关键词: 数字签名, 代理签名, 匿名性, 可跟踪性

Abstract:

A proxy signature scheme was presented with the properties of anonymity and traceability. After the proxy signature has been verified, only the signature from delegation of the original signer could be confirmed by the verifier. On the other hand, the identity of the proxy signer could not be known at the same time. In appearing of disputation, the verifier can reveal the real identity of the proxy signer with the help of the original signer. A trusted party isn't involved in the scheme.

Key words: digital signature, proxy signature, anonymity, traceability