一种指定接收人的代理签名方案

为了保护原始签名人的权益,提出了一种限制代理签名权利的代理签名方案.在代理授权的过程中,原始签名人通过Schnorr签名方案指定代理签名的接收人,代理签名人在验证原始签名人所提供的授权参数合法的基础上产生用于代理签名的密钥,并通过指定接收人的签名方案产生代理签名.对所提出的代理签名方案的安全进行了分析,结果表明,所提出的签名方案不仅满足代理签名方案的基本安全要求,而且保证代理签名人只能对所指定的签名接收人产生代表原始签名人的有效代理签名,从而防止了代理签名权利的滥用.

Designated-receiver proxy signature scheme

To avoid the misuse of proxy signing power, a restricted proxy signature scheme was proposed to protect the original signer's interests. In this scheme, the original signer nominates a receiver of proxy signature through Schnorr signature during the generation process of delegation parameters. When he delegates his signing power to a proxy signer, the proxy signer generates proxy signature on behalf of him by the nominative signature scheme. Analysis of the security of the proposed scheme shows that it satisfies the basic security requirements of proxy signature, and that the valid proxy signature generated by the proxy signer on behalf of the original signer can only be verified and thus accepted by the receiver nominated by the original signer.