Cryptography20825 marksModes of Block Cipher Encryptions
Explain any two modes of block cipher encryption.
Explain any two modes of block cipher encryption. [5]
A block cipher encrypts data in fixed-size blocks. When a message is longer than one block, a mode of operation defines how the cipher is applied repeatedly. Two important modes are described below. --- Definition: In ECB mode, the plaintext is divided into fixed-size blocks, and each block is en...