private bool checkNPDHash2(byte[] klicensee, byte[] npd) { byte[] xoredKey = new byte[0x10]; ToolsImpl.XOR(xoredKey, klicensee, EDATKeys.npdrm_omac_key2); byte[] calculated = ToolsImpl.CMAC128(xoredKey, npd, 0, 0x60); bool result2 = compareBytes(calculated, 0, npd, 0x60, 0x10); if (result2) { Debug.WriteLine("NPD hash 2 is valid (" + ConversionUtils.getHexString(calculated) + ")"); } return(result2); }
private bool checkNPDHash1(String filename, byte[] npd) { byte[] fileBytes = ConversionUtils.charsToByte(filename.ToCharArray()); byte[] data1 = new byte[0x30 + fileBytes.Length]; ConversionUtils.arraycopy(npd, 0x10, data1, 0, 0x30); ConversionUtils.arraycopy(fileBytes, 0x00, data1, 0x30, fileBytes.Length); byte[] hash1 = ToolsImpl.CMAC128(EDATKeys.npdrm_omac_key3, data1, 0, data1.Length); bool result1 = compareBytes(hash1, 0, npd, 0x50, 0x10); if (result1) { Debug.WriteLine("NPD hash 1 is valid (" + ConversionUtils.getHexString(hash1) + ")"); } return(result1); }