数字签名数字签名（又称公钥数字签名、电子签章）是一种类似写在纸上的普通的物理签名，但是使用了公钥加密领域的技术实现，用于鉴别数字信息的方法。一套数字签名通常定义两种互补的运算，一个用于签名，另一个用于验证。 英文解释： Digital signature (also called public keydigital signature, electronic signature) is a kind of similar to write on thepaper of ordinary physical signature, but the use of public key encryptiontechnology, method for identification of digital information. A digitalsignature is usually defined two complementary operation, one for thesignature, another for verification.