WorldPacketCrypt Class Reference

#include <WorldPacketCrypt.h>

Public Member Functions
	WorldPacketCrypt ()
void	Init (BigNumber *K) override
void	Init (BigNumber *k, uint8 const *serverKey, uint8 const *clientKey)
Public Member Functions inherited from PacketCrypt
	PacketCrypt (uint32 rc4InitSize)
virtual	~PacketCrypt ()
void	DecryptRecv (uint8 *data, size_t length)
void	EncryptSend (uint8 *data, size_t length)
bool	IsInitialized () const

Additional Inherited Members
Protected Attributes inherited from PacketCrypt
ARC4	_clientDecrypt
ARC4	_serverEncrypt
bool	_initialized

Constructor & Destructor Documentation

WorldPacketCrypt::WorldPacketCrypt

(

)

 : PacketCrypt(SHA_DIGEST_LENGTH)
{
}

Member Function Documentation

void WorldPacketCrypt::Init ( BigNumber *  K )

overridevirtual

Implements PacketCrypt.

{
 uint8 ServerEncryptionKey[SEED_KEY_SIZE] = { 0x08, 0xF1, 0x95, 0x9F, 0x47, 0xE5, 0xD2, 0xDB, 0xA1, 0x3D, 0x77, 0x8F, 0x3F, 0x3E, 0xE7, 0x00 };
 uint8 ServerDecryptionKey[SEED_KEY_SIZE] = { 0x40, 0xAA, 0xD3, 0x92, 0x26, 0x71, 0x43, 0x47, 0x3A, 0x31, 0x08, 0xA6, 0xE7, 0xDC, 0x98, 0x2A };
 Init(K, ServerEncryptionKey, ServerDecryptionKey);
}

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void WorldPacketCrypt::Init	(	BigNumber *	k,
		uint8 const *	serverKey,
		uint8 const *	clientKey
	)

{
 HmacSha1 serverEncryptHmac(SEED_KEY_SIZE, (uint8*)serverKey);
 uint8 *encryptHash = serverEncryptHmac.ComputeHash(k);

 HmacSha1 clientDecryptHmac(SEED_KEY_SIZE, (uint8*)clientKey);
 uint8 *decryptHash = clientDecryptHmac.ComputeHash(k);

 _clientDecrypt.Init(decryptHash);
 _serverEncrypt.Init(encryptHash);

 // Drop first 1024 bytes, as WoW uses ARC4-drop1024.
 uint8 syncBuf[1024];
 memset(syncBuf, 0, 1024);

 _serverEncrypt.UpdateData(1024, syncBuf);

 memset(syncBuf, 0, 1024);

 _clientDecrypt.UpdateData(1024, syncBuf);

 _initialized = true;
}

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

• src/common/Cryptography/Authentication/WorldPacketCrypt.h
• src/common/Cryptography/Authentication/WorldPacketCrypt.cpp