Study on Proxy Signature Schemes with Bionic Optimization

摘要

In the paper, we presented an improved proxy signature scheme with adaptive optimization based on ECC (Elliptic Curves Cryptosystem). The systematic optimization of secret parameters with bionic evolution renders effective protection for the secrecy of proxy signer and avoids the indefiniteness in proxy signature analyzing. The optimization and blinding algorithms diminish the relevance of different parameters and signatures from the same proxy signer. The dishonest signers or outer adversaries can not attack the signature system with effective polynomial algorithms. The optimization algorithm can be executed in advance without excess system overheads, and the cytological algorithms of the scheme take great advantage of the superiority of ECC, such as high efficiency, short key length and etc. The optimized scheme reinforces the security and stability of proxy signature and effectively improves the efficiency of proxy signature for engineering application. Thus it proves to be applicable to integrated environment with restricted computation ability and limited bandwidth yet requiring for high-speed operation.