中文摘要：

针对DLP问题代理盲签名方案不满足不可伪造性和不可链接性的缺陷,文章提出一个改进的代理盲签名方案。方案在盲签名阶段引入了代理签名者的私钥,能够抵御原始签名者的伪造攻击。同时改进了消息盲化过程,避免了代理签名者的链接性攻击。分析结果表明,改进后的代理盲签名方案具有更高的安全性。

英文摘要：

The proxy blind signature scheme based on DLP problem can not satisfy the requirement of unforgeability and unlinkability.To solve these problems,an improved proxy blind signature scheme is put forward.The proxy signer＇s private key is introduced in the blind signature stage,which can resist the original signer＇s forgery attack.At the same time,the message blinding process is improved,which can avoid the proxy signer＇s linkability attack.The analysis results show that the improved proxy blind signature scheme is more secure.