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1Novel Hash Function Based on Coupled Chaotic Map Lattices显示文摘Hash function has been widely used in cryptographic field. This paper proposes a Hash function based on complexly Coupled chaotic map latices(CCML).It is equipped with new features of parallel and flexible processing. Parallelism indicates that the algorithm can reach high level of efficiency and speed. Flexibility means the length of Hash function and message block processed each time can be easily changed to adapt to practical demand. Experimental results show that the Hash function is one-way, with high plaintext sensitivity, as well as its strong capability for confusion and diffusion, and collision resistance. In comparison with MD5 and another Hash function based on chaos, the proposed Hash function shows good performance.ZHEN Ping ZHAO Geng MIN Lequan LI Xiaodong 2014Chinese Journal of Electronics2014,23,4:2
2Merkle-Damgrd Hash结构并行扩展算法显示文摘利用松弛密码架构将Merkle-Damgrd结构的Hash算法扩展为并行结构的算法,可以利用多核处理器提高杂凑效率。给出的证明过程表明松弛密码架构在处理不同长度的消息时不具备抗碰撞特性。提出的新并行扩展算法基于松弛密码架构设计,该算法弥补了其安全缺陷,并给出了新并行Hash结构的安全性分析。分析结果表明新结构抗碰撞特性不低于Merkle-Damgrd结构的Hash算法。实验结果表明,新并行Hash结构处理长消息时有较高的处理性能。徐劲松 张民选 陈士伟 戴紫彬 2017国防科技大学学报2017,39,6:2
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