前向安全的群签名方案

Forward-secure Group Signature

将前向安全的思想结合到基于BLS短签名的群签名方案中,构造出前向安全的群签名方案。方案不但满足普通群签名所具有的不可伪造性、匿名性和可跟踪性等一般的安全性要求,还满足了前向安全性,降低了密钥泄露带来的危害。方案采取的前向安全技术没有周期数的限制,可以无限时间周期的进行密钥更新,提高了签名方案的实用性。

A forward secure group signature scheme is proposed by combining the forward security idea with the group signature scheme based on BLS short signature.The scheme not only satisfies the general security requirements such as unforgeability,anonymity and traceability,but also satisfies the forward security and reduces the harm caused by key exposure.At the same time,the forward security technology adopted in the scheme is not limited by the number of cycles,and can be renewed for an infinite period of time,thus improving the practicability of the signature scheme.