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Commit | Line | Data |
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dc1ce3bc | 1 | /* |
33388b44 | 2 | * Copyright 2013-2020 The OpenSSL Project Authors. All Rights Reserved. |
dc1ce3bc | 3 | * |
e38873f5 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
aa6bb135 RS |
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 | |
dc1ce3bc DSH |
8 | */ |
9 | ||
ada66e78 P |
10 | /* |
11 | * DH low level APIs are deprecated for public use, but still ok for | |
12 | * internal use. | |
13 | */ | |
14 | #include "internal/deprecated.h" | |
15 | ||
bef7a815 | 16 | #include "e_os.h" |
e968561d DB |
17 | |
18 | #ifndef OPENSSL_NO_CMS | |
1aec7716 | 19 | # include <string.h> |
7707526b | 20 | # include <openssl/core_names.h> |
1aec7716 SL |
21 | # include <openssl/dh.h> |
22 | # include <openssl/evp.h> | |
23 | # include <openssl/asn1.h> | |
24 | # include <openssl/kdf.h> | |
7707526b | 25 | # include <internal/provider.h> |
dc1ce3bc | 26 | |
0f113f3e MC |
27 | int DH_KDF_X9_42(unsigned char *out, size_t outlen, |
28 | const unsigned char *Z, size_t Zlen, | |
29 | ASN1_OBJECT *key_oid, | |
30 | const unsigned char *ukm, size_t ukmlen, const EVP_MD *md) | |
31 | { | |
1aec7716 SL |
32 | int ret = 0, nid; |
33 | EVP_KDF_CTX *kctx = NULL; | |
7707526b | 34 | EVP_KDF *kdf = NULL; |
1aec7716 | 35 | const char *oid_sn; |
7707526b P |
36 | OSSL_PARAM params[5], *p = params; |
37 | const char *mdname = EVP_MD_name(md); | |
38 | const OSSL_PROVIDER *prov = EVP_MD_provider(md); | |
39 | OPENSSL_CTX *provctx = ossl_provider_library_context(prov); | |
1aec7716 SL |
40 | |
41 | nid = OBJ_obj2nid(key_oid); | |
42 | if (nid == NID_undef) | |
0f113f3e | 43 | return 0; |
1aec7716 SL |
44 | oid_sn = OBJ_nid2sn(nid); |
45 | if (oid_sn == NULL) | |
6e59a892 | 46 | return 0; |
1aec7716 | 47 | |
64115f05 | 48 | kdf = EVP_KDF_fetch(provctx, OSSL_KDF_NAME_X942KDF, NULL); |
7707526b | 49 | if ((kctx = EVP_KDF_CTX_new(kdf)) == NULL) |
0f113f3e | 50 | goto err; |
7707526b | 51 | *p++ = OSSL_PARAM_construct_utf8_string(OSSL_KDF_PARAM_DIGEST, |
8b6ffd40 | 52 | (char *)mdname, 0); |
7707526b P |
53 | *p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_KEY, |
54 | (unsigned char *)Z, Zlen); | |
55 | if (ukm != NULL) | |
56 | *p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_UKM, | |
57 | (unsigned char *)ukm, ukmlen); | |
58 | *p++ = OSSL_PARAM_construct_utf8_string(OSSL_KDF_PARAM_CEK_ALG, | |
8b6ffd40 | 59 | (char *)oid_sn, 0); |
7707526b P |
60 | *p = OSSL_PARAM_construct_end(); |
61 | ret = EVP_KDF_CTX_set_params(kctx, params) > 0 | |
1aec7716 SL |
62 | && EVP_KDF_derive(kctx, out, outlen) > 0; |
63 | err: | |
64 | EVP_KDF_CTX_free(kctx); | |
7707526b | 65 | EVP_KDF_free(kdf); |
1aec7716 | 66 | return ret; |
0f113f3e | 67 | } |
1aec7716 | 68 | #endif /* OPENSSL_NO_CMS */ |