一种基于25519椭圆曲线的无证书公钥密码签名方法

• Format: Patent
• Language: Chinese
• Published: 10.05.2022
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

本发明公开了一种基于25519椭圆曲线的无证书公钥密码签名方法，包括系统建立、用户秘密建立、用户部分私钥提取、用户私钥建立、用户公钥还原、消息签名和验证的方法，用于结合25519曲线，进行无证书的数字签名操作。本发明有效避免了证书使用问题，能够实现用户标识与公钥的绑定。本发明具有计算效率高、安全性强等特点，可根据使用业务场景设置不同系统参数实现具备不同安全特性的无证书公钥密码签名体制。 The invention discloses a certificateless public key cryptographic signature method based on a 25519 elliptic curve, which comprises a system establishment method, a user secret establishment method,a user partial private key extraction method, a user private key establishment method, a user public key restoration method, a message signature method and a verification method, and is used for carrying out certificateless digital signature operation in combination with the 25519 elliptic curve. According to the invention, the certificate use problem is effectively avoided, and the binding of theuser identifier and the public key can be realized. The method has the advantages of being high in calculation efficiency, high in safety and the like, and different system parameters can be set according to service scenes to achi