Digital signature is the application of asymmetric key encryption technology and digital digest technology. The purpose of electronic signature is to sign the electronic version of Mid-Autumn Festival greeting cards, invitations and construction contracts.

1. Electronic signature is to electronically sign an electronic document through cryptographic technology, instead of digitally imaging a written signature.

2. Digital signature is a common physical signature written on paper, but it is realized by using the technology in the field of public key encryption to identify digital information. A digital signature is a digital string, which can only be generated by the sender of the information, and others cannot forge it. This number string is also an effective proof of the authenticity of the information sent by the information sender.