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4a42e264 | 1 | /* |
33388b44 | 2 | * Copyright 2019-2020 The OpenSSL Project Authors. All Rights Reserved. |
4a42e264 SL |
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 | /* AES CCM mode */ | |
11 | ||
c72fa255 MC |
12 | /* |
13 | * This file uses the low level AES functions (which are deprecated for | |
14 | * non-internal use) in order to implement provider AES ciphers. | |
15 | */ | |
16 | #include "internal/deprecated.h" | |
17 | ||
e85f3a14 | 18 | #include "cipher_aes_ccm.h" |
4a42e264 SL |
19 | |
20 | #define AES_HW_CCM_SET_KEY_FN(fn_set_enc_key, fn_blk, fn_ccm_enc, fn_ccm_dec) \ | |
21 | fn_set_enc_key(key, keylen * 8, &actx->ccm.ks.ks); \ | |
22 | CRYPTO_ccm128_init(&ctx->ccm_ctx, ctx->m, ctx->l, &actx->ccm.ks.ks, \ | |
23 | (block128_f)fn_blk); \ | |
24 | ctx->str = ctx->enc ? (ccm128_f)fn_ccm_enc : (ccm128_f)fn_ccm_dec; \ | |
25 | ctx->key_set = 1; | |
26 | ||
27 | static int ccm_generic_aes_initkey(PROV_CCM_CTX *ctx, const unsigned char *key, | |
28 | size_t keylen) | |
29 | { | |
30 | PROV_AES_CCM_CTX *actx = (PROV_AES_CCM_CTX *)ctx; | |
31 | ||
32 | #ifdef HWAES_CAPABLE | |
33 | if (HWAES_CAPABLE) { | |
34 | AES_HW_CCM_SET_KEY_FN(HWAES_set_encrypt_key, HWAES_encrypt, NULL, NULL); | |
35 | } else | |
36 | #endif /* HWAES_CAPABLE */ | |
37 | ||
38 | #ifdef VPAES_CAPABLE | |
39 | if (VPAES_CAPABLE) { | |
40 | AES_HW_CCM_SET_KEY_FN(vpaes_set_encrypt_key, vpaes_encrypt, NULL, NULL); | |
41 | } else | |
42 | #endif | |
43 | { | |
44 | AES_HW_CCM_SET_KEY_FN(AES_set_encrypt_key, AES_encrypt, NULL, NULL) | |
45 | } | |
46 | return 1; | |
47 | } | |
48 | ||
49 | static const PROV_CCM_HW aes_ccm = { | |
50 | ccm_generic_aes_initkey, | |
51 | ccm_generic_setiv, | |
52 | ccm_generic_setaad, | |
53 | ccm_generic_auth_encrypt, | |
54 | ccm_generic_auth_decrypt, | |
55 | ccm_generic_gettag | |
56 | }; | |
57 | ||
58 | #if defined(S390X_aes_128_CAPABLE) | |
59 | # include "cipher_aes_ccm_hw_s390x.inc" | |
60 | #elif defined(AESNI_CAPABLE) | |
61 | # include "cipher_aes_ccm_hw_aesni.inc" | |
62 | #elif defined(SPARC_AES_CAPABLE) | |
63 | # include "cipher_aes_ccm_hw_t4.inc" | |
64 | #else | |
65 | const PROV_CCM_HW *PROV_AES_HW_ccm(size_t keybits) | |
66 | { | |
67 | return &aes_ccm; | |
68 | } | |
69 | #endif |