PBKDF2-HMAC

This is PBKDF2 as described by PKCS#5/RFC2898 with HMAC as the PRF.

Functions

void cf_pbkdf2_hmac(const uint8_t *pw, size_t npw, const uint8_t *salt, size_t nsalt, uint32_t iterations, uint8_t *out, size_t nout, const cf_chash *hash)

This computes PBKDF2-HMAC with the given hash functon.

Parameters:

• pw – password input buffer.
• npw – password length.
• salt – salt input buffer.
• nsalt – salt length.
• iterations – non-zero iteration count. Tune this for performance/security tradeoff.
• out – key material output buffer. nout bytes are written here.
• nout – key material length.
• hash – hash function description.