摘要
首先,为赋予签名验证者不同的权限,基于椭圆曲线密码算法,提出了一种链式验证签名方案.只有经过链式验证授权组中的成员依次授权之后,签名验证者才能验证签名的有效性.然后,分析了所给签名方案的安全性,链式验证授权组中的任何一个成员都没有权利验证签名的有效性;同时,该方案可以方便地增加或删除链式验证授权者,并在链式验证授权者或签名验证者泄漏子秘密时,及时进行维护.最后,分析了所提方案的运算复杂度,证明所给方案具有较高的安全性和效率.
Based on elliptic curve cryptosystem, a new chain verification signature scheme is proposed, the verifier doesn＇t verify the validity of the signature until authorized in turn by members of the chain verification authorize group. Authorizers can be added or deleted conveniently. In addition, the proposed scheme can be protected in time when sub-secrets are leaked by verifiers or authorizers. Furthermore, the computing complexity of the proposed scheme is analyzed. It is more secure and efficient than that of discrete logarithm schemes.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2009年第3期42-45,共4页
Journal of Beijing University of Posts and Telecommunications
关键词
链式验证签名
椭圆曲线
运算复杂度
chain verification signature
elliptic curve
computing complexity
