include/openssl/aes.h

   1 /*
   2  * Copyright 2002-2016 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_AES_H
  11 # define OPENSSL_AES_H
  12 # pragma once
  13
  14 # include <openssl/macros.h>
  15 # ifndef OPENSSL_NO_DEPRECATED_3_0
  16 #  define HEADER_AES_H
  17 # endif
  18
  19 # include <openssl/opensslconf.h>
  20
  21 # include <stddef.h>
  22 # ifdef  __cplusplus
  23 extern "C" {
  24 # endif
  25
  26 # define AES_ENCRYPT     1
  27 # define AES_DECRYPT     0
  28
  29 /*
  30  * Because array size can't be a const in C, the following two are macros.
  31  * Both sizes are in bytes.
  32  */
  33 # define AES_MAXNR 14
  34 # define AES_BLOCK_SIZE 16
  35
  36 /* This should be a hidden type, but EVP requires that the size be known */
  37 struct aes_key_st {
  38 # ifdef AES_LONG
  39     unsigned long rd_key[4 * (AES_MAXNR + 1)];
  40 # else
  41     unsigned int rd_key[4 * (AES_MAXNR + 1)];
  42 # endif
  43     int rounds;
  44 };
  45 typedef struct aes_key_st AES_KEY;
  46
  47 const char *AES_options(void);
  48
  49 int AES_set_encrypt_key(const unsigned char *userKey, const int bits,
  50                         AES_KEY *key);
  51 int AES_set_decrypt_key(const unsigned char *userKey, const int bits,
  52                         AES_KEY *key);
  53
  54 void AES_encrypt(const unsigned char *in, unsigned char *out,
  55                  const AES_KEY *key);
  56 void AES_decrypt(const unsigned char *in, unsigned char *out,
  57                  const AES_KEY *key);
  58
  59 void AES_ecb_encrypt(const unsigned char *in, unsigned char *out,
  60                      const AES_KEY *key, const int enc);
  61 void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
  62                      size_t length, const AES_KEY *key,
  63                      unsigned char *ivec, const int enc);
  64 void AES_cfb128_encrypt(const unsigned char *in, unsigned char *out,
  65                         size_t length, const AES_KEY *key,
  66                         unsigned char *ivec, int *num, const int enc);
  67 void AES_cfb1_encrypt(const unsigned char *in, unsigned char *out,
  68                       size_t length, const AES_KEY *key,
  69                       unsigned char *ivec, int *num, const int enc);
  70 void AES_cfb8_encrypt(const unsigned char *in, unsigned char *out,
  71                       size_t length, const AES_KEY *key,
  72                       unsigned char *ivec, int *num, const int enc);
  73 void AES_ofb128_encrypt(const unsigned char *in, unsigned char *out,
  74                         size_t length, const AES_KEY *key,
  75                         unsigned char *ivec, int *num);
  76 # ifndef OPENSSL_NO_DEPRECATED_3_0
  77 /* NB: the IV is _two_ blocks long */
  78 void AES_ige_encrypt(const unsigned char *in, unsigned char *out,
  79                      size_t length, const AES_KEY *key,
  80                      unsigned char *ivec, const int enc);
  81 /* NB: the IV is _four_ blocks long */
  82 void AES_bi_ige_encrypt(const unsigned char *in, unsigned char *out,
  83                         size_t length, const AES_KEY *key,
  84                         const AES_KEY *key2, const unsigned char *ivec,
  85                         const int enc);
  86 # endif
  87
  88 int AES_wrap_key(AES_KEY *key, const unsigned char *iv,
  89                  unsigned char *out,
  90                  const unsigned char *in, unsigned int inlen);
  91 int AES_unwrap_key(AES_KEY *key, const unsigned char *iv,
  92                    unsigned char *out,
  93                    const unsigned char *in, unsigned int inlen);
  94
  95
  96 # ifdef  __cplusplus
  97 }
  98 # endif
  99
 100 #endif