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POHow folder locking works
 

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    <p>As windows doesn't provide password protection for individual folder, there are many third party software like 'Folder Lock' that does the job. I wanted to know the logic behind these kind of applications and found one code like this: <a href="http://code.google.com/p/lock-a-folder/source/browse/lock-a-folder.au3" rel="nofollow">'lock-a-folder'</a>. This is an AutoIt script which I am not familiar with. However, I just want to know the logic used here. </p> <p>These are the main functions of the script I am interested in:</p> <pre><code>Func Lock($slected) Local $Temp,$TempFile If @error or $slected = "" Then Return("Empty selection/Cancel Pressed") If Not FileExists($slected) Then MsgBox(0, $AppName, $slected &amp; " " &amp; Lang('doesntexist'), 0, $WIN1) Return('doesntexist') EndIf Local $l0ckd = RegRead("HKEY_CURRENT_USER\SOFTWARE\" &amp; $AppName, "lockedfolders") _DebugOut('RegRead("HKEY_CURRENT_USER\SOFTWARE\" &amp; $AppName, "lockedfolders") = ' &amp; $l0ckd) If Not StringInStr($l0ckd, $slected &amp; ".{90F8C996-7C70-4331-9D70-FB357D559FD5}|") = 0 Then MsgBox(0, $AppName, $slected &amp; " " &amp; Lang('alreadyinlist'), 0, $WIN1) Return('alreadyinlist') EndIf If $CmdLine[0] = 0 Then GUICtrlSetData($List1, "") GUICtrlSetData($List1, Lang('plzwait') &amp; "....") GUISetState(@SW_DISABLE) EndIf _DebugOut($slected) If $CmdLine[0] = 0 Then GUISetState(@SW_ENABLE) If DirMove($slected, $slected &amp; ".{90F8C996-7C70-4331-9D70-FB357D559FD5}") = 0 Then FileSetAttrib($slected, "-RSH") MsgBox(0, $AppName, $slected &amp; " " &amp; Lang('unable2lock'), 0, $WIN1) If $CmdLine[0] = 0 Then Readfolders() Return('unable2lock') EndIf $slected = $slected &amp; ".{90F8C996-7C70-4331-9D70-FB357D559FD5}" FileSetAttrib($slected, "+RSH") $l0ckd &amp;= $slected &amp; "|" _DebugOut("$l0ckd &amp;= $slected| = " &amp; $l0ckd) $debug = RegWrite("HKEY_CURRENT_USER\SOFTWARE\" &amp; $AppName, "lockedfolders", "REG_SZ", $l0ckd) _DebugOut('RegWrite("HKEY_CURRENT_USER\SOFTWARE\" &amp; $AppName, "lockedfolders", "REG_SZ", $l0ckd) = ' &amp; $debug) If $CmdLine[0] = 0 Then Readfolders() Return("Done") EndFunc ;==&gt;Lock Func UnLock($slected) _DebugOut($slected) If $slected = "" Or @error Then MsgBox(0, $AppName, Lang('selectfirst'), 0, $WIN1) Return("Empty selection/Cancel Pressed") EndIf If $CmdLine[0] = 0 Then GUICtrlSetData($List1, "") GUICtrlSetData($List1, Lang('plzwait') &amp; "....") GUISetState(@SW_DISABLE) EndIf Local $Temp = StringReplace($slected, ".{90F8C996-7C70-4331-9D70-FB357D559FD5}", "", 0, 2) _DebugOut("$Temp = " &amp; $Temp) FileSetAttrib($slected, "-RSH") Local $Temp1 $Temp1 = DirMove($slected, $Temp) If $CmdLine[0] = 0 Then GUISetState(@SW_ENABLE) If $Temp1 = 0 Then $Temp1 = DirMove($slected, $Temp &amp; ".recovered") EndIf If $Temp1 = 0 Then MsgBox(0, $AppName, $slected &amp; " " &amp; Lang('unable2unlock'), 0, $WIN1) If $CmdLine[0] = 0 Then Readfolders() Return('unable2unlock') EndIf Local $l0ckd = RegRead("HKEY_CURRENT_USER\SOFTWARE\" &amp; $AppName, "lockedfolders") _DebugOut('RegRead("HKEY_CURRENT_USER\SOFTWARE\" &amp; $AppName, "lockedfolders") = ' &amp; $l0ckd) $Temp = StringReplace($l0ckd, $slected &amp; "|", "") _DebugOut('StringReplace($l0ckd, $slected &amp; "|", "")' &amp; " = " &amp; $Temp) $debug = RegWrite("HKEY_CURRENT_USER\SOFTWARE\" &amp; $AppName, "lockedfolders", "REG_SZ", $Temp) _DebugOut('RegWrite("HKEY_CURRENT_USER\SOFTWARE\" &amp; $AppName, "lockedfolders", "REG_SZ", $l0ckd) = ' &amp; $debug) If $CmdLine[0] = 0 Then Readfolders() Return("Done") EndFunc ;==&gt;UnLock </code></pre> <p>Can anybody please tell me the logic?</p>
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    1. COI could be wrong but it looks like the script simply copies the folder to some "hidden" location, and move it back when you type a password.
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    2. COYou are right @Laurent. Renaming the folder to something like this also works:_“Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}”_. But here it seems the absolute folder path is appended to some registry value. So it works for multiple folders. If it is copying the folder to a hidden location, then how to create a location like that? I want a script/program that will lock/hide completely any number of folder I want. Please help..
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