1/*
2 * Copyright 2001-2019 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10/*-
11 * AES-NI support for AES GCM.
12 * This file is included by cipher_aes_gcm_hw.c
13 */
14
15static int aesni_gcm_initkey(PROV_GCM_CTX *ctx, const unsigned char *key,
16 size_t keylen)
17{
18 PROV_AES_GCM_CTX *actx = (PROV_AES_GCM_CTX *)ctx;
19 AES_KEY *ks = &actx->ks.ks;
20 GCM_HW_SET_KEY_CTR_FN(ks, aesni_set_encrypt_key, aesni_encrypt,
21 aesni_ctr32_encrypt_blocks);
22 return 1;
23}
24
25static const PROV_GCM_HW aesni_gcm = {
26 aesni_gcm_initkey,
27 gcm_setiv,
28 gcm_aad_update,
29 gcm_cipher_update,
30 gcm_cipher_final,
31 gcm_one_shot
32};
33
34const PROV_GCM_HW *PROV_AES_HW_gcm(size_t keybits)
35{
36 return AESNI_CAPABLE ? &aesni_gcm : &aes_gcm;
37}
38
39