强安全无证书可验证加密签名方案

A Strong Secure Certificateless Verifiably Encrypted Signature Scheme

基于无证书的数字签名体制克服了基于身份密码系统固有的密钥托管问题,其完整的私钥由用户和可信第三方共同产生.可验证加密签名是对普通签名的一个扩展,是用一个指定的公钥去加密一个签名,并随后证明密文中确实包含一个签名,广泛应用于在线合约签署.本文将Chen等[1]提出的基于无证书签名方案与可验证加密签名的优点相结合,构造了一个强安全无证书可验证加密签名方案.

Certificateless signature schemes were introduced to solve the inherent key escrow problem of identity-based cryptography. Its full private key is determined by neither the user nor the trusted third party. Verifiably encrypted signature is the signature of a general expansion, provides a way to encrypt a signature under a designated public key and subsequently proves that the resulting eiphertext indeed contains such a signature, is widely used in contract signing online. In this paper, we combined the advantages of the certificateless signature scheme proposed by Chen et al. And verifiably encrypted signature, constructed a strong secure certifieateless verifiably encrypted signature scheme.