AES算法EAX加密认证模式优化技术研究

Research on Optimizing Encryption-authentication Mode of EAX in AES Algorithm

通过深入分析AES算法的EAX加密认证模式,提出一种新加密认证模式PEAX(Parallel-EAX),其中的加密和认证模式分别采用RCTR(Random CTR)和POMAC(Parallel OMAC)模式,使EAX-AES算法处理过程完全并行化,从而在软件和硬件实现上都达到满意的性能.PEAX保持EAX的优点,并能使认证处理和加密处理都基于相同的加密核心单元进行的,有效地降低实现过程的复杂度.最后并通过Visual Studio 2005软件仿真,验证PEAX模式优化的性能.

The security issue has been remaining central in the research field of AES. Based on the thorough study on the cipher mode of AES, this paper proposes a new authentication-encryption mode called PEAX （Parallel-EAX）, which consists of RCTR（Random CTR） and POMAC（Parallel OMAC） mode. The newly introduced authentication-encryption mode enables the parallel processing of encryption and authorization, and can achieve better performance both in software and hardware implementation. Without sacrificing the advantages of EAX, both encryption and authentication processing in PEAX are conducted on the basis of a single cipher coi＇e unit such as AES, resulting with lowest complexity in implementation. The simulation result indicates that the proposed PEAX functions sufficiently well in the Visual Studio 2005 development environment and is up to the technical expectation.