摘要
在标签硬件资源受限情况下,为提高UHF RFID系统认证的安全性能,提出一种Hash函数构造算法.算法选择6个混沌映射组合之一来构造Hash函数,通过切换每组中的2个混沌映射生成混沌序列数组,再经过全序列取数策略,将生成的两组数值映射为最终的Hash值.结果分析表明,该算法具有很好的单向性、初值敏感性,在硬件资源和安全性能两方面满足了UHFRFID系统的安全认证要求.
In order to improve the security of authentication under the condition of Tag hardware resource limitation, a Hash function construction algorithm is proposed. One of the six chaotic mapping combinations is selected to construct the Hash function flexibly. Chaotic data array is generated by switching the two chaotic mappings in one combination. Two data items are produced according to going through every array-element strategy, and they are transformed into Hash value finally. The result shows that the algorithm has good irreversibility and sensitivity to initial values, and satisfies the security requirements of UHF RFID authentication with hardware resource limitation.
出处
《微电子学与计算机》
CSCD
北大核心
2009年第6期5-8,共4页
Microelectronics & Computer
