This paper describes identity-based digital signature. On this basis, we introduce blind digital signature to propose a new identity-based blind digital signature scheme and analyze the performance between this new scheme and a previous one. Then we discuss the application of identity-based blind digital signature in the performance evaluation and design an online performance evaluation scheme.
Digital signature plays a more and more important role in e-commerce. The basic methods of digital signature are introduced and a digital signature scheme based on digital certificate is proposed in this paper. Digital certificate is generated after personal information is written. The effective data, RSA parameters and signature results are included in digital certificate. The related RSA parameters of private key certificate are encrypted by private key password. The digital digest is gotten through hash algorithm in this scheme. Digital signature is operated by using RSA parameters in private key certificate and the signature is verified by RSA parameters in public key certificate by verifier.
Improvement to Nyang-Song fast digital signature scheme