Definition ∞ An Information Theoretic MAC is a Message Authentication Code whose security relies on information theory rather than computational assumptions. This type of MAC offers unconditional security, meaning its protection holds true even against adversaries with unlimited computational power. It guarantees data authenticity and integrity against any attacker.
Context ∞ Information Theoretic MACs are relevant in highly secure cryptographic contexts, though less commonly discussed in mainstream crypto news compared to computationally secure primitives. Their presence in certain advanced protocols or secure communication channels within digital asset infrastructure signifies a very high level of security assurance. When mentioned, it often pertains to specialized applications demanding ultimate protection against data tampering.
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