HKDF Key Deriver

Derive keys from high-entropy material using HKDF.

IKM (input keying material, hex) Salt (hex, optional) Info (hex, optional)

Hash Output bytes

About this tool

HKDF (RFC 5869) extracts and expands a uniformly-random key from already-strong input keying material. Use it after ECDH / shared-secret negotiation, NOT for password hashing.