盲代理签名是指原始签名人不能直接根据代理签名辨认出代理签名人身份的代理签名方案.本文首次将前向安全的数学思想引入到盲代理签名体制,提出了前向安全的盲代理签名方案.新方案能实现即使代理签名人的盲代理签名密钥被泄露,密钥泄露前所产生的代理签名依然有效.同时通过引入时效参数,新方案可以对盲代理签名的有效时间进行控制.
The properties of blind proxy signature scheme are that the original signer can not identify the proxy signer through a proxy signature and the proxy signer can blindly sign a message. This paper pro- posed a forward secure blind proxy signature scheme combining the concept of forward security with blind proxy signature in the first time. This means' even if an adversary has gotten the current blind proxy sign- ers' key. It could not forge proxy signature pertaining to the past, that is, previous generated blind proxy signatures remain still valid. Furthermore, the scheme can control the proxy signature time of the proxy blind singer.