MIMICRY DEFENSE DECISION METHOD AND SYSTEM BASED ON PARTIAL HOMOMORPHIC ENCRYPTION ALGORITHM

摘要

Disclosed in the present invention are a mimicry defense decision method and system based on a partial homomorphic encryption algorithm. The decision method comprises allocating a random number and an encryption key for a heterogeneous execution body; and outputting a ciphertext by means of an execution module, wherein a decision object is the ciphertext of an execution result that is obtained by using an appointed algorithm, and has a feedback system facilitating verification and having good confidentiality. The system comprises a policy scheduling module, an execution module, a multi-mode and policy voting module, and an isomer set; the policy scheduling module is provided with a random number generating module; the execution module is provided with a homomorphic encryption module. The method and system of the present invention can reduce replay attack or avoid a decision mode from suffering from replay attack and the like in a multi-mode/policy voting system, thereby achieving the purposes of protecting user privacy, preventing data leakage, and improving the security and stability of a whole mimicry defense system.