Encryption Algorithms are process plain-text in the following ways:
- block cipher is a method of encrypting text (to produce cipher-text) in which a cryptographic key and algorithm are applied to a block of data (for example, 64 contiguous bits) at once as a group rather than to one bit at a time
- stream cipher is a symmetric key cipher where plaintext digits are combined with a pseudorandom cipher digit stream (key-stream)
Block Cipher and Stream Cipher - Algorithms
refer to: Encryption - Algorithms