In cryptography, a cipher block chaining message authentication code (CBC-MAC) is a technique for constructing a message authentication code (MAC) from a block cipher.

In this lecture, we will explore Cipher Block Chaining - Message Authentication Code (CBC-MAC) which is a standardized MAC widely used in practice. We will see construction of a basic version of CBC-MAC which is secure when authenticating messages of any xed length.

CBC-MAC or cipher block chaining message authentication code is a well known method to generate message authentication code. Unfortunately, it is not forgery secure over arbitrary domain. There are several secure variants of CBC-MAC among which OMAC (or one-key CBC-MAC) is a widely used candidate.

Counter with cipher block chaining message authentication code (counter with CBC-MAC; CCM) is an authenticated encryption algorithm designed to provide both authentication and confidentiality.

The basic Cipher Block Chaining MAC algorithm (CBC-MAC) has security deficiencies [9]. The core of the CMAC algorithm is a variation of CBC-MAC that Black and Rogaway proposed and analyzed under the name XCBC in Ref. [2] and submitted to NIST in Ref. [1].

Mar 10, 2023 · CBC-MAC (Cipher Block Chaining Message Authentication Code) is a type of message authentication code that provides integrity and authenticity of messages. It is based on the Cipher Block Chaining (CBC) mode of operation of a block cipher.

Today’s Summary Today we shall construct MACs using pseudorandom function (PRF) family and the Cipher Block Chaining (CBC) technique

CBC-MAC is a MAC algorithm based on the Cipher Block Chaining (CBC) mode of a block cipher. In the CBC mode, the previous ciphertext is xored to the plaintext block before the block cipher is applied. The MAC value is derived from the last ciphertext block.

Comments about specific definitions should be sent to the authors of the linked Source publication. For NIST publications, an email is usually found within the document. Comments about the glossary's presentation and functionality should be …

With CBC (Cipher Block Chaining)-MAC (Message Authentication Code) we authenticate messages with a secret shared key. If Bob wants to send some text to Al-ice, he encrypts it with a shared key and then sends Alice the message digest (or hash of the message) of this.