1#ifndef CRYPTOPP_RC5_H
2#define CRYPTOPP_RC5_H
3
4/** \file
5*/
6
7#include "seckey.h"
8#include "secblock.h"
9
10NAMESPACE_BEGIN(CryptoPP)
11
12//! _
13struct RC5_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 0, 255>, public VariableRounds<16>
14{
15	static const char *StaticAlgorithmName() {return "RC5";}
16	typedef word32 RC5_WORD;
17};
18
19/// <a href="http://www.weidai.com/scan-mirror/cs.html#RC5">RC5</a>
20class RC5 : public RC5_Info, public BlockCipherDocumentation
21{
22	class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<RC5_Info>
23	{
24	public:
25		void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params);
26
27	protected:
28		unsigned int r;       // number of rounds
29		SecBlock<RC5_WORD> sTable;  // expanded key table
30	};
31
32	class CRYPTOPP_NO_VTABLE Enc : public Base
33	{
34	public:
35		void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
36	};
37
38	class CRYPTOPP_NO_VTABLE Dec : public Base
39	{
40	public:
41		void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
42	};
43
44public:
45	typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
46	typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
47};
48
49typedef RC5::Encryption RC5Encryption;
50typedef RC5::Decryption RC5Decryption;
51
52NAMESPACE_END
53
54#endif
55