tc/crypto/Twofish.h

   1 #ifndef TWOFISH_H
   2 #define TWOFISH_H
   3
   4 #if defined(__cplusplus)
   5 extern "C"
   6 {
   7 #endif
   8
   9 #ifndef u4byte
  10 #define u4byte  unsigned __int32
  11 #endif
  12 #ifndef u1byte
  13 #define u1byte  unsigned char
  14 #endif
  15
  16 #ifndef extract_byte
  17 #define extract_byte(x,n)   ((u1byte)((x) >> (8 * n)))
  18 #endif
  19
  20 #ifndef rotl
  21
  22 #ifdef _WIN32
  23 #include <stdlib.h>
  24 #pragma intrinsic(_lrotr,_lrotl)
  25 #define rotr(x,n) _lrotr(x,n)
  26 #define rotl(x,n) _lrotl(x,n)
  27 #else
  28 #define rotr(x,n) (((x)>>(n))|((x)<<(32-(n))))
  29 #define rotl(x,n) (((x)<<(n))|((x)>>(32-(n))))
  30 #endif
  31
  32 #endif
  33 typedef struct
  34 {
  35         u4byte l_key[40];
  36         u4byte s_key[4];
  37 #if !defined (TC_MINIMIZE_CODE_SIZE) || defined (TC_WINDOWS_BOOT_TWOFISH)
  38         u4byte mk_tab[4 * 256];
  39 #endif
  40         u4byte k_len;
  41 } TwofishInstance;
  42
  43 #define TWOFISH_KS              sizeof(TwofishInstance)
  44
  45 u4byte * twofish_set_key(TwofishInstance *instance, const u4byte in_key[], const u4byte key_len);
  46 void twofish_encrypt(TwofishInstance *instance, const u4byte in_blk[4], u4byte out_blk[]);
  47 void twofish_decrypt(TwofishInstance *instance, const u4byte in_blk[4], u4byte out_blk[4]);
  48
  49 #if defined(__cplusplus)
  50 }
  51 #endif
  52
  53 #endif // TWOFISH_H