The legislative principle adopted by China's Electronic Signature Law is to standardize the behavior of electronic signature, establish the legal effect of electronic signature and safeguard the legitimate rights and interests of all parties concerned.

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.

Generally speaking, electronic signature is an electronic signature of electronic documents through cryptographic technology, which is not a digital visualization of written signature, but similar to handwritten signature or seal, and can also be said to be an electronic seal.

The purpose of electronic signature is to sign the electronic version of Mid-Autumn Festival greeting cards, invitations and construction contracts.