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   1 /*
   2 * AES Cryptographic Algorithm Header File. Include this header file in
   3 * your source which uses these given APIs. (This source is kept under
   4 * public domain)
   5 */
   6
   7 // AES context structure
   8 typedef struct {
   9  unsigned int Ek[60];
  10  unsigned int Dk[60];
  11  unsigned int Iv[4];
  12  unsigned char Nr;
  13  unsigned char Mode;
  14 } AesCtx;
  15
  16 // key length in bytes
  17 #define KEY128 16
  18 #define KEY192 24
  19 #define KEY256 32
  20 // block size in bytes
  21 #define BLOCKSZ 16
  22 // mode
  23 #define EBC 0
  24 #define CBC 1
  25
  26 // AES API function prototype
  27
  28 int AesCtxIni(AesCtx *pCtx, unsigned char *pIV, unsigned char *pKey, unsigned int KeyLen, unsigned char Mode);
  29 int AesEncrypt(AesCtx *pCtx, unsigned char *pData, unsigned char *pCipher, unsigned int DataLen);
  30 int AesDecrypt(AesCtx *pCtx, unsigned char *pCipher, unsigned char *pData, unsigned int CipherLen);