Botan  1.11.15
src/lib/block/rc2/rc2.h
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00001 /*
00002 * RC2
00003 * (C) 1999-2007 Jack Lloyd
00004 *
00005 * Botan is released under the Simplified BSD License (see license.txt)
00006 */
00007 
00008 #ifndef BOTAN_RC2_H__
00009 #define BOTAN_RC2_H__
00010 
00011 #include <botan/block_cipher.h>
00012 
00013 namespace Botan {
00014 
00015 /**
00016 * RC2
00017 */
00018 class BOTAN_DLL RC2 : public Block_Cipher_Fixed_Params<8, 1, 32>
00019    {
00020    public:
00021       void encrypt_n(const byte in[], byte out[], size_t blocks) const;
00022       void decrypt_n(const byte in[], byte out[], size_t blocks) const;
00023 
00024       /**
00025       * Return the code of the effective key bits
00026       * @param bits key length
00027       * @return EKB code
00028       */
00029       static byte EKB_code(size_t bits);
00030 
00031       void clear();
00032       std::string name() const { return "RC2"; }
00033       BlockCipher* clone() const { return new RC2; }
00034    private:
00035       void key_schedule(const byte[], size_t);
00036 
00037       secure_vector<u16bit> K;
00038    };
00039 
00040 }
00041 
00042 #endif