一种基于自证明公钥的可公开验证的认证加密方案

针对现有的基于证书的认证加密方案通信量和计算量大的缺点,提出了基于自证明公钥的可公开验证的认证加密方案。详细阐述了方案的系统初始化、签名生成、消息恢复验证以及公开验证4个阶段,方案的安全性是基于求解离散对数的困难性(DLP)和强单向hash函数(OWFH)的不可逆。该方案在没有签名者的协作下,任何验证者都可验证签名者的诚实性,在验证签名的同时可认证签名者的公钥,因而减少了存储空间、通信量和计算量。

A Publicly Verifiable Authenticated Encryption Based on Self-certified Public Keys

Aiming at drawbacks of larger communication quantity and computation quantity in authenticated encryption scheme that is used today based on certificate, a publicly verifiable authenticated encryption based on self-certified public keys is proposed in this paper. The four phases of system initialization, signature generation, message recovery verification and public verification are discussed in detail. The security of the scheme is based on solving the discrete logarithm problem (DLP) and the intractability of reversing the one-way hash function (OWHF). Any verifier can prove the honesty of the signer without the cooperation of the signer, and the public keys of the signer can be authenticated during signature being verified. Thus the memory, communication quantity and computation quantity are greatly decreased.