保护代理签名人隐私的指定验证人代理签名方案

为了综合考虑原始签名人和代理签名人的利益，防止代理签名权利的滥用，同时保护代理签名人隐私，应用别名技术和指定验证人代理签名思想，提出了一种保护代理签名人隐私的指定验证人代理签名方案．在该方案中，代理签名人的身份除对原始签名人外是保密的，代理签名人代表原始签名人产生指定验证人签名，只有指定验证人可以验证代理签名的有效性，但指定验证人无法确定代理签名人的身份，只有在发生争议时，指定验证人可以通过原始签名人揭示代理签名人的真实身份．

A Designated-verifier Proxy Signature Scheme with Proxy Signer Privacy Protection

In order to protect advantages of the original signer and the proxy signer, a designated-verifier proxy signature scheme with proxy signer privacy protection is proposed by applying the concept of alias to the designated-verifier proxy signature in this paper. On the one hand, the scheme can protect the proxy signer＇ s privacy against the other third parties except the original signer, On the other hand, the proxy signer can generate the designated-verifier proxy signature on behalf of the original signer, only the designated-verifier can validate the proxy signature, but the designated-verifier cannot confirm the identity of the proxy signer, the designated-verifier can reveal the real identity of the proxy signer with the help of the original signer when the disputation happens.