关键词: 基于身份, 代理签名, 前向安全

Abstract: With proxy signature, an original signer can delegate his signing authority to a proxy signer who can sign a message on behalf of the original one. Forward secure signature can solve the security problem of secret disclosure. There are only a few ID-based forward secure proxy signatures which need to be improved in efficiency. Combined with proxy signature and forward security, an efficient identity-based forward secure proxy signature scheme is proposed by using bilinear pairings. It shows that the proposed scheme’s efficiency is better than that of some existing ones under the condition of keeping the all kinds of security characteristics of forward security proxy signature, so is more propitious to applications in society.

Key words: identity-based, proxy signature, forward security