1b077aed3SPierre Pronchery /*
2*e0c4386eSCy Schubert * Copyright 2019-2024 The OpenSSL Project Authors. All Rights Reserved.
3b077aed3SPierre Pronchery *
4b077aed3SPierre Pronchery * Licensed under the Apache License 2.0 (the "License"). You may not use
5b077aed3SPierre Pronchery * this file except in compliance with the License. You can obtain a copy
6b077aed3SPierre Pronchery * in the file LICENSE in the source distribution or at
7b077aed3SPierre Pronchery * https://www.openssl.org/source/license.html
8b077aed3SPierre Pronchery */
9b077aed3SPierre Pronchery
10b077aed3SPierre Pronchery /*
11b077aed3SPierre Pronchery * AES low level APIs are deprecated for public use, but still ok for internal
12b077aed3SPierre Pronchery * use where we're using them to implement the higher level EVP interface, as is
13b077aed3SPierre Pronchery * the case here.
14b077aed3SPierre Pronchery */
15b077aed3SPierre Pronchery #include "internal/deprecated.h"
16b077aed3SPierre Pronchery
17b077aed3SPierre Pronchery /* Dispatch functions for AES CCM mode */
18b077aed3SPierre Pronchery
19b077aed3SPierre Pronchery #include "cipher_aes_ccm.h"
20b077aed3SPierre Pronchery #include "prov/implementations.h"
21b077aed3SPierre Pronchery #include "prov/providercommon.h"
22b077aed3SPierre Pronchery
aes_ccm_newctx(void * provctx,size_t keybits)23b077aed3SPierre Pronchery static void *aes_ccm_newctx(void *provctx, size_t keybits)
24b077aed3SPierre Pronchery {
25b077aed3SPierre Pronchery PROV_AES_CCM_CTX *ctx;
26b077aed3SPierre Pronchery
27b077aed3SPierre Pronchery if (!ossl_prov_is_running())
28b077aed3SPierre Pronchery return NULL;
29b077aed3SPierre Pronchery
30b077aed3SPierre Pronchery ctx = OPENSSL_zalloc(sizeof(*ctx));
31b077aed3SPierre Pronchery if (ctx != NULL)
32b077aed3SPierre Pronchery ossl_ccm_initctx(&ctx->base, keybits, ossl_prov_aes_hw_ccm(keybits));
33b077aed3SPierre Pronchery return ctx;
34b077aed3SPierre Pronchery }
35b077aed3SPierre Pronchery
aes_ccm_dupctx(void * provctx)36*e0c4386eSCy Schubert static void *aes_ccm_dupctx(void *provctx)
37*e0c4386eSCy Schubert {
38*e0c4386eSCy Schubert PROV_AES_CCM_CTX *ctx = provctx;
39*e0c4386eSCy Schubert PROV_AES_CCM_CTX *dupctx = NULL;
40*e0c4386eSCy Schubert
41*e0c4386eSCy Schubert if (ctx == NULL)
42*e0c4386eSCy Schubert return NULL;
43*e0c4386eSCy Schubert dupctx = OPENSSL_memdup(provctx, sizeof(*ctx));
44*e0c4386eSCy Schubert if (dupctx == NULL)
45*e0c4386eSCy Schubert return NULL;
46*e0c4386eSCy Schubert /*
47*e0c4386eSCy Schubert * ossl_cm_initctx, via the ossl_prov_aes_hw_ccm functions assign a
48*e0c4386eSCy Schubert * provctx->ccm.ks.ks to the ccm context key so we need to point it to
49*e0c4386eSCy Schubert * the memduped copy
50*e0c4386eSCy Schubert */
51*e0c4386eSCy Schubert dupctx->base.ccm_ctx.key = &dupctx->ccm.ks.ks;
52*e0c4386eSCy Schubert
53*e0c4386eSCy Schubert return dupctx;
54*e0c4386eSCy Schubert }
55*e0c4386eSCy Schubert
56b077aed3SPierre Pronchery static OSSL_FUNC_cipher_freectx_fn aes_ccm_freectx;
aes_ccm_freectx(void * vctx)57b077aed3SPierre Pronchery static void aes_ccm_freectx(void *vctx)
58b077aed3SPierre Pronchery {
59b077aed3SPierre Pronchery PROV_AES_CCM_CTX *ctx = (PROV_AES_CCM_CTX *)vctx;
60b077aed3SPierre Pronchery
61b077aed3SPierre Pronchery OPENSSL_clear_free(ctx, sizeof(*ctx));
62b077aed3SPierre Pronchery }
63b077aed3SPierre Pronchery
64b077aed3SPierre Pronchery /* ossl_aes128ccm_functions */
65b077aed3SPierre Pronchery IMPLEMENT_aead_cipher(aes, ccm, CCM, AEAD_FLAGS, 128, 8, 96);
66b077aed3SPierre Pronchery /* ossl_aes192ccm_functions */
67b077aed3SPierre Pronchery IMPLEMENT_aead_cipher(aes, ccm, CCM, AEAD_FLAGS, 192, 8, 96);
68b077aed3SPierre Pronchery /* ossl_aes256ccm_functions */
69b077aed3SPierre Pronchery IMPLEMENT_aead_cipher(aes, ccm, CCM, AEAD_FLAGS, 256, 8, 96);
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