signed int PTEA_Decrypt(BYTE * DataDecrypt, int len, BYTE * DataCrypted, uint key[4])
{
	int v6; // ecx@2
	int v7; // eax@4
	uint v8; // ecx@4

	uint v10; // ecx@5
	uint v11; // eax@5
	uint v12; // ecx@5
	int v13; // esi@5
	uint v14; // ebx@5
	uint v15; // ecx@5
	int v16; // esi@5
	uint v17; // ebx@5

	uint DELTA;
	uint SUM;
	int NumberOfRound;
	uint NewLen;

	if (len > 0)
	{
		v6 = DataCrypted - DataDecrypt;
		NewLen = ((len - 1) >> 3) + 1;
		for (int i = DataCrypted - DataDecrypt;; v6 = i)
		{
			v7 = *(DWORD *)(v6 + DataDecrypt);
			v8 = *(DWORD *)(v6 + DataDecrypt + 4);
			*(DWORD *)DataDecrypt = v7;
			DataDecrypt[4] = v8;
			DELTA = 0xE3779B90;
			SUM   = 0x61C88647;
			NumberOfRound = 4;
			do
			{
				v10 = v8 - ((DELTA + *(&key[0] + ((DELTA >> 11) & 3))) ^ (*(DWORD *)DataDecrypt + ((*(DWORD *)DataDecrypt >> 5) ^ 16 * *(DWORD *)DataDecrypt)));
				v11 = DELTA + SUM;
				*(DWORD *)DataDecrypt -= (v11 + *(&key[0] + (v11 & 3))) ^ (v10 + ((v10 >> 5) ^ 16 * v10));
				v12 = v10
					- ((v11 + *(&key[0] + ((v11 >> 11) & 3))) ^ (*(DWORD *)DataDecrypt + ((*(DWORD *)DataDecrypt >> 5) ^ 16 * *(DWORD *)DataDecrypt)));
				v11 += SUM;
				v13 = *(DWORD *)DataDecrypt - ((v11 + *(&key[0] + (v11 & 3))) ^ (v12 + ((v12 >> 5) ^ 16 * v12)));
				v14 = *(DWORD *)DataDecrypt - ((v11 + *(&key[0] + (v11 & 3))) ^ (v12 + ((v12 >> 5) ^ 16 * v12)));
				*(DWORD *)DataDecrypt = v13;
				v15 = v12 - ((v11 + *(&key[0] + ((v11 >> 11) & 3))) ^ (v13 + ((v14 >> 5) ^ 16 * v13)));
				v11 += SUM;
				v16 = *(DWORD *)DataDecrypt - ((v11 + *(&key[0] + (v11 & 3))) ^ (v15 + ((v15 >> 5) ^ 16 * v15)));
				v17 = *(DWORD *)DataDecrypt - ((v11 + *(&key[0] + (v11 & 3))) ^ (v15 + ((v15 >> 5) ^ 16 * v15)));
				*(DWORD *)DataDecrypt = v16;
				v8 = v15 - ((v11 + *(&key[0] + ((v11 >> 11) & 3))) ^ (v16 + ((v17 >> 5) ^ 16 * v16)));
				DELTA = v11 + SUM;
				*(DWORD *)DataDecrypt -= (DELTA + *(&key[0] + (DELTA & 3))) ^ (v8 + ((v8 >> 5) ^ 16 * v8));

				--NumberOfRound;
			}
			while (NumberOfRound);

			*(DWORD *)(DataDecrypt + 4) = v8;

			DataDecrypt += 8;

			if (!--NewLen)
				break;
		}
	}
	return 8;
}