NIST Invites Comments on GCM and GMAC Revision Draft
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🔗 NIST seeks public input on revising Galois/Counter Mode (GCM) for enhanced performance. In a recent announcement, the National Institute of Standards and Technology (NIST) expressed its intention to revise Special Publication 800-38D, focusing on GCM and GMAC. NIST is soliciting feedback on two proposed approaches: adapting GCM for a 256-bit block cipher and endorsing a nonce-key generation method to improve throughput. The current GCM design limits invocations to 2^32, which poses challenges for applications requiring numerous invocations. NIST aims to address these limitations and is inviting comments until March 14, 2025, to inform the development of more robust cryptographic standards.
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