、GCM和AESKW,作者以各种模式标准为主线,介绍分组密码工作模式的设计理念、安全模型、二十多年的研究成果以及发展现状.

A mode of operation, or mode, for short, is an algorithm that features the use of a symmetric key block cipher algorithm to provide an information service, such as confidentiality or authentication. A good mode can remedy some weaknesses of block cipher, on the other hand, a poorly designed mode may be insecure even though the underlying block cipher is good. The research of mode always goes with the development of block cipher. With the advent of new block ciphers, there is a need to update long-standing modes of operation and an opportunity to consider the development of new modes. From the ECB,CBC,CFB and OFB modes of DES to CTR,CCM, CMAC,GCM and AESKW modes of AES, the authors introduce the design rationales, security model, research results and the state-of-the-art of research on block cipher mode of operation in this paper.