About this document
Message Authentication Techniques Explained by Bijayananda Panda is a document available to read on EtoBox.
Message authentication can be achieved using message encryption, message authentication codes (MACs), or hash functions. MACs are preferred over encryption alone as they provide authentication without secrecy. A MAC is a cryptographic checksum generated using a secret key from the message. Hash functions condense messages into fixed-length hashes but are not keyed like MACs. Both MACs and hash functions need to be at least 128 bits to be secure against brute force and cryptanalytic attacks.
- Author
- Bijayananda Panda
- Language
- EN