include/openssl/cast.h

   1 /*
   2  * Copyright 1995-2016 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 #ifndef OPENSSL_CAST_H
  11 # define OPENSSL_CAST_H
  12 # pragma once
  13
  14 # include <openssl/macros.h>
  15 # ifndef OPENSSL_NO_DEPRECATED_3_0
  16 #  define HEADER_CAST_H
  17 # endif
  18
  19 # include <openssl/opensslconf.h>
  20
  21 # ifndef OPENSSL_NO_CAST
  22 # ifdef  __cplusplus
  23 extern "C" {
  24 # endif
  25
  26 # define CAST_ENCRYPT    1
  27 # define CAST_DECRYPT    0
  28
  29 # define CAST_LONG unsigned int
  30
  31 # define CAST_BLOCK      8
  32 # define CAST_KEY_LENGTH 16
  33
  34 typedef struct cast_key_st {
  35     CAST_LONG data[32];
  36     int short_key;              /* Use reduced rounds for short key */
  37 } CAST_KEY;
  38
  39 void CAST_set_key(CAST_KEY *key, int len, const unsigned char *data);
  40 void CAST_ecb_encrypt(const unsigned char *in, unsigned char *out,
  41                       const CAST_KEY *key, int enc);
  42 void CAST_encrypt(CAST_LONG *data, const CAST_KEY *key);
  43 void CAST_decrypt(CAST_LONG *data, const CAST_KEY *key);
  44 void CAST_cbc_encrypt(const unsigned char *in, unsigned char *out,
  45                       long length, const CAST_KEY *ks, unsigned char *iv,
  46                       int enc);
  47 void CAST_cfb64_encrypt(const unsigned char *in, unsigned char *out,
  48                         long length, const CAST_KEY *schedule,
  49                         unsigned char *ivec, int *num, int enc);
  50 void CAST_ofb64_encrypt(const unsigned char *in, unsigned char *out,
  51                         long length, const CAST_KEY *schedule,
  52                         unsigned char *ivec, int *num);
  53
  54 # ifdef  __cplusplus
  55 }
  56 # endif
  57 # endif
  58
  59 #endif