WorldPacket auth;
        for(uint32 i = 0; i <= 7; ++i)
            auth << uint8(0); // digest
        auth << uint32(0);
        auth << uint8(0); // digest
        auth << uint64(0);
        auth << uint32(0);
        auth << uint8(0); // digest
        auth << uint8(0);
        auth << uint16(0); // digest
        auth << clientseed_uint32;
        auth << uint32(0);
        for(uint32 i = 0; i <= 6; ++i)
            auth << uint8(0); // digest

        logdebug("ServerSeed: %u, ClientSeed: %u, Build: %u",serverseed,clientseed_uint32,GetInstance()->GetConf()->clientbuild);
        auth << uint16(13623);
        auth << uint8(0); // digest
        auth << uint8(0);
        auth << uint32(0);
        auth << uint16(0); // digest
        //auth<<(uint32)(GetInstance()->GetConf()->clientbuild)<<unk<<acc<<unk<<clientseed_uint32<<unk<<unk<<unk<<unk64;
        //auth.append(digest.GetDigest(),20);
        auth << uint32(0); // TODO: this is not correct value, expected: 160 bytes of addon_data
        auth << std::string(GetInstance()->GetConf()->accname);