摘要
Abstract
The security analysis is proceeded by certificateless aggregation signature scheme,which can′t resist forgeable attack under TypeⅡ. To solve the problem,an improved scheme is proposed. Parameter combination mode is changed in the pro⁃cess of signature,the restrain of master key and public key is strengthened in aggregation signature verification. Security analy⁃sis shows that the scheme is unforgeable under attacking of adaptive selection message,base on difficult calculation of CDHP and random oracle model assumption. Efficiency analysis shows that in proceeding of signature and verification,the proposed scheme requires only 4 bilinear pairings calculation,the length of the signature is fixed,and the efficiency of certificateless ag⁃gregation signature scheme is higher than congener security schemes.关键词
无证书密码体制/聚合签名/双线性对/随机谕言模型Key words
certificateless cryptosystem/aggregation signature/bilinear pairing/random oracle model分类
信息技术与安全科学
