message authentication code


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message authentication code

[′mes·ij ȯ‚then·tə′kā·shən ‚kōd]
(computer science)
The encrypted personal identification code appended to the message transmitted to a computer; the message is accepted only if the decrypted code is recognized as valid by the computer. Abbreviated MAC.
References in periodicals archive ?
The first task is to obtain the message authentication code (MAC) of the plaintext that will be discussed in more details in Section 3.
Authentication of images using Hash Message Authentication Code (HMAC) is not totally new, but combining it with wavelet transformation for formulating reversible watermarking is.
The Federal Reserve has made significant resource investments in studying the use of message authentication codes for Fedwire.
2) Digest authentication based on HTTP protocol layer [15], and the mechanism generates a message authentication code by encrypting the user name and password to avoid the plaintext of the user name and password being directly transmitted between the server and client.
The expected overhead can be derived from a polynomial equation that has an auxiliary security header size and a message authentication code as a variable, and has a weighted (by usage frequency) value as a coefficient.
4 Gbps wirespeed performance for today's state-of-the-art strong security algorithms such as Triple Data Encryption Standard (3DES)-CBC, Hashed Message Authentication Code -- Secure Hash Algorithm (HMAC-SHA-1), and Hashed Message Authentication Code -- Message Digest (HMAC-MD5) IPSec processing.
Content integrity is provided via two Hashed Message Authentication Code (HMAC) algorithms.
The integrity algorithm, also based on the core KASUMI algorithm, computes a 32-bit Message Authentication Code (MAC) of a given input message using an integrity key.
Specifically designed for ATM applications and meeting the emerging needs for the migration to Triple-DES and the requirement for unique key per terminal, SmartATM is used inside the ATM to provide Triple-DES or DES-based PIN encryption and Message Authentication Code (MAC) functions for transactions.
The WebSafe II supports payments, certification authorities (certificate generation, verification and archiving), Message Authentication Code, digital signatures, PEM and EDI (Electronic Data Interchange).
Atalla employs a key architecture that includes hierarchal support for a wide variety of key types, such as: Key exchange key, data encryption (DES and RSA), PIN data, Message Authentication Code, digital signatures, and certificates.