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基于双重分组和密钥计数的并行认证模式
引用本文:黄玉划,胡爱群,宋宇波.基于双重分组和密钥计数的并行认证模式[J].中国工程科学,2004,6(7):70-74.
作者姓名:黄玉划  胡爱群  宋宇波
作者单位:东南大学信息安全研究中心,南京,210096
基金项目:国家高技术研究发展计划(863计划)
摘    要:由于CBC-MAC模式不可并行处理,提出了一种基于双重分组的并行认证模式(PKCB).PKCB模式同并行认证模式PMAC相比,安全性和速率都有显著提高,PKCB认证模式与CTR(计数器)加密模式结合可构成分组密码算法的一种全工作模式.在此基础上提出了一种基于密钥计数的并行认证模式(KCTR-MAC).KCTR-MAC模式安全性比PMAC模式高得多,而速率未降低,KCTR-MAC认证模式和CTR加密模式结合也可构成分组密码算法的一种全工作模式(2CTR),2CTR模式的综合性能不亚于标准模式CCM(CTR with CBC-MAC),是一种安全快速的实用模式.

关 键 词:认证模式  CBC-MAC模式  PMAC模式  CTR模式  CCM模式
文章编号:1009-1742(2004)07-0070-05
收稿时间:2003/7/10 0:00:00
修稿时间:2003年7月10日

Parallel Authentication Modes Based on Double Blocks or Key Counter
huangyuhu,huaiqun and songyubo.Parallel Authentication Modes Based on Double Blocks or Key Counter[J].Engineering Science,2004,6(7):70-74.
Authors:huangyuhu  huaiqun and songyubo
Abstract:The CBC-MAC mode is not a parallel one. A parallel authentication mode (PKCB) based on double blocks was put forward in this paper. The PKCB mode had a marked improvement on security & speed over parallel authentication mode,PMAC. And it may be combined with the CTR (counter) encryption mode to form a full block cipher mode. On this ground,another parallel authentication mode (KCTR-MAC) based on key counter was advanced. As compared with the PMAC mode,the KCTR-MAC mode had a marked improvement on security,while its speed did not become lower. The KCTR-MAC authentication mode may be combined with the CTR (counter) encryption mode to form a full block cipher mode (2CTR),too. The 2CTR mode had a performance advantage over the standard mode,CCM (CTR with CBC-MAC). And it was a fast,practicable mode with security.
Keywords:authentication mode  CBC-MAC mode  PMAC mode  CTR mode  CCM mode
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