Can we use a block cipher to build a hash function or MAC?
Saturday, 10 August 2024 by Emmanuel Udofia
Certainly, the use of block ciphers to construct hash functions and Message Authentication Codes (MACs) is a well-established practice in the field of cryptography. A block cipher is a symmetric key cipher that operates on fixed-size blocks of data using a shared secret key. Examples of block ciphers include the Advanced Encryption Standard (AES) and
Can a MAC be built by block ciphers?
Monday, 05 August 2024 by Emmanuel Udofia
A Message Authentication Code (MAC) can indeed be constructed using block ciphers. A MAC is a cryptographic checksum that provides integrity and authenticity assurances on a message. It ensures that the message has not been altered and that it originates from a legitimate sender who possesses the secret key. Block ciphers, which are deterministic algorithms