标准模型下高效的基于身份可净化签名方案

Efficient Identity-based Sanitizable Signature Scheme in Standard Model

可净化签名方案中,净化者能够修改原消息的特定部分,不必与签名者交互就能生成修改消息的有效签名。利用双线性对,基于Waters技术和Li技术,提出一个标准模型下安全的基于身份可净化签名方案。安全性分析表明,所提方案能够满足不可伪造性、不可区分性和不可变性。和现有标准模型下安全方案相比,该方案计算效率高、通信代价小。

Sanitizable signature scheme allows stanitizer to modify the specific part of the original message without in- teracting with the signer to generate a valid signature to modify the message. This paper came up with an identity-based sanitizable signature scheme design based on Waters technology and Li technology under the standard model with the application of bilinear pairings. The salty analysis shows that the proposed scheme is able to satisfy the characteristics of unforgeability~ indistinguishability and immutability. Compared with the the existing salty scheme under the standard model, this design has higher computational dficiency and smaller communication cost.