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16fbda84 | 1 | /* |
8020d79b | 2 | * Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved. |
16fbda84 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 | ||
52c8535a P |
10 | #include "internal/deprecated.h" |
11 | ||
16fbda84 SL |
12 | #include <openssl/objects.h> |
13 | #include <openssl/core_names.h> | |
14 | #include <openssl/evp.h> | |
15 | #include <openssl/core.h> | |
7a810fac | 16 | #include "prov/securitycheck.h" |
16fbda84 SL |
17 | #include "internal/nelem.h" |
18 | ||
19 | /* | |
20 | * Internal library code deals with NIDs, so we need to translate from a name. | |
21 | * We do so using EVP_MD_is_a(), and therefore need a name to NID map. | |
22 | */ | |
7b676cc8 | 23 | int ossl_digest_md_to_nid(const EVP_MD *md, const OSSL_ITEM *it, size_t it_len) |
16fbda84 SL |
24 | { |
25 | size_t i; | |
16fbda84 SL |
26 | |
27 | if (md == NULL) | |
49ed5ba8 | 28 | return NID_undef; |
16fbda84 | 29 | |
49ed5ba8 SL |
30 | for (i = 0; i < it_len; i++) |
31 | if (EVP_MD_is_a(md, it[i].ptr)) | |
32 | return (int)it[i].id; | |
33 | return NID_undef; | |
16fbda84 SL |
34 | } |
35 | ||
36 | /* | |
6a2ab4a9 | 37 | * Retrieve one of the FIPS approved hash algorithms by nid. |
16fbda84 SL |
38 | * See FIPS 180-4 "Secure Hash Standard" and FIPS 202 - SHA-3. |
39 | */ | |
7b676cc8 | 40 | int ossl_digest_get_approved_nid(const EVP_MD *md) |
16fbda84 SL |
41 | { |
42 | static const OSSL_ITEM name_to_nid[] = { | |
43 | { NID_sha1, OSSL_DIGEST_NAME_SHA1 }, | |
44 | { NID_sha224, OSSL_DIGEST_NAME_SHA2_224 }, | |
45 | { NID_sha256, OSSL_DIGEST_NAME_SHA2_256 }, | |
46 | { NID_sha384, OSSL_DIGEST_NAME_SHA2_384 }, | |
47 | { NID_sha512, OSSL_DIGEST_NAME_SHA2_512 }, | |
48 | { NID_sha512_224, OSSL_DIGEST_NAME_SHA2_512_224 }, | |
49 | { NID_sha512_256, OSSL_DIGEST_NAME_SHA2_512_256 }, | |
50 | { NID_sha3_224, OSSL_DIGEST_NAME_SHA3_224 }, | |
51 | { NID_sha3_256, OSSL_DIGEST_NAME_SHA3_256 }, | |
52 | { NID_sha3_384, OSSL_DIGEST_NAME_SHA3_384 }, | |
53 | { NID_sha3_512, OSSL_DIGEST_NAME_SHA3_512 }, | |
54 | }; | |
55 | ||
7b676cc8 | 56 | return ossl_digest_md_to_nid(md, name_to_nid, OSSL_NELEM(name_to_nid)); |
16fbda84 | 57 | } |