1 /* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
2 /* lib/crypto/openssl/hash_provider/hash_evp.c - OpenSSL hash providers */
3 /*
4 * Copyright (C) 2015 by the Massachusetts Institute of Technology.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * * Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
17 * distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
23 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
24 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
26 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
28 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
30 * OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include "crypto_int.h"
34
35 #if defined(K5_OPENSSL_MD4) || defined(K5_OPENSSL_MD5) || \
36 defined(K5_OPENSSL_SHA1) || defined(K5_OPENSSL_SHA2)
37
38 #include <openssl/evp.h>
39
40 /* 1.1 standardizes constructor and destructor names, renaming
41 * EVP_MD_CTX_create and EVP_MD_CTX_destroy. */
42 #if OPENSSL_VERSION_NUMBER < 0x10100000L
43 #define EVP_MD_CTX_new EVP_MD_CTX_create
44 #define EVP_MD_CTX_free EVP_MD_CTX_destroy
45 #endif
46
47 static krb5_error_code
hash_evp(const EVP_MD * type,const krb5_crypto_iov * data,size_t num_data,krb5_data * output)48 hash_evp(const EVP_MD *type, const krb5_crypto_iov *data, size_t num_data,
49 krb5_data *output)
50 {
51 EVP_MD_CTX *ctx;
52 const krb5_data *d;
53 size_t i;
54 int ok;
55
56 if (output->length != (unsigned int)EVP_MD_size(type))
57 return KRB5_CRYPTO_INTERNAL;
58
59 ctx = EVP_MD_CTX_new();
60 if (ctx == NULL)
61 return ENOMEM;
62
63 ok = EVP_DigestInit_ex(ctx, type, NULL);
64 for (i = 0; i < num_data; i++) {
65 if (!SIGN_IOV(&data[i]))
66 continue;
67 d = &data[i].data;
68 ok = ok && EVP_DigestUpdate(ctx, d->data, d->length);
69 }
70 ok = ok && EVP_DigestFinal_ex(ctx, (uint8_t *)output->data, NULL);
71 EVP_MD_CTX_free(ctx);
72 return ok ? 0 : KRB5_CRYPTO_INTERNAL;
73 }
74
75 #endif
76
77 #ifdef K5_OPENSSL_MD4
78 static krb5_error_code
hash_md4(const krb5_crypto_iov * data,size_t num_data,krb5_data * output)79 hash_md4(const krb5_crypto_iov *data, size_t num_data, krb5_data *output)
80 {
81 return hash_evp(EVP_md4(), data, num_data, output);
82 }
83
84 const struct krb5_hash_provider krb5int_hash_md4 = {
85 "MD4", 16, 64, hash_md4
86 };
87 #endif
88
89 #ifdef K5_OPENSSL_MD5
90 static krb5_error_code
hash_md5(const krb5_crypto_iov * data,size_t num_data,krb5_data * output)91 hash_md5(const krb5_crypto_iov *data, size_t num_data, krb5_data *output)
92 {
93 return hash_evp(EVP_md5(), data, num_data, output);
94 }
95
96 const struct krb5_hash_provider krb5int_hash_md5 = {
97 "MD5", 16, 64, hash_md5
98 };
99 #endif
100
101 #ifdef K5_OPENSSL_SHA1
102 static krb5_error_code
hash_sha1(const krb5_crypto_iov * data,size_t num_data,krb5_data * output)103 hash_sha1(const krb5_crypto_iov *data, size_t num_data, krb5_data *output)
104 {
105 return hash_evp(EVP_sha1(), data, num_data, output);
106 }
107
108 const struct krb5_hash_provider krb5int_hash_sha1 = {
109 "SHA1", 20, 64, hash_sha1
110 };
111 #endif
112
113 #ifdef K5_OPENSSL_SHA2
114 static krb5_error_code
hash_sha256(const krb5_crypto_iov * data,size_t num_data,krb5_data * output)115 hash_sha256(const krb5_crypto_iov *data, size_t num_data, krb5_data *output)
116 {
117 return hash_evp(EVP_sha256(), data, num_data, output);
118 }
119
120 static krb5_error_code
hash_sha384(const krb5_crypto_iov * data,size_t num_data,krb5_data * output)121 hash_sha384(const krb5_crypto_iov *data, size_t num_data, krb5_data *output)
122 {
123 return hash_evp(EVP_sha384(), data, num_data, output);
124 }
125
126 const struct krb5_hash_provider krb5int_hash_sha256 = {
127 "SHA-256", 32, 64, hash_sha256
128 };
129
130 const struct krb5_hash_provider krb5int_hash_sha384 = {
131 "SHA-384", 48, 128, hash_sha384
132 };
133 #endif
134