/usr/include/botan-1.10/botan/arc4.h is in libbotan1.10-dev 1.10.16-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 | /*
* ARC4
* (C) 1999-2008 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_ARC4_H__
#define BOTAN_ARC4_H__
#include <botan/stream_cipher.h>
#include <botan/types.h>
namespace Botan {
/**
* Alleged RC4
*/
class BOTAN_DLL ARC4 : public StreamCipher
{
public:
void cipher(const byte in[], byte out[], size_t length);
void clear();
std::string name() const;
StreamCipher* clone() const { return new ARC4(SKIP); }
Key_Length_Specification key_spec() const
{
return Key_Length_Specification(1, 256);
}
/**
* @param skip skip this many initial bytes in the keystream
*/
ARC4(size_t skip = 0);
~ARC4() { clear(); }
private:
void key_schedule(const byte[], size_t);
void generate();
const size_t SKIP;
byte X, Y;
SecureVector<byte> state;
SecureVector<byte> buffer;
size_t position;
};
}
#endif
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