BlockCipher.h

00001 #ifndef BLOCK_CIPHER_H
00002 #define BLOCK_CIPHER_H
00003 
00004 #include "Cipher.h"
00005 
00006 enum BLOCK_CIPHER_MODE
00007 {
00008     ECB_MODE,
00009     CBC_MODE,
00010     PCBC_MODE
00011 };
00012 
00013 class BlockCipher : public Cipher
00014 {
00015     public :
00016     
00017         BlockCipher(uint32_t bs, BLOCK_CIPHER_MODE m, uint8_t *iv = 0);
00018         virtual ~BlockCipher();
00019         
00020         virtual CIPHER_TYPE getType() const;        
00021         uint32_t getBlockSize() const;
00022         void setIV(uint8_t *iv);
00023 
00024         virtual void encrypt(uint8_t *out, uint8_t *in, uint32_t length);        
00025         virtual void decrypt(uint8_t *out, uint8_t *in, uint32_t length);        
00026 
00027     protected :
00028     
00029         virtual void encryptBlock(uint8_t *out, uint8_t *in) = 0;
00030         virtual void decryptBlock(uint8_t *out, uint8_t *in) = 0;
00031 
00032     private :
00033     
00034         uint32_t blockSize;
00035         BLOCK_CIPHER_MODE mode;
00036         uint8_t *IV;
00037         uint8_t *tmpIV;
00038         uint8_t *tmpdatain;
00039         uint8_t *tmpdata;
00040 };
00041 
00042 #endif