text: /*
   * Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.
   *
   * Licensed under the Apache License 2.0 (the "License").  You may not use
   * this file except in compliance with the License.  You can obtain a copy
   * in the file LICENSE in the source distribution or at
   * https://www.openssl.org/source/license.html
   */
  
  #ifndef HEADER_AES_H
  # define HEADER_AES_H
  
  # include <openssl/opensslconf.h>
  
  # include <stddef.h>
  # ifdef  __cplusplus
  extern "C" {
  # endif
  
  # define AES_ENCRYPT     1
  # define AES_DECRYPT     0
  
  /*
   * Because array size can't be a const in C, the following two are macros.
   * Both sizes are in bytes.
   */
  # define AES_MAXNR 14
  # define AES_BLOCK_SIZE 16
  
  /* This should be a hidden type, but EVP requires that the size be known */
  struct aes_key_st {
  # ifdef AES_LONG
      unsigned long rd_key[4 * (AES_MAXNR + 1)];
  # else
      unsigned int rd_key[4 * (AES_MAXNR + 1)];
  # endif
      int rounds;
  };
  typedef struct aes_key_st AES_KEY;
  
  const char *AES_options(void);
  
  int AES_set_encrypt_key(const unsigned char *userKey, const int bits,
                          AES_KEY *key);
  int AES_set_decrypt_key(const unsigned char *userKey, const int bits,
                          AES_KEY *key);
  
  void AES_encrypt(const unsigned char *in, unsigned char *out,
                   const AES_KEY *key);
  void AES_decrypt(const unsigned char *in, unsigned char *out,
                   const AES_KEY *key);
  
  void AES_ecb_encrypt(const unsigned char *in, unsigned char *out,
                       const AES_KEY *key, const int enc);
  void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
                       size_t length, const AES_KEY *key,
                       unsigned char *ivec, const int enc);
  void AES_cfb128_encrypt(const unsigned char *in, unsigned char *out,
                          size_t length, const AES_KEY *key,
                          unsigned char *ivec, int *num, const int enc);
  void AES_cfb1_encrypt(const unsigned char *in, unsigned char *out,
                        size_t length, const AES_KEY *key,
                        unsigned char *ivec, int *num, const int enc);
  void AES_cfb8_encrypt(const unsigned char *in, unsigned char *out,
                        size_t length, const AES_KEY *key,
                        unsigned char *ivec, int *num, const int enc);
  void AES_ofb128_encrypt(const unsigned char *in, unsigned char *out,
                          size_t length, const AES_KEY *key,
                          unsigned char *ivec, int *num);
  # if !OPENSSL_API_3
  /* NB: the IV is _two_ blocks long */
  void AES_ige_encrypt(const unsigned char *in, unsigned char *out,
                       size_t length, const AES_KEY *key,
                       unsigned char *ivec, const int enc);
  /* NB: the IV is _four_ blocks long */
  void AES_bi_ige_encrypt(const unsigned char *in, unsigned char *out,
                          size_t length, const AES_KEY *key,
                          const AES_KEY *key2, const unsigned char *ivec,
                          const int enc);
  # endif
  
  int AES_wrap_key(AES_KEY *key, const unsigned char *iv,
                   unsigned char *out,
                   const unsigned char *in, unsigned int inlen);
  int AES_unwrap_key(AES_KEY *key, const unsigned char *iv,
                     unsigned char *out,
                     const unsigned char *in, unsigned int inlen);
  
  
  # ifdef  __cplusplus
  }
  # endif
  
  #endif
  