Electronic signature is an application of electronic signature technology. Electronic signature is an online identity authentication system based on international PKI standards. A digital certificate is equivalent to an online ID card. It effectively authenticates online identity in the form of digital signature through third-party authoritative authentication, helping each subject to identify the other party's identity and show their own identity. It has the functions of authenticity and anti-denial.

Different from physical ID cards, digital certificates also have the characteristics of security, confidentiality and tamper resistance, which can effectively protect and securely transmit information transmitted by enterprises on the Internet.

The traditional signature mainly judges whether the stamped seal style is consistent with the original seal by visual comparison, so as to determine the authenticity of the signature.

The principle of electronic signature is much more complicated. Take our platform as an example. When signing an electronic contract, the key information on the electronic signature, such as the user's identity and seal information, will be injected into the contract file together with the signing time of the contract after the user authenticates by SMS verification code, face brushing and fingerprint. Later, you can know the authenticity of this contract by reading the signature information.