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映射相等问题的安全双方计算协议

DOI: 10.13190/jbupt.200806.5.197, PP. 5-8

Keywords: 密码学,安全多方计算,等价关系,映射,有限全变换半群

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Abstract:

安全多方计算协议是指拥有秘密输入的方,在不泄漏各自秘密输入的前提下共同正确地计算1个函数,并且除了输出所反映的信息之外,任何一方的输入信息都不泄漏.基于可交换确定型加密体制,在半诚实模型下给出了判断元素属于集合、集合相等及同一集合上的等价关系相等的安全双方计算协议.给出了利用核、像和核类来判断映射相等的方法,在此基础上进一步提出了判断映射相等的安全双方计算协议,并对协议的正确性,安全性和效率进行了说明.

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