Botan  1.11.15
src/lib/block/des/des.h
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00001 /*
00002 * DES
00003 * (C) 1999-2007 Jack Lloyd
00004 *
00005 * Botan is released under the Simplified BSD License (see license.txt)
00006 */
00007 
00008 #ifndef BOTAN_DES_H__
00009 #define BOTAN_DES_H__
00010 
00011 #include <botan/block_cipher.h>
00012 
00013 namespace Botan {
00014 
00015 /**
00016 * DES
00017 */
00018 class BOTAN_DLL DES : public Block_Cipher_Fixed_Params<8, 8>
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       void clear();
00025       std::string name() const { return "DES"; }
00026       BlockCipher* clone() const { return new DES; }
00027    private:
00028       void key_schedule(const byte[], size_t);
00029 
00030       secure_vector<u32bit> round_key;
00031    };
00032 
00033 /**
00034 * Triple DES
00035 */
00036 class BOTAN_DLL TripleDES : public Block_Cipher_Fixed_Params<8, 16, 24, 8>
00037    {
00038    public:
00039       void encrypt_n(const byte in[], byte out[], size_t blocks) const;
00040       void decrypt_n(const byte in[], byte out[], size_t blocks) const;
00041 
00042       void clear();
00043       std::string name() const { return "TripleDES"; }
00044       BlockCipher* clone() const { return new TripleDES; }
00045    private:
00046       void key_schedule(const byte[], size_t);
00047 
00048       secure_vector<u32bit> round_key;
00049    };
00050 
00051 /*
00052 * DES Tables
00053 */
00054 extern const u32bit DES_SPBOX1[256];
00055 extern const u32bit DES_SPBOX2[256];
00056 extern const u32bit DES_SPBOX3[256];
00057 extern const u32bit DES_SPBOX4[256];
00058 extern const u32bit DES_SPBOX5[256];
00059 extern const u32bit DES_SPBOX6[256];
00060 extern const u32bit DES_SPBOX7[256];
00061 extern const u32bit DES_SPBOX8[256];
00062 
00063 extern const u64bit DES_IPTAB1[256];
00064 extern const u64bit DES_IPTAB2[256];
00065 extern const u64bit DES_FPTAB1[256];
00066 extern const u64bit DES_FPTAB2[256];
00067 
00068 }
00069 
00070 #endif