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针对移动代理在异质网络环境中的安全问题,提出一种基于加乘同态与组合函数加密策略的MA保护方案,同态思想应用于移动密码学中,不用解密即可使加密任务代理在其它网络平台上运行.该方案在同态的基础上引入了加乘同态加密策略,采用了加乘同态加密三地址码操作数,组合函数加密三地址码操作码的加密步骤,并在加密后排除了由加乘同态与组合函数引起的双重加密问题.最后给出了该方案的正确性及安全性验证.实验结果表明:对比同态加密方法,该方案节省执行时间5.12秒,并能及时侦测出恶意主机.
Aiming at the security problem of mobile agent in heterogeneous network environment, an MA protection scheme based on additive multiplication homomorphism and combinatorial function encryption strategy is proposed. The homomorphism is applied to mobile cryptography. Without decryption, Other network platform.This scheme introduces the multiplicative homomorphism encryption strategy based on the homomorphism, adopts the encryption and multiplication homomorphism encryption three address code operand, the combination function encryption three address code operation code encryption step, and in Encryption eliminates the double encryption problem caused by multiplicative homomorphism and combinatorial functions.Finally, the correctness and security verification of this scheme are given.The experimental results show that compared with the homomorphic encryption method, the scheme saves 5.12 seconds of execution time, And timely detection of malicious host.