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tomrus88 2009-03-08 14:35:15 +03:00
parent 8f9849969b
commit 2626d8c243
7 changed files with 77 additions and 53 deletions
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61
src/shared/Auth/AuthCrypt.cpp
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@ -18,6 +18,8 @@
#include "AuthCrypt.h"
#include "Hmac.h"
#include "Log.h"
#include "BigNumber.h"
AuthCrypt::AuthCrypt()
{
@ -31,32 +33,51 @@ AuthCrypt::~AuthCrypt()
void AuthCrypt::Init(BigNumber *K)
{
uint8 recvSeed[SEED_KEY_SIZE] = { 0x22, 0xBE, 0xE5, 0xCF, 0xBB, 0x07, 0x64, 0xD9, 0x00, 0x45, 0x1B, 0xD0, 0x24, 0xB8, 0xD5, 0x45 };
HmacHash recvHash(SEED_KEY_SIZE, (uint8*)recvSeed);
recvHash.UpdateBigNumber(K);
recvHash.Finalize();
sLog.outDebug("SessionKey: %s", K->AsHexStr());
uint8 sendSeed[SEED_KEY_SIZE] = { 0xF4, 0x66, 0x31, 0x59, 0xFC, 0x83, 0x6E, 0x31, 0x31, 0x02, 0x51, 0xD5, 0x44, 0x31, 0x67, 0x98 };
HmacHash sendHash(SEED_KEY_SIZE, (uint8*)sendSeed);
sendHash.UpdateBigNumber(K);
sendHash.Finalize();
uint8 ServerEncryptionKey[SEED_KEY_SIZE] = { 0x22, 0xBE, 0xE5, 0xCF, 0xBB, 0x07, 0x64, 0xD9, 0x00, 0x45, 0x1B, 0xD0, 0x24, 0xB8, 0xD5, 0x45 };
HmacHash serverEncryptHmac(SEED_KEY_SIZE, (uint8*)ServerEncryptionKey);
uint8 *encryptHash = serverEncryptHmac.ComputeHash(K);
_recvCrypt.Init(recvHash.GetDigest(), sendHash.GetDigest());
_sendCrypt.Init(recvHash.GetDigest(), sendHash.GetDigest());
BigNumber eh;
eh.SetBinary(encryptHash, SHA_DIGEST_LENGTH);
sLog.outDebug("EncryptHash: %s", eh.AsHexStr());
uint8 emptyBuf1[1024];
memset(emptyBuf1, 0, 1024);
uint8 ServerDecryptionKey[SEED_KEY_SIZE] = { 0xF4, 0x66, 0x31, 0x59, 0xFC, 0x83, 0x6E, 0x31, 0x31, 0x02, 0x51, 0xD5, 0x44, 0x31, 0x67, 0x98 };
HmacHash clientDecryptHmac(SEED_KEY_SIZE, (uint8*)ServerDecryptionKey);
uint8 *decryptHash = clientDecryptHmac.ComputeHash(K);
_sendCrypt.Encrypt(1024, (uint8*)emptyBuf1);
_sendCrypt.Decrypt(1024, (uint8*)emptyBuf1);
BigNumber dh;
dh.SetBinary(decryptHash, SHA_DIGEST_LENGTH);
sLog.outDebug("DecryptHash: %s", dh.AsHexStr());
uint8 emptyBuf2[1024];
memset(emptyBuf2, 0, 1024);
SARC4 _serverDecrypt(encryptHash);
_clientDecrypt.Init(decryptHash);
_serverEncrypt.Init(encryptHash);
SARC4 _clientEncrypt(decryptHash);
_recvCrypt.Encrypt(1024, (uint8*)emptyBuf2);
_recvCrypt.Decrypt(1024, (uint8*)emptyBuf2);
uint8 *syncBuf = new uint8[1024];
memset(syncBuf, 0, 1024);
_serverEncrypt.UpdateData(1024, syncBuf);
_clientEncrypt.UpdateData(1024, syncBuf);
BigNumber b1;
b1.SetBinary(syncBuf, 16);
sLog.outDebug("buf1: %s", b1.AsHexStr());
memset(syncBuf, 0, 1024);
_serverDecrypt.UpdateData(1024, syncBuf);
_clientDecrypt.UpdateData(1024, syncBuf);
BigNumber b2;
b2.SetBinary(syncBuf, 16);
sLog.outDebug("buf2: %s", b2.AsHexStr());
_initialized = true;
delete[] syncBuf;
}
void AuthCrypt::DecryptRecv(uint8 *data, size_t len)
@ -64,7 +85,7 @@ void AuthCrypt::DecryptRecv(uint8 *data, size_t len)
if (!_initialized)
return;
_recvCrypt.Decrypt(len, data);
_clientDecrypt.UpdateData(len, data);
}
void AuthCrypt::EncryptSend(uint8 *data, size_t len)
@ -72,5 +93,5 @@ void AuthCrypt::EncryptSend(uint8 *data, size_t len)
if (!_initialized)
return;
_sendCrypt.Encrypt(len, data);
_serverEncrypt.UpdateData(len, data);
}