Galois/Counter Mode (GCM)

GCM is an AEAD mode that provides confidentiality and integrity via counter‑mode encryption and a Galois‑field MAC.

#crypto#aead#nist

Last updated: 2025-09-02T00:00:00.000Z

Evidence

NIST SP 800-38D Normative evidence
csrc.nist.gov

More context

Strict nonce uniqueness is critical; reuse catastrophically compromises confidentiality and integrity.