HMAC-based Extract-and-Expand Key Derivation Function (HKDF) by Hugo Krawczyk and Pasi Eronen 2026-11-05
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RFC5869, Informational, May2010. Sections2.2–2.3 specify extraction and expansion; §3.2 describes context information. Authors’ Addresses verifies full names Hugo Krawczyk and Pasi Eronen.
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