Research On Round-optimal Blind Signature Scheme

In recent years,the field of information security has developed rapidly,and the importance of information security has also become more prominent.Digital signature in cryptography can provide integrity and non repudiation of information.It is the key technology of protection information security,and blind signature as a special digital signature is particularly important in practical applications.The anonymity of blind signature makes it widely used in network communication.Therefore,the research of more secure and practical blind signature plays an important role in the protection of information security.Focuses on the blind signature scheme,this paper mainly research as follows :1.Using the modular design method,a highly efficient and achievement blind signature scheme based on Structure-Preserving signature was designed by combination of Structure-Preserving signature and blind signature.On the basis of satisfying the general security requirements of blind signature,the scheme can simultaneously sign a large number of messages,and have a short verification key and signature,and also realize the Round-Optimal.Secondly,the SPBS algorithm is implemented by using JPBC library.The results show that the signature has good practical value.2.This paper proposes an ID-Based blind signature scheme(OP-IDBS)without random oracle model.The scheme is based on the E-LRSW security assumption,and outputs a standard CL signature.Security certification and performance analysis show that the scheme meets the general security needs and has high efficiency.Secondly,combining different functions of digital signature,a designated verifier blind signature(MR-DV-IDBS)with message recovery functionbased on ID-based is proposed.The scheme satisfies the security requirements such as blindness,unforgeability and message recoverability.And the above two schemes achieve Round-Optimal.3.Based on the OP-IDBS scheme proposed in this paper,we construct an anonymous electronic voting scheme.The scheme satisfies the security requirement of general electronic voting scheme and has high efficiency.Secondly,based on the MR-DVIDBS scheme in this paper,a cross-domain authentication scheme under cloud computing environment is implemented.The scheme takes advantage of blind signature and designated verifier to solve the known security issues in the current Open ID scheme.