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e79f8773 | 1 | /* |
aa6bb135 | 2 | * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved. |
e79f8773 | 3 | * |
4a8b0c55 | 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 | |
e79f8773 RL |
8 | */ |
9 | ||
10 | #include <string.h> | |
11 | ||
12 | #include <openssl/evp.h> | |
13 | #include "internal/evp_int.h" | |
df05f2ce | 14 | #include "internal/provider.h" |
e79f8773 RL |
15 | #include "evp_locl.h" |
16 | ||
17 | EVP_CIPHER *EVP_CIPHER_meth_new(int cipher_type, int block_size, int key_len) | |
18 | { | |
43ecb9c3 RS |
19 | EVP_CIPHER *cipher = OPENSSL_zalloc(sizeof(EVP_CIPHER)); |
20 | ||
e79f8773 RL |
21 | if (cipher != NULL) { |
22 | cipher->nid = cipher_type; | |
23 | cipher->block_size = block_size; | |
24 | cipher->key_len = key_len; | |
df05f2ce MC |
25 | cipher->lock = CRYPTO_THREAD_lock_new(); |
26 | if (cipher->lock == NULL) { | |
27 | OPENSSL_free(cipher); | |
28 | return NULL; | |
29 | } | |
30 | cipher->refcnt = 1; | |
e79f8773 RL |
31 | } |
32 | return cipher; | |
33 | } | |
34 | ||
35 | EVP_CIPHER *EVP_CIPHER_meth_dup(const EVP_CIPHER *cipher) | |
36 | { | |
37 | EVP_CIPHER *to = EVP_CIPHER_meth_new(cipher->nid, cipher->block_size, | |
38 | cipher->key_len); | |
43ecb9c3 | 39 | |
df05f2ce MC |
40 | if (to != NULL) { |
41 | CRYPTO_RWLOCK *lock = to->lock; | |
42 | ||
e79f8773 | 43 | memcpy(to, cipher, sizeof(*to)); |
df05f2ce MC |
44 | to->lock = lock; |
45 | } | |
e79f8773 RL |
46 | return to; |
47 | } | |
48 | ||
49 | void EVP_CIPHER_meth_free(EVP_CIPHER *cipher) | |
50 | { | |
df05f2ce MC |
51 | if (cipher != NULL) { |
52 | int i; | |
53 | ||
54 | CRYPTO_DOWN_REF(&cipher->refcnt, &i, cipher->lock); | |
55 | if (i > 0) | |
56 | return; | |
57 | ossl_provider_free(cipher->prov); | |
58 | CRYPTO_THREAD_lock_free(cipher->lock); | |
59 | OPENSSL_free(cipher); | |
60 | } | |
61 | } | |
62 | ||
63 | int EVP_CIPHER_upref(EVP_CIPHER *cipher) | |
64 | { | |
65 | int ref = 0; | |
66 | ||
67 | CRYPTO_UP_REF(&cipher->refcnt, &ref, cipher->lock); | |
68 | return 1; | |
e79f8773 RL |
69 | } |
70 | ||
71 | int EVP_CIPHER_meth_set_iv_length(EVP_CIPHER *cipher, int iv_len) | |
72 | { | |
73 | cipher->iv_len = iv_len; | |
74 | return 1; | |
75 | } | |
76 | ||
77 | int EVP_CIPHER_meth_set_flags(EVP_CIPHER *cipher, unsigned long flags) | |
78 | { | |
79 | cipher->flags = flags; | |
80 | return 1; | |
81 | } | |
82 | ||
83 | int EVP_CIPHER_meth_set_impl_ctx_size(EVP_CIPHER *cipher, int ctx_size) | |
84 | { | |
85 | cipher->ctx_size = ctx_size; | |
86 | return 1; | |
87 | } | |
88 | ||
89 | int EVP_CIPHER_meth_set_init(EVP_CIPHER *cipher, | |
90 | int (*init) (EVP_CIPHER_CTX *ctx, | |
91 | const unsigned char *key, | |
92 | const unsigned char *iv, | |
93 | int enc)) | |
94 | { | |
95 | cipher->init = init; | |
96 | return 1; | |
97 | } | |
98 | ||
99 | int EVP_CIPHER_meth_set_do_cipher(EVP_CIPHER *cipher, | |
100 | int (*do_cipher) (EVP_CIPHER_CTX *ctx, | |
101 | unsigned char *out, | |
102 | const unsigned char *in, | |
103 | size_t inl)) | |
104 | { | |
105 | cipher->do_cipher = do_cipher; | |
106 | return 1; | |
107 | } | |
108 | ||
109 | int EVP_CIPHER_meth_set_cleanup(EVP_CIPHER *cipher, | |
110 | int (*cleanup) (EVP_CIPHER_CTX *)) | |
111 | { | |
112 | cipher->cleanup = cleanup; | |
113 | return 1; | |
114 | } | |
115 | ||
116 | int EVP_CIPHER_meth_set_set_asn1_params(EVP_CIPHER *cipher, | |
117 | int (*set_asn1_parameters) (EVP_CIPHER_CTX *, | |
118 | ASN1_TYPE *)) | |
119 | { | |
120 | cipher->set_asn1_parameters = set_asn1_parameters; | |
121 | return 1; | |
122 | } | |
123 | ||
124 | int EVP_CIPHER_meth_set_get_asn1_params(EVP_CIPHER *cipher, | |
125 | int (*get_asn1_parameters) (EVP_CIPHER_CTX *, | |
126 | ASN1_TYPE *)) | |
127 | { | |
128 | cipher->get_asn1_parameters = get_asn1_parameters; | |
129 | return 1; | |
130 | } | |
131 | ||
132 | int EVP_CIPHER_meth_set_ctrl(EVP_CIPHER *cipher, | |
133 | int (*ctrl) (EVP_CIPHER_CTX *, int type, | |
134 | int arg, void *ptr)) | |
135 | { | |
136 | cipher->ctrl = ctrl; | |
137 | return 1; | |
138 | } | |
139 | ||
140 | ||
141 | int (*EVP_CIPHER_meth_get_init(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *ctx, | |
142 | const unsigned char *key, | |
143 | const unsigned char *iv, | |
144 | int enc) | |
145 | { | |
146 | return cipher->init; | |
147 | } | |
148 | int (*EVP_CIPHER_meth_get_do_cipher(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *ctx, | |
149 | unsigned char *out, | |
150 | const unsigned char *in, | |
151 | size_t inl) | |
152 | { | |
153 | return cipher->do_cipher; | |
154 | } | |
155 | ||
156 | int (*EVP_CIPHER_meth_get_cleanup(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *) | |
157 | { | |
158 | return cipher->cleanup; | |
159 | } | |
160 | ||
161 | int (*EVP_CIPHER_meth_get_set_asn1_params(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *, | |
162 | ASN1_TYPE *) | |
163 | { | |
164 | return cipher->set_asn1_parameters; | |
165 | } | |
166 | ||
167 | int (*EVP_CIPHER_meth_get_get_asn1_params(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *, | |
168 | ASN1_TYPE *) | |
169 | { | |
170 | return cipher->get_asn1_parameters; | |
171 | } | |
172 | ||
173 | int (*EVP_CIPHER_meth_get_ctrl(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *, | |
174 | int type, int arg, | |
175 | void *ptr) | |
176 | { | |
177 | return cipher->ctrl; | |
178 | } | |
179 |