GrayLib::cCipherRC4 Class Reference

#include <cCipherRC4.h>

Inheritance diagram for GrayLib::cCipherRC4:

Public Member Functions
	cCipherRC4 (bool bEncodeMode=true)
	cCipherRC4 (bool bEncodeMode, const void *pKeyData, size_t nKeySize)
virtual	~cCipherRC4 (void)
virtual HRESULT	SetCipherKey (const void *pKeyData=nullptr, size_t nKeySize=0) override
virtual HRESULT	Cipher (BYTE *pOutput, const BYTE *pInput, size_t nSizeBytes) override
	Bi directional / symmetrical crypt and decrypt. More...
	UNITTEST_FRIEND (cCipherRC4)
Public Member Functions inherited from GrayLib::cCipherBase
	cCipherBase (bool bEncodeMode=true, CIPHER_BLOCK_TYPE eBlockMode=CIPHER_BLOCK_UNK) noexcept
virtual	~cCipherBase ()
void	put_EncodeMode (bool bEncodeMode) noexcept
bool	get_EncodeMode () const noexcept
void	put_BlockMode (CIPHER_BLOCK_TYPE eBlockMode) noexcept
virtual size_t	get_BlockAlignSize () const override
virtual HRESULT	CipherModeECB (BYTE *pOutput, const BYTE *pInput)
virtual HRESULT	CipherModeCBC (BYTE *pOutput, const BYTE *pInput, size_t nSize, BYTE *pIV)
virtual HRESULT	CipherModeCFB (BYTE *pOutput, const BYTE *pInput, size_t nSize, BYTE *pIV, size_t *pIVOffset)
virtual HRESULT	CipherModeCTR (BYTE *pOutput, const BYTE *pInput, size_t nSize, BYTE *pNonceCounter, size_t *pNCOffset, BYTE *pStreamBlock)
Public Member Functions inherited from Gray::CObject
virtual	~CObject ()
virtual bool	isValidCheck () const noexcept
	< memory allocation and structure definitions are valid. More...
virtual void	AssertValid () const
	< memory allocation and structure definitions are valid. More...
virtual void	Serialize (cArchive &a)

Protected Attributes
int	m_x
	x permutation index More...
int	m_y
	y permutation index More...
BYTE	m_Sbox [256]
	state. permutation table More...
Protected Attributes inherited from GrayLib::cCipherBase
bool	m_bEncodeMode
	We are in encode/encrypt mode vs decode/decrypt mode. More...
CIPHER_BLOCK_TYPE	m_eBlockMode
	Cipher block mode. How are sequences of blocks treated? More...

Additional Inherited Members
Static Public Member Functions inherited from GrayLib::cCipherBase
static size_t GRAYCALL	CopyFillX (void *pOutput, size_t nOutSize, const void *pInput, size_t nInputSize)

Detailed Description

Compatible with RSA RC4 AKA ARC4 used in Secure Sockets Layer (SSL) and WEP. Declared NOT safe in 2015. Not as good as Blowfish but has no BlockAlignSize. http://groups.google.com/group/sci.crypt/msg/10a300c9d21afca0

Constructor & Destructor Documentation

cCipherRC4() [1/2]

GrayLib::cCipherRC4::cCipherRC4

(

bool

bEncodeMode = true

)

cCipherRC4() [2/2]

GrayLib::cCipherRC4::cCipherRC4	(	bool	bEncodeMode,
		const void *	pKeyData,
		size_t	nKeySize
	)

~cCipherRC4()

GrayLib::cCipherRC4::~cCipherRC4 ( void  )

virtual

Member Function Documentation

Cipher()

HRESULT GrayLib::cCipherRC4::Cipher ( BYTE *  pOutput, const BYTE *  pInput, size_t  nSizeBytes  )

overridevirtual

Bi directional / symmetrical crypt and decrypt.

Symmetrical crypt and decrypt.

• pOutput = buffer for the output data
• pInput = buffer holding the input data
• nSize = length of the input data

  Returns

  Amount of data i could process. <0 = error.

Reimplemented from GrayLib::cCipherBase.

SetCipherKey()

HRESULT GrayLib::cCipherRC4::SetCipherKey ( const void *  pKeyData = nullptr, size_t  nKeySize = 0  )

overridevirtual

create a fairly simple key based SBox. key schedule.

• pKeyData = set cipher key. Fix it if unaligned.
• nKeySize = length of the key, in bytes

Reimplemented from GrayLib::cCipherBase.

UNITTEST_FRIEND()

GrayLib::cCipherRC4::UNITTEST_FRIEND

(

cCipherRC4

)

Member Data Documentation

m_Sbox

BYTE GrayLib::cCipherRC4::m_Sbox[256]

protected

state. permutation table

m_x

int GrayLib::cCipherRC4::m_x

protected

x permutation index

m_y

int GrayLib::cCipherRC4::m_y

protected

y permutation index

---

The documentation for this class was generated from the following files:

• c:/Dennis/Source/Gray/GrayLib/include/Cipher/cCipherRC4.h
• c:/Dennis/Source/Gray/GrayLib/src/Cipher/cCipherRC4.cpp