AuthCrypt Class Reference

#include "AuthCrypt.h"

Public Member Functions
	AuthCrypt ()=default
void	Init (SessionKey const &K)
void	DecryptRecv (uint8 *data, std::size_t len)
void	EncryptSend (uint8 *data, std::size_t len)
bool	IsInitialized () const

Private Attributes
Acore::Crypto::ARC4	_clientDecrypt
Acore::Crypto::ARC4	_serverEncrypt
bool	_initialized { false }

Detailed Description

Constructor & Destructor Documentation

AuthCrypt()

AuthCrypt::AuthCrypt ( )

default

Member Function Documentation

DecryptRecv()

void AuthCrypt::DecryptRecv	(	uint8 *	data,
		std::size_t	len
	)

{
    ASSERT(_initialized);
    _clientDecrypt.UpdateData(data, len);
}

References _clientDecrypt, _initialized, ASSERT, and Acore::Crypto::ARC4::UpdateData().

Referenced by WorldSocket::ReadHeaderHandler().

EncryptSend()

void AuthCrypt::EncryptSend	(	uint8 *	data,
		std::size_t	len
	)

{
    ASSERT(_initialized);
    _serverEncrypt.UpdateData(data, len);
}

References _initialized, _serverEncrypt, ASSERT, and Acore::Crypto::ARC4::UpdateData().

Referenced by WorldSocket::Update().

Init()

void AuthCrypt::Init

(

SessionKey const &

K

)

{
    uint8 ServerEncryptionKey[] = { 0xCC, 0x98, 0xAE, 0x04, 0xE8, 0x97, 0xEA, 0xCA, 0x12, 0xDD, 0xC0, 0x93, 0x42, 0x91, 0x53, 0x57 };
    _serverEncrypt.Init(Acore::Crypto::HMAC_SHA1::GetDigestOf(ServerEncryptionKey, K));
 
    uint8 ServerDecryptionKey[] = { 0xC2, 0xB3, 0x72, 0x3C, 0xC6, 0xAE, 0xD9, 0xB5, 0x34, 0x3C, 0x53, 0xEE, 0x2F, 0x43, 0x67, 0xCE };
    _clientDecrypt.Init(Acore::Crypto::HMAC_SHA1::GetDigestOf(ServerDecryptionKey, K));
 
    // Drop first 1024 bytes, as WoW uses ARC4-drop1024.
    std::array<uint8, 1024> syncBuf{};
    _serverEncrypt.UpdateData(syncBuf);
    _clientDecrypt.UpdateData(syncBuf);
 
    _initialized = true;
}

References _clientDecrypt, _initialized, _serverEncrypt, Acore::Impl::GenericHMAC< HashCreator, DigestLength >::GetDigestOf(), Acore::Crypto::ARC4::Init(), and Acore::Crypto::ARC4::UpdateData().

Referenced by WorldSocket::HandleAuthSessionCallback().

IsInitialized()

bool AuthCrypt::IsInitialized ( ) const

inline

{ return _initialized; }

Referenced by WorldSocket::ReadHeaderHandler(), and WorldSocket::SendPacket().

Member Data Documentation

_clientDecrypt

Acore::Crypto::ARC4 AuthCrypt::_clientDecrypt

private

Referenced by DecryptRecv(), and Init().

_initialized

bool AuthCrypt::_initialized { false }

private

Referenced by DecryptRecv(), EncryptSend(), and Init().

_serverEncrypt

Acore::Crypto::ARC4 AuthCrypt::_serverEncrypt

private

Referenced by EncryptSend(), and Init().