Electronic signature: a form of electronic signature. Generally speaking, electronic signature includes signature and seal, and seal is a form of electronic signature. It uses image processing technology to transform the electronic signature operation into the same visual effect as the stamping operation of paper documents, and at the same time uses electronic signature technology to ensure the authenticity and integrity of electronic information and the undeniable nature of the signer.

Therefore, the electronic signature is actually a "digital operation", and the validity of the electronic signature can only be verified by verifying the integrity of the digital certificate. Compared with the problem that it is inconvenient to verify the authenticity in the form of off-line signature or seal, the electronic signature mode can improve the rapid signature verification and the contract security prevention ability.