In symmetric encryption there is only one key and all communicating parties use the same secret key for both encryption and decryption. Today there are two types of cryptography that get used often. First up we have symmetric cryptography.
Z k 1 z k f z k f 0 z k k 0 1 2.
In symmetric encryption there is only one key and all communicating parties use the same secret key for both encryption and decryption. Symmetric key algorithms are a fast way to securely encrypt data using a shared secret. The former is symmetric encryption while the latter is called asymmetric encryption. An encryption algorithm is a formula or procedure that converts a plaintext message into an encrypted ciphertext.