Digital signature system and signature method based on certificate

Abstract

The invention discloses a digital signature system based on a certificate, which comprises a system parameter setting module, a user secret key generation module, a user certificate authentication module, a signature module and a checking module. The system parameter setting module generates system main secret key and system public parameter which is transmitted to other modules. The user secret key generation module generates public key and private key pairs of all users. The user certificate authentication module conducts signature on identification and public key of a user, generates the certificate of the user and transmits the certificate to the signature module. The signature module conducts signature on information and transmits the information to the checking module. The checking module checks effectiveness of the signature generated by the signature module. The system has small calculation cost and communication cost on the premise that safety is ensured, improves system operation efficiency, and is capable of reducing calculation cost and communication cost based on a digital signature method of the certificate, and improves operation efficiency of the digital signature method based on the certificate. The digital signature method based on the certificate is further disclosed.

Description

technical field [0001] The invention relates to a digital signature technology for network security, in particular to a safe and efficient certificate-based digital signature system and digital signature method. Background technique [0002] With the rapid development of computer network and communication technology, human beings have gradually entered the information society, and digitalization and networking will become the new basic platform for global informationization. In the process of social informatization, the development of the Internet has greatly facilitated people's study, work and life, and computer applications have penetrated into various fields of society such as politics, economy, military, science, culture and family life. Unknowingly, information has become the most important resource and wealth, but because information transmission, storage, and processing are often carried out on an open communication network, information is vulnerable to eavesdropping...

AI Technical Summary

Problems solved by technology

Although the research on certificate-based digital signature schemes has progressed, the current certificate-based digital signature methods have more or less problems and deficiencies in terms of security strength and operating efficiency.

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