1/*
2 * Copyright 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 * Generic support for ARIA GCM.
12 */
13
14#include "cipher_aria_gcm.h"
15
16static int aria_gcm_initkey(PROV_GCM_CTX *ctx, const unsigned char *key,
17 size_t keylen)
18{
19 PROV_ARIA_GCM_CTX *actx = (PROV_ARIA_GCM_CTX *)ctx;
20 ARIA_KEY *ks = &actx->ks.ks;
21
22 GCM_HW_SET_KEY_CTR_FN(ks, aria_set_encrypt_key, aria_encrypt, NULL);
23 return 1;
24}
25
26static int aria_cipher_update(PROV_GCM_CTX *ctx, const unsigned char *in,
27 size_t len, unsigned char *out)
28{
29 if (ctx->enc) {
30 if (CRYPTO_gcm128_encrypt(&ctx->gcm, in, out, len))
31 return 0;
32 } else {
33 if (CRYPTO_gcm128_decrypt(&ctx->gcm, in, out, len))
34 return 0;
35 }
36 return 1;
37}
38
39static const PROV_GCM_HW aria_gcm = {
40 aria_gcm_initkey,
41 gcm_setiv,
42 gcm_aad_update,
43 aria_cipher_update,
44 gcm_cipher_final,
45 gcm_one_shot
46};
47const PROV_GCM_HW *PROV_ARIA_HW_gcm(size_t keybits)
48{
49 return &aria_gcm;
50}
51