It’s a hash-based message authentication code (HMAC) with the time-dependent counter as the message. A HMAC essentially appends a message to your secret key and hashes them together, ...

A generic collision that could defeat channel binding would require 2^48 keyed-hash message authentication code (HMAC) computations, the researchers found.

Allowed input message length is up to 2 64 - 1 bit. The core is fully configurable, which significantly reduces design time. – Native support of the SHA2-256 HMAC (keyed-Hash Message Authentication ...

It also natively supports the SHA2-512 HMAC (Keyed-Hash Message Authentication Code), a cryptographic mechanism defined in RFC 2104. This depends on the core settings. This IP is appropriate for ...

FIPS 198-compliant keyed-hash message authentication code (HMAC) TRNG with NIST SP 800-90B compliant entropy source; I2C communication is available up to 1MHz. Operation is over 2.2V to 3.63V and ...

The newly discovered vulnerability, dubbed "Blast-RADIUS," exploits weaknesses in the MD5 cryptographic hash function, ... an ad hoc message authentication code based on MD5.