基于身份的链式验证签名方案

为解决传统签名方案中验证者具有相同验证权限的问题，提出一个基于身份的链式验证签名方案。在该方案中，签名验证者要验证签名的有效性必须经过链式验证授权组中所有成员的依次授权，即使链式验证授权组中的所有成员合谋，也不能验证签名的有效性。该方案可以方便地增加或删除链式验证授权组中的成员，维护签名验证者和链式验证授权者的子秘密。

Identity-based Chain Verification Signature Scheme

In order to solve the problem in traditional signature scheme that all verifiers have the equal right to verify the signature, this paper proposes an identity-based chain verification signature scheme. In order to verify the validity of the signature, the verifier has to be authorized by all chain grantors in turn, and even all chain grantors conspire, they can not verify the validity of the signature. In the scheme, it is easy to add or delete the chain grantor and defend the secret keys of the chain grantors and signature verifier.