Click the signature field marked with the signer's name and ID number on the PDF, click the signature in the pop-up dialog box, enter the password of the digital certificate, and click Save. The electronic signature is successful.
Key point 1: Public key and private key appear.
1. In order to meet the requirements of electronic contract content confidentiality and sender authentication, we know the encryption method of asymmetric encryption.
2. Asymmetric encryption: it has a pair of unique keys, a public key and a private key. The public key is visible to everyone, and the private key is only visible to itself.
3. The characteristic of asymmetric encryption is that files encrypted with public key can only be decrypted with private key, and files encrypted with private key can only be decrypted with public key.
4. When sending the contract, you will encrypt the proposed electronic contract with your private key; When you receive the contract, if you can decrypt it with your public key, it means that you sent this file. Key point 2: the government has given CA help.
It is reported that the government has authorized an authoritative organization named CA to provide network identity authentication services.
1, CA(Certificate Authority): the full name of the certification authority, that is, the application, issuance and management institution of digital certificates. Its main functions are: generating key pairs, generating digital certificates, distributing keys, managing keys, etc.
2. Digital certificate: a certificate issued by CA organization, which contains information such as public key, owner name of public key, digital signature of CA, expiration date, name of authorized center, serial number of certificate, etc. It can be popularly understood as the "network identity card" of an individual or enterprise.