gcm-sm4-meta.c

   1 /* gcm-sm4-meta.c
   2
   3    Copyright (C) 2022 Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
   4
   5    This file is part of GNU Nettle.
   6
   7    GNU Nettle is free software: you can redistribute it and/or
   8    modify it under the terms of either:
   9
  10      * the GNU Lesser General Public License as published by the Free
  11        Software Foundation; either version 3 of the License, or (at your
  12        option) any later version.
  13
  14    or
  15
  16      * the GNU General Public License as published by the Free
  17        Software Foundation; either version 2 of the License, or (at your
  18        option) any later version.
  19
  20    or both in parallel, as here.
  21
  22    GNU Nettle is distributed in the hope that it will be useful,
  23    but WITHOUT ANY WARRANTY; without even the implied warranty of
  24    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  25    General Public License for more details.
  26
  27    You should have received copies of the GNU General Public License and
  28    the GNU Lesser General Public License along with this program.  If
  29    not, see http://www.gnu.org/licenses/.
  30 */
  31
  32 #if HAVE_CONFIG_H
  33 # include "config.h"
  34 #endif
  35
  36 #include <assert.h>
  37
  38 #include "nettle-meta.h"
  39
  40 #include "gcm.h"
  41
  42 static nettle_set_key_func gcm_sm4_set_nonce_wrapper;
  43 static void
  44 gcm_sm4_set_nonce_wrapper (void *ctx, const uint8_t *nonce)
  45 {
  46   gcm_sm4_set_iv (ctx, GCM_IV_SIZE, nonce);
  47 }
  48
  49 const struct nettle_aead nettle_gcm_sm4 =
  50   { "gcm_sm4", sizeof(struct gcm_sm4_ctx),
  51     GCM_BLOCK_SIZE, SM4_KEY_SIZE,
  52     GCM_IV_SIZE, GCM_DIGEST_SIZE,
  53     (nettle_set_key_func *) gcm_sm4_set_key,
  54     (nettle_set_key_func *) gcm_sm4_set_key,
  55     gcm_sm4_set_nonce_wrapper,
  56     (nettle_hash_update_func *) gcm_sm4_update,
  57     (nettle_crypt_func *) gcm_sm4_encrypt,
  58     (nettle_crypt_func *) gcm_sm4_decrypt,
  59     (nettle_hash_digest_func *) gcm_sm4_digest,
  60   };