Please show step by step how to derive the decryption formul

Please show step by step how to derive the decryption formulas for the CTR blocking mode

Solution

What is CTR Mode:-CTR mode (CM) is also known as integer counter mode (ICM) and segmented integer counter (SIC) mode. It generates the next key stream block by encrypting successive values of a \"counter\".

A mode of operation is an algorithm that uses a block cipher to encrypt messages of arbitrary length in a way that provides confidentiality or authenticity. A block cipher by itself is only suitable for the secure cryptographic transformation (encryption or decryption) of one fixed-length group of bits called a block.

Steps to Encrypt and the CTR blocking mode:-

Thank You for using Chegg...