💡HKDF expands key material; it is not a password hasher by itself.
About HKDF
HKDF is a standard for deriving strong keys from initial keying material using HMAC as a PRF. It is commonly used to expand shared secrets into multiple keys.
HKDF online HMAC-based key derivation (in-browser, no upload)
FAQs
What does HKDF do?
It extracts and expands key material using HMAC, turning a shared secret into strong keys.
Is HKDF a password hasher?
No. Use bcrypt/scrypt/Argon2 for password hashing; HKDF is for key expansion.
Does this tool upload my data?
No. HKDF derivation runs entirely in your browser.