Message Authentication Code.
Source(s):
NIST SP 800-108
NIST SP 800-185
A means of restricting access to system resources based on the sensitivity (as represented by a label) of the information contained in the system resource and the formal authorization (i.e., clearance) of users to access information of such sensitivity.
Source(s):
NIST SP 800-44 Version 2
under Mandatory Access Control
A hardware address that uniquely identifies each component of an IEEE 802-based network. On networks that do not conform to the IEEE 802 standards but do conform to the OSI Reference Model, the node address is called the Data Link Control (DLC) address.
Source(s):
NIST SP 800-18 Rev. 1
under Media Access Control Address
A cryptographic checksum on data that uses a symmetric key to detect both accidental and intentional modifications of the data.
Source(s):
NISTIR 7711
under Message Authentication Code