Class __builtin.Nettle.Hash()->HKDF
- Description
HMAC-based Extract-and-Expand Key Derivation Function, HKDF, RFC 5869. This is very similar to pbkdf2, with a few important differences. HKDF can use an "info" string that binds a generated password to a specific use or application (e.g. port number or cipher suite). It does not however support multiple rounds of hashing to add computational cost to brute force attacks.