【摘要】 利用双线性对构造的数字签名具有安全性高、密钥长度短和实现快速等优点,为此通过双线性对构造一个指定验证者签名方案,给出其在招投标中的应用流程,通过理论分析证明该方案具有正确性、不可伪造性、不可否认性、不可传递性及签名源的隐匿性,并能防止招标公司为获得最低报价而采取的作弊行为。更多还原

【Abstract】 The digital signatures constructed by bilinear pairings have the advantages of higher security,short key size and high implementation speed This paper presents a new pairing based designated verifier signature scheme and through the theory analysis show that the scheme obtains the advantages of correctness,unforgeability,non-reputiation,non-transferable and signer-ambiguous.It can be applied in bidding and overcome the cheating of the bidding company to obtain the minimum quoting price.更多还原