Abstract: This paper proposes a threshold multi-proxy blind multi-signature scheme based on elliptic curve by adopting threshold cryptography and blind signature scheme. The scheme solves how to generate blind signature while multiple proxy signers sign the message on behalf of multiple original signers. In order to improve the flexibility and practicality of the scheme, some original signers can cooperatively delegate their signing capability to proxy signers and some proxy signers can cooperatively generate the signature by adopting to verifiable secret sharing in the scheme. By analyzing the scheme, it concludes that the scheme has many security properties, such as blindness, untraceability, unforgeability etc..

Key words: elliptic curve, blind signature, proxy signature, threshold multi-proxy blind multi-signature

摘要： 基于椭圆曲线密码体制，结合门限密码技术和盲签名，提出门限多代理盲多签名方案。解决多个代理签名者代表多个原始签名者进行盲签名的问题。通过采用可验证秘密共享技术，实现有一定数量的原始签名者合作就能授权，有一定数量的代理签名者合作就能产生签名，提高方案的灵活性和实用性。该方案具有盲性、不可追踪性和不可伪造性等安全性质。

关键词: 椭圆曲线, 盲签名, 代理签名, 门限多代理盲多签名

CLC Number: 

• TP309