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数字签名是一种鉴别手段 ,其作用如同通常的手写签名。数字签名必须依赖于消息本身和签名人 ,容易产生 ,容易验证 ,且能对抗伪造和抵赖。数字签名方案应包括产生消息的方法、验证签名的方法、解决争辨的办法。本文阐述和讨论了数字签名的基本概念和 RSA签名方案 ,Elgamal签名方案以及数字签名标准——一种广泛采用的数字签名方案
Digital signature is a means of authentication that acts like a normal handwritten signature. Digital signatures must rely on the message itself and the signer, easy to generate, easy to verify, and can counterfeit and deny. The digital signature scheme should include a method of generating a message, a method of verifying a signature, and a solution to a dispute. This article describes and discusses the basic concepts of digital signatures and RSA signature schemes, Elgamal signature schemes, and digital signature standards - a widely adopted digital signature scheme