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/*
* DES
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_DES_H__
#define BOTAN_DES_H__
#include <botan/block_cipher.h>
namespace Botan {
/**
* DES
*/
class BOTAN_DLL DES : public BlockCipher
{
public:
void encrypt_n(const byte in[], byte out[], u32bit blocks) const;
void decrypt_n(const byte in[], byte out[], u32bit blocks) const;
void clear() { zeroise(round_key); }
std::string name() const { return "DES"; }
BlockCipher* clone() const { return new DES; }
DES() : BlockCipher(8, 8), round_key(32) {}
private:
void key_schedule(const byte[], u32bit);
SecureVector<u32bit> round_key;
};
/**
* Triple DES
*/
class BOTAN_DLL TripleDES : public BlockCipher
{
public:
void encrypt_n(const byte in[], byte out[], u32bit blocks) const;
void decrypt_n(const byte in[], byte out[], u32bit blocks) const;
void clear() { zeroise(round_key); }
std::string name() const { return "TripleDES"; }
BlockCipher* clone() const { return new TripleDES; }
TripleDES() : BlockCipher(8, 16, 24, 8), round_key(96) {}
private:
void key_schedule(const byte[], u32bit);
SecureVector<u32bit> round_key;
};
/*
* DES Tables
*/
extern const u32bit DES_SPBOX1[256];
extern const u32bit DES_SPBOX2[256];
extern const u32bit DES_SPBOX3[256];
extern const u32bit DES_SPBOX4[256];
extern const u32bit DES_SPBOX5[256];
extern const u32bit DES_SPBOX6[256];
extern const u32bit DES_SPBOX7[256];
extern const u32bit DES_SPBOX8[256];
extern const u64bit DES_IPTAB1[256];
extern const u64bit DES_IPTAB2[256];
extern const u64bit DES_FPTAB1[256];
extern const u64bit DES_FPTAB2[256];
}
#endif
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