gnutls_hkdf_extract(3) gnutls gnutls_hkdf_extract(3)

gnutls_hkdf_extract - API function

#include <gnutls/crypto.h>

int gnutls_hkdf_extract(gnutls_mac_algorithm_t mac, const gnutls_datum_t * key, const gnutls_datum_t * salt, void * output);

the mac algorithm used internally
the initial keying material
the optional salt
the output value of the extract operation

This function will derive a fixed-size key using the HKDF-Extract function as defined in RFC 5869.

Zero or a negative error code on error.


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3.8.5 gnutls