![]() A key generation algorithm selects a key from the key space uniformly at random.Informally, a message authentication code system consists of three algorithms: ![]() RFC 4949 recommends avoiding the term message integrity code (MIC), and instead using checksum, error detection code, hash, keyed hash, message authentication code, or protected checksum. However, some authors use MIC to refer to a message digest, which aims only to uniquely but opaquely identify a single message. The term message integrity code (MIC) is frequently substituted for the term MAC, especially in communications to distinguish it from the use of the latter as media access control address ( MAC address).
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