Electronic signature refers to the data contained in the data message in electronic form and accompanied by data used to identify the identity of the signer and show that the signer approves its content.
Digital signature is an application technology of electronic signature. The most widely used electronic signature technology in the world is digital signature technology. The digital certificate in digital signature technology can be used to make data messages, and the certificate can only be used if it is bound to a specific subject.
It can be said that digital signature is a safe and reliable way to realize electronic signature on the technical level. The integrity of the digital signature file is easy to verify (no need for sewing stamps, sewing signatures or handwriting experts), and the digital signature is undeniable (no need for handwriting experts to verify). Application of asymmetric key encryption technology and digital digest technology.