1*b077aed3SPierre Pronchery /*
2*b077aed3SPierre Pronchery * Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
3*b077aed3SPierre Pronchery *
4*b077aed3SPierre Pronchery * Licensed under the Apache License 2.0 (the "License"). You may not use
5*b077aed3SPierre Pronchery * this file except in compliance with the License. You can obtain a copy
6*b077aed3SPierre Pronchery * in the file LICENSE in the source distribution or at
7*b077aed3SPierre Pronchery * https://www.openssl.org/source/license.html
8*b077aed3SPierre Pronchery */
9*b077aed3SPierre Pronchery
10*b077aed3SPierre Pronchery /* AES CCM mode */
11*b077aed3SPierre Pronchery
12*b077aed3SPierre Pronchery /*
13*b077aed3SPierre Pronchery * This file uses the low level AES functions (which are deprecated for
14*b077aed3SPierre Pronchery * non-internal use) in order to implement provider AES ciphers.
15*b077aed3SPierre Pronchery */
16*b077aed3SPierre Pronchery #include "internal/deprecated.h"
17*b077aed3SPierre Pronchery
18*b077aed3SPierre Pronchery #include "cipher_aes_ccm.h"
19*b077aed3SPierre Pronchery
20*b077aed3SPierre Pronchery #define AES_HW_CCM_SET_KEY_FN(fn_set_enc_key, fn_blk, fn_ccm_enc, fn_ccm_dec) \
21*b077aed3SPierre Pronchery fn_set_enc_key(key, keylen * 8, &actx->ccm.ks.ks); \
22*b077aed3SPierre Pronchery CRYPTO_ccm128_init(&ctx->ccm_ctx, ctx->m, ctx->l, &actx->ccm.ks.ks, \
23*b077aed3SPierre Pronchery (block128_f)fn_blk); \
24*b077aed3SPierre Pronchery ctx->str = ctx->enc ? (ccm128_f)fn_ccm_enc : (ccm128_f)fn_ccm_dec; \
25*b077aed3SPierre Pronchery ctx->key_set = 1;
26*b077aed3SPierre Pronchery
ccm_generic_aes_initkey(PROV_CCM_CTX * ctx,const unsigned char * key,size_t keylen)27*b077aed3SPierre Pronchery static int ccm_generic_aes_initkey(PROV_CCM_CTX *ctx, const unsigned char *key,
28*b077aed3SPierre Pronchery size_t keylen)
29*b077aed3SPierre Pronchery {
30*b077aed3SPierre Pronchery PROV_AES_CCM_CTX *actx = (PROV_AES_CCM_CTX *)ctx;
31*b077aed3SPierre Pronchery
32*b077aed3SPierre Pronchery #ifdef HWAES_CAPABLE
33*b077aed3SPierre Pronchery if (HWAES_CAPABLE) {
34*b077aed3SPierre Pronchery AES_HW_CCM_SET_KEY_FN(HWAES_set_encrypt_key, HWAES_encrypt, NULL, NULL);
35*b077aed3SPierre Pronchery } else
36*b077aed3SPierre Pronchery #endif /* HWAES_CAPABLE */
37*b077aed3SPierre Pronchery
38*b077aed3SPierre Pronchery #ifdef VPAES_CAPABLE
39*b077aed3SPierre Pronchery if (VPAES_CAPABLE) {
40*b077aed3SPierre Pronchery AES_HW_CCM_SET_KEY_FN(vpaes_set_encrypt_key, vpaes_encrypt, NULL, NULL);
41*b077aed3SPierre Pronchery } else
42*b077aed3SPierre Pronchery #endif
43*b077aed3SPierre Pronchery {
44*b077aed3SPierre Pronchery AES_HW_CCM_SET_KEY_FN(AES_set_encrypt_key, AES_encrypt, NULL, NULL)
45*b077aed3SPierre Pronchery }
46*b077aed3SPierre Pronchery return 1;
47*b077aed3SPierre Pronchery }
48*b077aed3SPierre Pronchery
49*b077aed3SPierre Pronchery static const PROV_CCM_HW aes_ccm = {
50*b077aed3SPierre Pronchery ccm_generic_aes_initkey,
51*b077aed3SPierre Pronchery ossl_ccm_generic_setiv,
52*b077aed3SPierre Pronchery ossl_ccm_generic_setaad,
53*b077aed3SPierre Pronchery ossl_ccm_generic_auth_encrypt,
54*b077aed3SPierre Pronchery ossl_ccm_generic_auth_decrypt,
55*b077aed3SPierre Pronchery ossl_ccm_generic_gettag
56*b077aed3SPierre Pronchery };
57*b077aed3SPierre Pronchery
58*b077aed3SPierre Pronchery #if defined(S390X_aes_128_CAPABLE)
59*b077aed3SPierre Pronchery # include "cipher_aes_ccm_hw_s390x.inc"
60*b077aed3SPierre Pronchery #elif defined(AESNI_CAPABLE)
61*b077aed3SPierre Pronchery # include "cipher_aes_ccm_hw_aesni.inc"
62*b077aed3SPierre Pronchery #elif defined(SPARC_AES_CAPABLE)
63*b077aed3SPierre Pronchery # include "cipher_aes_ccm_hw_t4.inc"
64*b077aed3SPierre Pronchery #else
ossl_prov_aes_hw_ccm(size_t keybits)65*b077aed3SPierre Pronchery const PROV_CCM_HW *ossl_prov_aes_hw_ccm(size_t keybits)
66*b077aed3SPierre Pronchery {
67*b077aed3SPierre Pronchery return &aes_ccm;
68*b077aed3SPierre Pronchery }
69*b077aed3SPierre Pronchery #endif
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