摘要
安全多方计算、电子投票等领域需要用到同态加密技术,但现有的同态加密技术最好的成果是整数范围内同态加密机制,并且运算仅限于加密和乘法,这将限制同态加密技术的应用。文章定义了一种新的运算——类模运算,在类模运算的基础上将同态加密扩展到实数范围上,运算也扩展到加、减、乘、除四种常见的算术运算。
The homomorphic encryption scheme can be used in many useful applications including multi-party computation,electronic voting,and mobile cryptography.The existing homomorphic encryption scheme is the homomorphic encryption scheme in the range of the integer,and the possible operators are restricted to addition and multiplication only.In this paper,a new operation is defined——Similar Modul.Base on the Similar Modul,the number sets of the homomorphic encryption scheme is extended to real number,and the possible operators are extended to addition,subtraction,multiplication and division.
出处
《计算机工程与应用》
CSCD
北大核心
2005年第20期12-14,共3页
Computer Engineering and Applications
基金
国家自然科学基金重大研究计划支持(编号:90104005)
关键词
安全性
秘密同态
类模运算
同态加密机制
security,private homomorphism,similar modul,Homomorphic Encryption Scheme
