providers/implementations/ciphers/cipher_cast5.c

   1 /*
   2  * Copyright 2019 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 /* Dispatch functions for cast cipher modes ecb, cbc, ofb, cfb */
  11
  12 #include "cipher_cast.h"
  13 #include "internal/provider_algs.h"
  14
  15 #define CAST5_FLAGS (EVP_CIPH_VARIABLE_LENGTH)
  16
  17 static OSSL_OP_cipher_freectx_fn cast5_freectx;
  18 static OSSL_OP_cipher_dupctx_fn cast5_dupctx;
  19
  20 static void cast5_freectx(void *vctx)
  21 {
  22     PROV_CAST_CTX *ctx = (PROV_CAST_CTX *)vctx;
  23
  24     OPENSSL_clear_free(ctx,  sizeof(*ctx));
  25 }
  26
  27 static void *cast5_dupctx(void *ctx)
  28 {
  29     PROV_CAST_CTX *in = (PROV_CAST_CTX *)ctx;
  30     PROV_CAST_CTX *ret = OPENSSL_malloc(sizeof(*ret));
  31
  32     if (ret == NULL) {
  33         ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
  34         return NULL;
  35     }
  36     *ret = *in;
  37
  38     return ret;
  39 }
  40
  41 /* cast5128ecb_functions */
  42 IMPLEMENT_generic_cipher(cast5, CAST, ecb, ECB, CAST5_FLAGS, 128, 64, 0, block)
  43 /* cast5128cbc_functions */
  44 IMPLEMENT_generic_cipher(cast5, CAST, cbc, CBC, CAST5_FLAGS, 128, 64, 64, block)
  45 /* cast564ofb64_functions */
  46 IMPLEMENT_generic_cipher(cast5, CAST, ofb64, OFB, CAST5_FLAGS, 64, 8, 64, stream)
  47 /* cast564cfb64_functions */
  48 IMPLEMENT_generic_cipher(cast5, CAST, cfb64,  CFB, CAST5_FLAGS, 64, 8, 64, stream)