Digital certificate is unique and reliable, and adopts public key system, that is, a pair of matching keys are used for encryption and decryption. Each user sets a specific private key that only belongs to himself, and uses it to decrypt and sign; At the same time, a public key is set to be made public by myself and enjoyed by a group of users for encryption and signature verification. When sending confidential documents, the sender uses the public key of the receiver to encrypt the data, and the receiver uses its own private key to decrypt the data, so that the information can reach the destination safely and correctly. The encryption process is guaranteed to be irreversible by digital means, that is, only the private key can be used for decryption. Public key technology solves the management problem of key distribution. Users can disclose their public keys and keep their private keys.

Digital signature technology adopts one-way irreversible operation, which takes at least 654.38+0 million years to crack at the current computer speed, which is almost impossible. File transmission is displayed in garbled form, and others cannot read or tamper with it. Therefore, in a sense, using electronic documents and digital signatures is even safer than using signed and stamped written documents.

If you need to verify the authenticity of an electronic contract with an electronic signature, you can go to the electronic contract platform and upload the electronic contract for authenticity verification.