diff options
Diffstat (limited to 'doc/functions/gnutls_hkdf_expand')
| -rw-r--r-- | doc/functions/gnutls_hkdf_expand | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/doc/functions/gnutls_hkdf_expand b/doc/functions/gnutls_hkdf_expand new file mode 100644 index 0000000..329cf1c --- /dev/null +++ b/doc/functions/gnutls_hkdf_expand @@ -0,0 +1,23 @@ + + + + +@deftypefun {int} {gnutls_hkdf_expand} (gnutls_mac_algorithm_t @var{mac}, const gnutls_datum_t * @var{key}, const gnutls_datum_t * @var{info}, void * @var{output}, size_t @var{length}) +@var{mac}: the mac algorithm used internally + +@var{key}: the pseudorandom key created with HKDF-Extract + +@var{info}: the optional informational data + +@var{output}: the output value of the expand operation + +@var{length}: the desired length of the output key + +This function will derive a variable length keying material from +the pseudorandom key using the HKDF-Expand function as defined in +RFC 5869. + +@strong{Returns:} Zero or a negative error code on error. + +@strong{Since:} 3.6.13 +@end deftypefun |