text: /* crypto/aes/aes.h -*- mode:C; c-file-style: "eay" -*- */
  /* ====================================================================
   * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer. 
   *
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   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
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   *    software must display the following acknowledgment:
   *    "This product includes software developed by the OpenSSL Project
   *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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   *    endorse or promote products derived from this software without
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   * 6. Redistributions of any form whatsoever must retain the following
   *    acknowledgment:
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   *
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   * ====================================================================
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   */
  
  #ifndef HEADER_AES_H
  #define HEADER_AES_H
  
  #include <openssl/opensslconf.h>
  
  #ifdef OPENSSL_NO_AES
  #error AES is disabled.
  #endif
  
  #include <stddef.h>
  
  #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
  
  #ifdef  __cplusplus
  extern "C" {
  #endif
  
  /* 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);
  void AES_ctr128_encrypt(const unsigned char *in, unsigned char *out,
  	size_t length, const AES_KEY *key,
  	unsigned char ivec[AES_BLOCK_SIZE],
  	unsigned char ecount_buf[AES_BLOCK_SIZE],
  	unsigned int *num);
  /* 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);
  
  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 /* !HEADER_AES_H */
  