The password of the tax control panel * * * has five chances, and the default is eight eight. As long as the user has not modified it, it is all eight eights. The tax filing tray password is the same as the tax control tray password, and the default is 8 8.
Digital certificates must also be unique and reliable. In order to achieve this goal, many technologies need to be adopted. Usually, digital certificates adopt 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.