1 /*
2 * Copyright 2019-2023 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 /* AES CCM mode */
11
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
18 #include "cipher_aes_ccm.h"
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
ccm_generic_aes_initkey(PROV_CCM_CTX * ctx,const unsigned char * key,size_t keylen)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 ossl_ccm_generic_setiv,
52 ossl_ccm_generic_setaad,
53 ossl_ccm_generic_auth_encrypt,
54 ossl_ccm_generic_auth_decrypt,
55 ossl_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 #elif defined(OPENSSL_CPUID_OBJ) && defined(__riscv) && __riscv_xlen == 64
65 # include "cipher_aes_ccm_hw_rv64i.inc"
66 #elif defined(OPENSSL_CPUID_OBJ) && defined(__riscv) && __riscv_xlen == 32
67 # include "cipher_aes_ccm_hw_rv32i.inc"
68 #else
ossl_prov_aes_hw_ccm(size_t keybits)69 const PROV_CCM_HW *ossl_prov_aes_hw_ccm(size_t keybits)
70 {
71 return &aes_ccm;
72 }
73 #endif
74
