ctaes.h raw

   1   /*********************************************************************
   2   * Copyright (c) 2016 Pieter Wuille                                   *
   3   * Distributed under the MIT software license, see the accompanying   *
   4   * file COPYING or http://www.opensource.org/licenses/mit-license.php.*
   5   **********************************************************************/
   6  
   7  #ifndef _CTAES_H_
   8  #define _CTAES_H_ 1
   9  
  10  #include <stdint.h>
  11  #include <stdlib.h>
  12  
  13  typedef struct {
  14      uint16_t slice[8];
  15  } AES_state;
  16  
  17  typedef struct {
  18      AES_state rk[11];
  19  } AES128_ctx;
  20  
  21  typedef struct {
  22      AES_state rk[13];
  23  } AES192_ctx;
  24  
  25  typedef struct {
  26      AES_state rk[15];
  27  } AES256_ctx;
  28  
  29  void AES128_init(AES128_ctx* ctx, const unsigned char* key16);
  30  void AES128_encrypt(const AES128_ctx* ctx, size_t blocks, unsigned char* cipher16, const unsigned char* plain16);
  31  void AES128_decrypt(const AES128_ctx* ctx, size_t blocks, unsigned char* plain16, const unsigned char* cipher16);
  32  
  33  void AES192_init(AES192_ctx* ctx, const unsigned char* key24);
  34  void AES192_encrypt(const AES192_ctx* ctx, size_t blocks, unsigned char* cipher16, const unsigned char* plain16);
  35  void AES192_decrypt(const AES192_ctx* ctx, size_t blocks, unsigned char* plain16, const unsigned char* cipher16);
  36  
  37  void AES256_init(AES256_ctx* ctx, const unsigned char* key32);
  38  void AES256_encrypt(const AES256_ctx* ctx, size_t blocks, unsigned char* cipher16, const unsigned char* plain16);
  39  void AES256_decrypt(const AES256_ctx* ctx, size_t blocks, unsigned char* plain16, const unsigned char* cipher16);
  40  
  41  #endif
  42