Electronic seal is a form of electronic signature. According to the law, the electronic seal must be exclusive to the signer and controlled by the signer himself at the time of signing. Once the electronic seal and the signed document are altered It will be discovered immediately afterwards, so as to ensure the legal validity of the electronic seal. And this is essentially the same as a traditional signature or seal.

However, unlike traditional signatures or seals, the implementation methods are different. It is difficult for electronic signatures or seals to prove the above points in terms of visual expression, so they must be achieved through technical means.

It is difficult for individuals and ordinary enterprises to do this, but qualified third-party electronic signature platforms will use a variety of technologies to ensure the legal effectiveness of the electronic signatures produced.

The common technologies implemented by third-party electronic signature platforms are:

1. Real-name authentication technology: Cooperate with authoritative CA institutions to provide users with CA certificates and connect to the Ministry of Public Security The eID authentication system confirms the authenticity of the user's identity;

2. Anti-tampering technology: The international hash value technology is used to solidify the original electronic file data, which can easily identify whether the file has been tampered with;

< p>3. Third-party time retrieval technology: Using advanced third-party time retrieval technology, the signing time can be accurately recorded;

In terms of ensuring the legal effectiveness of electronic signatures, third-party electronic signature platforms should have Several qualifications: Ministry of Public Security Information Security Level 3 or higher certification, Trusted Cloud Service Certification from the Ministry of Industry and Information Technology, and ISO27001 certification.

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