gnutls_hkdf_expand - Man Page

API function

Synopsis

#include <gnutls/crypto.h>

int gnutls_hkdf_expand(gnutls_mac_algorithm_t mac, const gnutls_datum_t * key, const gnutls_datum_t * info, void * output, size_t length);

Arguments

gnutls_mac_algorithm_t mac

the mac algorithm used internally

const gnutls_datum_t * key

the pseudorandom key created with HKDF-Extract

const gnutls_datum_t * info

the optional informational data

void * output

the output value of the expand operation

size_t length

the desired length of the output key

Description

This function will derive a variable length keying material from the pseudorandom key using the HKDF-Expand function as defined in RFC 5869.

Returns

Zero or a negative error code on error.

Since

3.6.13

Reporting Bugs

Report bugs to <bugs@gnutls.org>.
Home page: https://www.gnutls.org

See Also

The full documentation for gnutls is maintained as a Texinfo manual. If the /usr/share/doc/gnutls/ directory does not contain the HTML form visit

https://www.gnutls.org/manual/

Info

3.7.2 gnutls