crypto/evp/cmeth_lib.c

   1 /*
   2  * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
   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
  10 #include <string.h>
  11
  12 #include <openssl/evp.h>
  13 #include "internal/evp_int.h"
  14 #include "internal/provider.h"
  15 #include "evp_locl.h"
  16
  17 EVP_CIPHER *EVP_CIPHER_meth_new(int cipher_type, int block_size, int key_len)
  18 {
  19     EVP_CIPHER *cipher = evp_cipher_new();
  20
  21     if (cipher != NULL) {
  22         cipher->nid = cipher_type;
  23         cipher->block_size = block_size;
  24         cipher->key_len = key_len;
  25     }
  26     return cipher;
  27 }
  28
  29 EVP_CIPHER *EVP_CIPHER_meth_dup(const EVP_CIPHER *cipher)
  30 {
  31     EVP_CIPHER *to = NULL;
  32
  33     /*
  34      * Non-legacy EVP_CIPHERs can't be duplicated like this.
  35      * Use EVP_CIPHER_up_ref() instead.
  36      */
  37     if (cipher->prov != NULL)
  38         return NULL;
  39
  40     if ((to = EVP_CIPHER_meth_new(cipher->nid, cipher->block_size,
  41                                   cipher->key_len)) == NULL) {
  42         CRYPTO_RWLOCK *lock = to->lock;
  43
  44         memcpy(to, cipher, sizeof(*to));
  45         to->lock = lock;
  46     }
  47     return to;
  48 }
  49
  50 void EVP_CIPHER_meth_free(EVP_CIPHER *cipher)
  51 {
  52     EVP_CIPHER_free(cipher);
  53 }
  54
  55 int EVP_CIPHER_meth_set_iv_length(EVP_CIPHER *cipher, int iv_len)
  56 {
  57     cipher->iv_len = iv_len;
  58     return 1;
  59 }
  60
  61 int EVP_CIPHER_meth_set_flags(EVP_CIPHER *cipher, unsigned long flags)
  62 {
  63     cipher->flags = flags;
  64     return 1;
  65 }
  66
  67 int EVP_CIPHER_meth_set_impl_ctx_size(EVP_CIPHER *cipher, int ctx_size)
  68 {
  69     cipher->ctx_size = ctx_size;
  70     return 1;
  71 }
  72
  73 int EVP_CIPHER_meth_set_init(EVP_CIPHER *cipher,
  74                              int (*init) (EVP_CIPHER_CTX *ctx,
  75                                           const unsigned char *key,
  76                                           const unsigned char *iv,
  77                                           int enc))
  78 {
  79     cipher->init = init;
  80     return 1;
  81 }
  82
  83 int EVP_CIPHER_meth_set_do_cipher(EVP_CIPHER *cipher,
  84                                   int (*do_cipher) (EVP_CIPHER_CTX *ctx,
  85                                                     unsigned char *out,
  86                                                     const unsigned char *in,
  87                                                     size_t inl))
  88 {
  89     cipher->do_cipher = do_cipher;
  90     return 1;
  91 }
  92
  93 int EVP_CIPHER_meth_set_cleanup(EVP_CIPHER *cipher,
  94                                 int (*cleanup) (EVP_CIPHER_CTX *))
  95 {
  96     cipher->cleanup = cleanup;
  97     return 1;
  98 }
  99
 100 int EVP_CIPHER_meth_set_set_asn1_params(EVP_CIPHER *cipher,
 101                                         int (*set_asn1_parameters) (EVP_CIPHER_CTX *,
 102                                                                     ASN1_TYPE *))
 103 {
 104     cipher->set_asn1_parameters = set_asn1_parameters;
 105     return 1;
 106 }
 107
 108 int EVP_CIPHER_meth_set_get_asn1_params(EVP_CIPHER *cipher,
 109                                         int (*get_asn1_parameters) (EVP_CIPHER_CTX *,
 110                                                                     ASN1_TYPE *))
 111 {
 112     cipher->get_asn1_parameters = get_asn1_parameters;
 113     return 1;
 114 }
 115
 116 int EVP_CIPHER_meth_set_ctrl(EVP_CIPHER *cipher,
 117                              int (*ctrl) (EVP_CIPHER_CTX *, int type,
 118                                           int arg, void *ptr))
 119 {
 120     cipher->ctrl = ctrl;
 121     return 1;
 122 }
 123
 124
 125 int (*EVP_CIPHER_meth_get_init(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *ctx,
 126                                                           const unsigned char *key,
 127                                                           const unsigned char *iv,
 128                                                           int enc)
 129 {
 130     return cipher->init;
 131 }
 132 int (*EVP_CIPHER_meth_get_do_cipher(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *ctx,
 133                                                                unsigned char *out,
 134                                                                const unsigned char *in,
 135                                                                size_t inl)
 136 {
 137     return cipher->do_cipher;
 138 }
 139
 140 int (*EVP_CIPHER_meth_get_cleanup(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *)
 141 {
 142     return cipher->cleanup;
 143 }
 144
 145 int (*EVP_CIPHER_meth_get_set_asn1_params(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *,
 146                                                                      ASN1_TYPE *)
 147 {
 148     return cipher->set_asn1_parameters;
 149 }
 150
 151 int (*EVP_CIPHER_meth_get_get_asn1_params(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *,
 152                                                                ASN1_TYPE *)
 153 {
 154     return cipher->get_asn1_parameters;
 155 }
 156
 157 int (*EVP_CIPHER_meth_get_ctrl(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *,
 158                                                           int type, int arg,
 159                                                           void *ptr)
 160 {
 161     return cipher->ctrl;
 162 }
 163