include/nettle/hkdf.h

0001 /* hkdf.h
0002
0003    TLS PRF code (RFC-5246, RFC-2246).
0004
0005    Copyright (C) 2017 Red Hat, Inc.
0006
0007    This file is part of GNU Nettle.
0008
0009    GNU Nettle is free software: you can redistribute it and/or
0010    modify it under the terms of either:
0011
0012      * the GNU Lesser General Public License as published by the Free
0013        Software Foundation; either version 3 of the License, or (at your
0014        option) any later version.
0015
0016    or
0017
0018      * the GNU General Public License as published by the Free
0019        Software Foundation; either version 2 of the License, or (at your
0020        option) any later version.
0021
0022    or both in parallel, as here.
0023
0024    GNU Nettle is distributed in the hope that it will be useful,
0025    but WITHOUT ANY WARRANTY; without even the implied warranty of
0026    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
0027    General Public License for more details.
0028
0029    You should have received copies of the GNU General Public License and
0030    the GNU Lesser General Public License along with this program.  If
0031    not, see http://www.gnu.org/licenses/.
0032 */
0033
0034 #ifndef NETTLE_HKDF_H_INCLUDED
0035 #define NETTLE_HKDF_H_INCLUDED
0036
0037 #include "nettle-types.h"
0038
0039 #ifdef __cplusplus
0040 extern "C" {
0041 #endif
0042
0043 /* Namespace mangling */
0044 #define hkdf_extract nettle_hkdf_extract
0045 #define hkdf_expand nettle_hkdf_expand
0046
0047 void
0048 hkdf_extract(void *mac_ctx,
0049          nettle_hash_update_func *update,
0050          nettle_hash_digest_func *digest,
0051          size_t digest_size,
0052          size_t secret_size, const uint8_t *secret,
0053          uint8_t *dst);
0054
0055 void
0056 hkdf_expand(void *mac_ctx,
0057         nettle_hash_update_func *update,
0058         nettle_hash_digest_func *digest,
0059         size_t digest_size,
0060         size_t info_size, const uint8_t *info,
0061         size_t length, uint8_t *dst);
0062
0063 #ifdef __cplusplus
0064 }
0065 #endif
0066
0067 #endif /* NETTLE_HKDF_H_INCLUDED */