一种优化的代理多重数字签名方案

An Improved Proxy Multi-signature Scheme

在代理多重签名方案中,指定的代理签名者可以代表一组原始签名者生成签名.现有的基于离散对数的代理多重签名方案大多不能有效抵抗合谋攻击和伪造攻击.为了解决这些安全问题,提出了一种新的基于离散对数的代理多重签名优化方案.在优化方案中,用户的私钥和公钥通过托管中心与原始签名人之间的相互监督和验证生成,从而保证密钥的安全.此外,该方案还可以抵抗合谋攻击和伪造攻击.

In a proxy multi-signature scheme, the specified proxy signer can generate a signature on behalf of a group of original signers. Most of existing proxy multi-signature schemes based on discrete logarithm cannot effectively resist the collusion attack and forgery attack. In order to solve these security problems, a new proxy multi-signature scheme was proposed based on discrete logarithm. In the optimized scheme, both the user’s private key and public key are generated by the mutual supervision and verification between the escrow center and the original signer to ensure the security of the keys. In addition, the program also can resist conspiracy attacks and forgery attacks.