Public key and private key (private key)

The public key and private key are a key pair (a public key and a private key) obtained through an algorithm, the public key is the part of the key pair, and the private key is a non-public part. Public keys are typically used to encrypt session keys, verify digital signatures, or encrypt data that can be decrypted with the corresponding private key. The key pairs obtained by this algorithm are guaranteed to be unique worldwide. With this key pair, if one of the keys is used to encrypt a piece of data, it must be decrypted with another key. For example, the public key to encrypt the data must be decrypted with the private key, if the private key encryption must also be decrypted with the public key, or decryption will not succeed.

Public key and private key (private key)