1 /*
2 * Hash information that's independent from the crypto implementation.
3 *
4 * (See the corresponding header file for usage notes.)
5 */
6 /*
7 * Copyright The Mbed TLS Contributors
8 * SPDX-License-Identifier: Apache-2.0
9 *
10 * Licensed under the Apache License, Version 2.0 (the "License"); you may
11 * not use this file except in compliance with the License.
12 * You may obtain a copy of the License at
13 *
14 * http://www.apache.org/licenses/LICENSE-2.0
15 *
16 * Unless required by applicable law or agreed to in writing, software
17 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
18 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19 * See the License for the specific language governing permissions and
20 * limitations under the License.
21 */
22
23 #include "hash_info.h"
24 #include "mbedtls/legacy_or_psa.h"
25 #include "mbedtls/error.h"
26
27 typedef struct {
28 psa_algorithm_t psa_alg;
29 mbedtls_md_type_t md_type;
30 unsigned char size;
31 unsigned char block_size;
32 } hash_entry;
33
34 static const hash_entry hash_table[] = {
35 #if defined(MBEDTLS_HAS_ALG_MD5_VIA_LOWLEVEL_OR_PSA)
36 { PSA_ALG_MD5, MBEDTLS_MD_MD5, 16, 64 },
37 #endif
38 #if defined(MBEDTLS_HAS_ALG_RIPEMD160_VIA_LOWLEVEL_OR_PSA)
39 { PSA_ALG_RIPEMD160, MBEDTLS_MD_RIPEMD160, 20, 64 },
40 #endif
41 #if defined(MBEDTLS_HAS_ALG_SHA_1_VIA_LOWLEVEL_OR_PSA)
42 { PSA_ALG_SHA_1, MBEDTLS_MD_SHA1, 20, 64 },
43 #endif
44 #if defined(MBEDTLS_HAS_ALG_SHA_224_VIA_LOWLEVEL_OR_PSA)
45 { PSA_ALG_SHA_224, MBEDTLS_MD_SHA224, 28, 64 },
46 #endif
47 #if defined(MBEDTLS_HAS_ALG_SHA_256_VIA_LOWLEVEL_OR_PSA)
48 { PSA_ALG_SHA_256, MBEDTLS_MD_SHA256, 32, 64 },
49 #endif
50 #if defined(MBEDTLS_HAS_ALG_SHA_384_VIA_LOWLEVEL_OR_PSA)
51 { PSA_ALG_SHA_384, MBEDTLS_MD_SHA384, 48, 128 },
52 #endif
53 #if defined(MBEDTLS_HAS_ALG_SHA_512_VIA_LOWLEVEL_OR_PSA)
54 { PSA_ALG_SHA_512, MBEDTLS_MD_SHA512, 64, 128 },
55 #endif
56 { PSA_ALG_NONE, MBEDTLS_MD_NONE, 0, 0 },
57 };
58
59 /* Get size from MD type */
mbedtls_hash_info_get_size(mbedtls_md_type_t md_type)60 unsigned char mbedtls_hash_info_get_size(mbedtls_md_type_t md_type)
61 {
62 const hash_entry *entry = hash_table;
63 while (entry->md_type != MBEDTLS_MD_NONE &&
64 entry->md_type != md_type) {
65 entry++;
66 }
67
68 return entry->size;
69 }
70
71 /* Get block size from MD type */
mbedtls_hash_info_get_block_size(mbedtls_md_type_t md_type)72 unsigned char mbedtls_hash_info_get_block_size(mbedtls_md_type_t md_type)
73 {
74 const hash_entry *entry = hash_table;
75 while (entry->md_type != MBEDTLS_MD_NONE &&
76 entry->md_type != md_type) {
77 entry++;
78 }
79
80 return entry->block_size;
81 }
82
83 /* Get PSA from MD */
mbedtls_hash_info_psa_from_md(mbedtls_md_type_t md_type)84 psa_algorithm_t mbedtls_hash_info_psa_from_md(mbedtls_md_type_t md_type)
85 {
86 const hash_entry *entry = hash_table;
87 while (entry->md_type != MBEDTLS_MD_NONE &&
88 entry->md_type != md_type) {
89 entry++;
90 }
91
92 return entry->psa_alg;
93 }
94
95 /* Get MD from PSA */
mbedtls_hash_info_md_from_psa(psa_algorithm_t psa_alg)96 mbedtls_md_type_t mbedtls_hash_info_md_from_psa(psa_algorithm_t psa_alg)
97 {
98 const hash_entry *entry = hash_table;
99 while (entry->md_type != MBEDTLS_MD_NONE &&
100 entry->psa_alg != psa_alg) {
101 entry++;
102 }
103
104 return entry->md_type;
105 }
106
107 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
mbedtls_md_error_from_psa(psa_status_t status)108 int mbedtls_md_error_from_psa(psa_status_t status)
109 {
110 switch (status) {
111 case PSA_SUCCESS:
112 return 0;
113 case PSA_ERROR_NOT_SUPPORTED:
114 return MBEDTLS_ERR_MD_FEATURE_UNAVAILABLE;
115 case PSA_ERROR_INVALID_ARGUMENT:
116 return MBEDTLS_ERR_MD_BAD_INPUT_DATA;
117 case PSA_ERROR_INSUFFICIENT_MEMORY:
118 return MBEDTLS_ERR_MD_ALLOC_FAILED;
119 default:
120 return MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED;
121 }
122 }
123 #endif /* !MBEDTLS_DEPRECATED_REMOVED */
124
