1 /*
2 * This file is part of the openHiTLS project.
3 *
4 * openHiTLS is licensed under the Mulan PSL v2.
5 * You can use this software according to the terms and conditions of the Mulan PSL v2.
6 * You may obtain a copy of Mulan PSL v2 at:
7 *
8 * http://license.coscl.org.cn/MulanPSL2
9 *
10 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
11 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
12 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
13 * See the Mulan PSL v2 for more details.
14 */
15
16 #include "hitls_build.h"
17 #if defined(HITLS_CRYPTO_EAL) && defined(HITLS_CRYPTO_ENTROPY)
18
19 #include "securec.h"
20 #include "bsl_err_internal.h"
21 #include "bsl_sal.h"
22 #include "crypt_errno.h"
23 #include "eal_entropy.h"
24 #include "eal_common.h"
25 #include "crypt_eal_mac.h"
26 #include "crypt_eal_md.h"
27
28 #ifdef HITLS_CRYPTO_MAC
29 #define ECF_ALG_KEY_LEN 16
30
ECFMac(uint32_t algId,uint8_t * in,uint32_t inLen,uint8_t * out,uint32_t * outLen)31 static int32_t ECFMac(uint32_t algId, uint8_t *in, uint32_t inLen, uint8_t *out, uint32_t *outLen)
32 {
33 CRYPT_EAL_MacCtx *ctx = CRYPT_EAL_MacNewCtx(algId);
34 if (ctx == NULL) {
35 BSL_ERR_PUSH_ERROR(CRYPT_MEM_ALLOC_FAIL);
36 return CRYPT_ENTROPY_CONDITION_FAILURE;
37 }
38 uint32_t keyLen = ECF_ALG_KEY_LEN;
39 uint8_t *ecfKey = (uint8_t *)BSL_SAL_Malloc(keyLen);
40 if (ecfKey == NULL) {
41 CRYPT_EAL_MacFreeCtx(ctx);
42 BSL_ERR_PUSH_ERROR(CRYPT_MEM_ALLOC_FAIL);
43 return CRYPT_MEM_ALLOC_FAIL;
44 }
45 /* reference nist-800 90c-3pd section 3.3.1.1
46 * Unlike other cryptographic applications, keys used in these external conditioning functions do not require
47 * secrecy to accomplish their purpose so may be hard-coded, fixed, or all zeros.
48 */
49 (void)memset_s(ecfKey, keyLen, 0, keyLen);
50 int32_t ret = CRYPT_EAL_MacInit(ctx, ecfKey, keyLen);
51 if (ret != CRYPT_SUCCESS) {
52 CRYPT_EAL_MacFreeCtx(ctx);
53 BSL_SAL_FREE(ecfKey);
54 return ret;
55 }
56 ret = CRYPT_EAL_MacUpdate(ctx, in, inLen);
57 if (ret != CRYPT_SUCCESS) {
58 CRYPT_EAL_MacFreeCtx(ctx);
59 BSL_SAL_FREE(ecfKey);
60 return ret;
61 }
62 ret = CRYPT_EAL_MacFinal(ctx, out, outLen);
63 CRYPT_EAL_MacFreeCtx(ctx);
64 BSL_SAL_FREE(ecfKey);
65 return ret;
66 }
67 #endif
68
EAL_EntropyGetECF(uint32_t algId)69 ExternalConditioningFunction EAL_EntropyGetECF(uint32_t algId)
70 {
71 (void)algId;
72 #ifdef HITLS_CRYPTO_MAC
73 return ECFMac;
74 #else
75 return NULL;
76 #endif
77 }
78 #endif
79