Acore::Crypto::ARC4 Class Reference

#include "ARC4.h"

Public Member Functions
	ARC4 ()
	~ARC4 ()
void	Init (uint8 const *seed, std::size_t len)
template<typename Container >
void	Init (Container const &c)
void	UpdateData (uint8 *data, std::size_t len)
template<typename Container >
void	UpdateData (Container &c)

Private Attributes
EVP_CIPHER *	_cipher
EVP_CIPHER_CTX *	_ctx

Detailed Description

Constructor & Destructor Documentation

ARC4()

Acore::Crypto::ARC4::ARC4

(

)

                      : _ctx(EVP_CIPHER_CTX_new())
{
    _cipher = EVP_CIPHER_fetch(nullptr, "RC4", nullptr);
 
    EVP_CIPHER_CTX_init(_ctx);
    int result = EVP_EncryptInit_ex(_ctx, _cipher, nullptr, nullptr, nullptr);
    ASSERT(result == 1);
}

References _cipher, _ctx, and ASSERT.

~ARC4()

Acore::Crypto::ARC4::~ARC4

(

)

{
    EVP_CIPHER_CTX_free(_ctx);
    EVP_CIPHER_free(_cipher);
}

Member Function Documentation

Init() [1/2]

template<typename Container >

void Acore::Crypto::ARC4::Init ( Container const &  c )

inline

{ Init(std::data(c), std::size(c)); }

References Init().

Referenced by Init().

Init() [2/2]

void Acore::Crypto::ARC4::Init	(	uint8 const *	seed,
		std::size_t	len
	)

{
    int result1 = EVP_CIPHER_CTX_set_key_length(_ctx, len);
    ASSERT(result1 == 1);
    int result2 = EVP_EncryptInit_ex(_ctx, nullptr, nullptr, seed, nullptr);
    ASSERT(result2 == 1);
}

References ASSERT.

Referenced by WardenMac::HandleHashResult(), WardenWin::HandleHashResult(), AuthCrypt::Init(), WardenMac::Init(), and WardenWin::Init().

UpdateData() [1/2]

template<typename Container >

void Acore::Crypto::ARC4::UpdateData ( Container &  c )

inline

{ UpdateData(std::data(c), std::size(c)); }

References UpdateData().

Referenced by UpdateData().

UpdateData() [2/2]

void Acore::Crypto::ARC4::UpdateData	(	uint8 *	data,
		std::size_t	len
	)

{
    int outlen = 0;
    int result1 = EVP_EncryptUpdate(_ctx, data, &outlen, data, len);
    ASSERT(result1 == 1);
    int result2 = EVP_EncryptFinal_ex(_ctx, data, &outlen);
    ASSERT(result2 == 1);
}

References ASSERT.

Referenced by Warden::DecryptData(), AuthCrypt::DecryptRecv(), Warden::EncryptData(), AuthCrypt::EncryptSend(), and AuthCrypt::Init().

Member Data Documentation

_cipher

EVP_CIPHER* Acore::Crypto::ARC4::_cipher

private

Referenced by ARC4().

_ctx

EVP_CIPHER_CTX* Acore::Crypto::ARC4::_ctx

private

Referenced by ARC4().