91 lines
1.7 KiB
C
91 lines
1.7 KiB
C
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/*
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----
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blowfish.h interface file for blowfish.cpp
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THE BLOWFISH ENCRYPTION ALGORITHM
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by Bruce Schneier
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Revised code--3/20/94
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Converted to C++ class 5/96, Jim Conger
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----
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*/
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#ifndef BLOWFISH_H
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#define BLOWFISH_H
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#include <stdint.h>
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#define MAXKEYBYTES 56 // 448 bits max
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#define NPASS 16 // SBox passes
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#define DWORD uint32_t
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#define WORD uint16_t
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#define BYTE uint8_t
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class CBlowFish
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{
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private:
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DWORD * PArray ;
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DWORD (* SBoxes)[256];
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void Blowfish_encipher (DWORD *xl, DWORD *xr) ;
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void Blowfish_decipher (DWORD *xl, DWORD *xr) ;
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public:
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CBlowFish () ;
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~CBlowFish () ;
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void Initialize (BYTE key[], int keybytes) ;
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DWORD GetOutputLength (DWORD lInputLong) ;
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DWORD Encode (BYTE * pInput, BYTE * pOutput, DWORD lSize) ;
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void Decode (BYTE * pInput, BYTE * pOutput, DWORD lSize) ;
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} ;
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// choose a byte order for your hardware
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#define ORDER_DCBA // chosing Intel in this case
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#ifdef ORDER_DCBA // DCBA - little endian - intel
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union aword {
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DWORD dword;
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BYTE byte [4];
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struct {
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unsigned int byte3:8;
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unsigned int byte2:8;
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unsigned int byte1:8;
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unsigned int byte0:8;
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} w;
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};
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#endif
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#ifdef ORDER_ABCD // ABCD - big endian - motorola
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union aword {
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DWORD dword;
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BYTE byte [4];
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struct {
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unsigned int byte0:8;
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unsigned int byte1:8;
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unsigned int byte2:8;
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unsigned int byte3:8;
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} w;
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};
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#endif
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#ifdef ORDER_BADC // BADC - vax
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union aword {
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DWORD dword;
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BYTE byte [4];
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struct {
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unsigned int byte1:8;
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unsigned int byte0:8;
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unsigned int byte3:8;
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unsigned int byte2:8;
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} w;
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};
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#endif
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#endif
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