1 /*
2 * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (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
10 #include <string.h>
11
12 #include <openssl/evp.h>
13 #include "crypto/evp.h"
14 #include "evp_local.h"
15
EVP_CIPHER_meth_new(int cipher_type,int block_size,int key_len)16 EVP_CIPHER *EVP_CIPHER_meth_new(int cipher_type, int block_size, int key_len)
17 {
18 EVP_CIPHER *cipher = OPENSSL_zalloc(sizeof(EVP_CIPHER));
19
20 if (cipher != NULL) {
21 cipher->nid = cipher_type;
22 cipher->block_size = block_size;
23 cipher->key_len = key_len;
24 }
25 return cipher;
26 }
27
EVP_CIPHER_meth_dup(const EVP_CIPHER * cipher)28 EVP_CIPHER *EVP_CIPHER_meth_dup(const EVP_CIPHER *cipher)
29 {
30 EVP_CIPHER *to = EVP_CIPHER_meth_new(cipher->nid, cipher->block_size,
31 cipher->key_len);
32
33 if (to != NULL)
34 memcpy(to, cipher, sizeof(*to));
35 return to;
36 }
37
EVP_CIPHER_meth_free(EVP_CIPHER * cipher)38 void EVP_CIPHER_meth_free(EVP_CIPHER *cipher)
39 {
40 OPENSSL_free(cipher);
41 }
42
EVP_CIPHER_meth_set_iv_length(EVP_CIPHER * cipher,int iv_len)43 int EVP_CIPHER_meth_set_iv_length(EVP_CIPHER *cipher, int iv_len)
44 {
45 cipher->iv_len = iv_len;
46 return 1;
47 }
48
EVP_CIPHER_meth_set_flags(EVP_CIPHER * cipher,unsigned long flags)49 int EVP_CIPHER_meth_set_flags(EVP_CIPHER *cipher, unsigned long flags)
50 {
51 cipher->flags = flags;
52 return 1;
53 }
54
EVP_CIPHER_meth_set_impl_ctx_size(EVP_CIPHER * cipher,int ctx_size)55 int EVP_CIPHER_meth_set_impl_ctx_size(EVP_CIPHER *cipher, int ctx_size)
56 {
57 cipher->ctx_size = ctx_size;
58 return 1;
59 }
60
EVP_CIPHER_meth_set_init(EVP_CIPHER * cipher,int (* init)(EVP_CIPHER_CTX * ctx,const unsigned char * key,const unsigned char * iv,int enc))61 int EVP_CIPHER_meth_set_init(EVP_CIPHER *cipher,
62 int (*init) (EVP_CIPHER_CTX *ctx,
63 const unsigned char *key,
64 const unsigned char *iv,
65 int enc))
66 {
67 cipher->init = init;
68 return 1;
69 }
70
EVP_CIPHER_meth_set_do_cipher(EVP_CIPHER * cipher,int (* do_cipher)(EVP_CIPHER_CTX * ctx,unsigned char * out,const unsigned char * in,size_t inl))71 int EVP_CIPHER_meth_set_do_cipher(EVP_CIPHER *cipher,
72 int (*do_cipher) (EVP_CIPHER_CTX *ctx,
73 unsigned char *out,
74 const unsigned char *in,
75 size_t inl))
76 {
77 cipher->do_cipher = do_cipher;
78 return 1;
79 }
80
EVP_CIPHER_meth_set_cleanup(EVP_CIPHER * cipher,int (* cleanup)(EVP_CIPHER_CTX *))81 int EVP_CIPHER_meth_set_cleanup(EVP_CIPHER *cipher,
82 int (*cleanup) (EVP_CIPHER_CTX *))
83 {
84 cipher->cleanup = cleanup;
85 return 1;
86 }
87
EVP_CIPHER_meth_set_set_asn1_params(EVP_CIPHER * cipher,int (* set_asn1_parameters)(EVP_CIPHER_CTX *,ASN1_TYPE *))88 int EVP_CIPHER_meth_set_set_asn1_params(EVP_CIPHER *cipher,
89 int (*set_asn1_parameters) (EVP_CIPHER_CTX *,
90 ASN1_TYPE *))
91 {
92 cipher->set_asn1_parameters = set_asn1_parameters;
93 return 1;
94 }
95
EVP_CIPHER_meth_set_get_asn1_params(EVP_CIPHER * cipher,int (* get_asn1_parameters)(EVP_CIPHER_CTX *,ASN1_TYPE *))96 int EVP_CIPHER_meth_set_get_asn1_params(EVP_CIPHER *cipher,
97 int (*get_asn1_parameters) (EVP_CIPHER_CTX *,
98 ASN1_TYPE *))
99 {
100 cipher->get_asn1_parameters = get_asn1_parameters;
101 return 1;
102 }
103
EVP_CIPHER_meth_set_ctrl(EVP_CIPHER * cipher,int (* ctrl)(EVP_CIPHER_CTX *,int type,int arg,void * ptr))104 int EVP_CIPHER_meth_set_ctrl(EVP_CIPHER *cipher,
105 int (*ctrl) (EVP_CIPHER_CTX *, int type,
106 int arg, void *ptr))
107 {
108 cipher->ctrl = ctrl;
109 return 1;
110 }
111
112
EVP_CIPHER_meth_get_init(const EVP_CIPHER * cipher)113 int (*EVP_CIPHER_meth_get_init(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *ctx,
114 const unsigned char *key,
115 const unsigned char *iv,
116 int enc)
117 {
118 return cipher->init;
119 }
EVP_CIPHER_meth_get_do_cipher(const EVP_CIPHER * cipher)120 int (*EVP_CIPHER_meth_get_do_cipher(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *ctx,
121 unsigned char *out,
122 const unsigned char *in,
123 size_t inl)
124 {
125 return cipher->do_cipher;
126 }
127
EVP_CIPHER_meth_get_cleanup(const EVP_CIPHER * cipher)128 int (*EVP_CIPHER_meth_get_cleanup(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *)
129 {
130 return cipher->cleanup;
131 }
132
EVP_CIPHER_meth_get_set_asn1_params(const EVP_CIPHER * cipher)133 int (*EVP_CIPHER_meth_get_set_asn1_params(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *,
134 ASN1_TYPE *)
135 {
136 return cipher->set_asn1_parameters;
137 }
138
EVP_CIPHER_meth_get_get_asn1_params(const EVP_CIPHER * cipher)139 int (*EVP_CIPHER_meth_get_get_asn1_params(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *,
140 ASN1_TYPE *)
141 {
142 return cipher->get_asn1_parameters;
143 }
144
EVP_CIPHER_meth_get_ctrl(const EVP_CIPHER * cipher)145 int (*EVP_CIPHER_meth_get_ctrl(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *,
146 int type, int arg,
147 void *ptr)
148 {
149 return cipher->ctrl;
150 }
151
152