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 "evp_locl.h"
  15
  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
  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
  38 void EVP_CIPHER_meth_free(EVP_CIPHER *cipher)
  39 {
  40     OPENSSL_free(cipher);
  41 }
  42
  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
  49 int EVP_CIPHER_meth_set_flags(EVP_CIPHER *cipher, unsigned long flags)
  50 {
  51     cipher->flags = flags;
  52     return 1;
  53 }
  54
  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
  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
  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
  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
  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
  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
 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
 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 }
 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
 128 int (*EVP_CIPHER_meth_get_cleanup(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *)
 129 {
 130     return cipher->cleanup;
 131 }
 132
 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
 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
 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