Function Reference


_Crypt_HashFile

Hash the contents of a file using a specified algorithm

#include <Crypt.au3>
_Crypt_HashFile ( $sFilePath, $iAlgID )

Parameters

$sFilePath Path to file to hash
$iAlgID Hash ID to use. See _Crypt_DeriveKey().

Return Value

Success: a hash of binary file.
Failure: sets the @error flag to non-zero.
@error: 1 - Failed to open file
10+ - Failed to hash final piece
100+ - Failed to get hash piece
1000+ _Crypt_Startup() failed

Related

_Crypt_HashData

Example

#include <ComboConstants.au3>
#include <Crypt.au3>
#include <GUIConstantsEx.au3>
#include <StringConstants.au3>

Example()

Func Example()
    Local $iAlgorithm = $CALG_SHA1

    Local $hGUI = GUICreate("Hash File", 500, 100)
    Local $idInput = GUICtrlCreateInput(@ScriptFullPath, 5, 5, 200, 20)
    Local $idBrowse = GUICtrlCreateButton("...", 210, 5, 35, 20)
    Local $idCombo = GUICtrlCreateCombo("", 250, 5, 100, 20, $CBS_DROPDOWNLIST)
    GUICtrlSetData($idCombo, "MD2 (128bit)|MD4 (128bit)|MD5 (128bit)|SHA1 (160bit)|SHA_256 (256bit)|SHA_384 (384bit)|SHA_512 (512bit)", "SHA1 (160bit)")
    Local $idCalculate = GUICtrlCreateButton("Calculate", 400, 40, 65, 25)
    Local $idHashLabel = GUICtrlCreateEdit("Hash Digest", 5, 45, 350, 40)
    GUISetState(@SW_SHOW, $hGUI)

    _Crypt_Startup() ; To optimize performance start the crypt library.

    Local $dHash = 0, _
            $sRead = ""
    While 1
        Switch GUIGetMsg()
            Case $GUI_EVENT_CLOSE
                ExitLoop

            Case $idBrowse
                Local $sFilePath = FileOpenDialog("Open a file", "", "All files (*.*)") ; Select a file to find the hash.
                If @error Then
                    ContinueLoop
                EndIf
                GUICtrlSetData($idInput, $sFilePath) ; Set the inputbox with the filepath.
                GUICtrlSetData($idHashLabel, "Hash Digest") ; Reset the hash digest label.

            Case $idCombo ; Check when the combobox is selected and retrieve the correct algorithm.
                Switch GUICtrlRead($idCombo) ; Read the combobox selection.
                    Case "MD2 (128bit)"
                        $iAlgorithm = $CALG_MD2

                    Case "MD4 (128bit)"
                        $iAlgorithm = $CALG_MD4

                    Case "MD5 (128bit)"
                        $iAlgorithm = $CALG_MD5

                    Case "SHA1 (160bit)"
                        $iAlgorithm = $CALG_SHA1

                    Case  "SHA_256 (256bit)"
                        $iAlgorithm = $CALG_SHA_256

                    Case "SHA_384 (384bit)"
                        $iAlgorithm = $CALG_SHA_384

                    Case "SHA_512 (512bit)"
                        $iAlgorithm = $CALG_SHA_512

                EndSwitch

            Case $idCalculate
                $sRead = GUICtrlRead($idInput)
                If StringStripWS($sRead, $STR_STRIPALL) <> "" And FileExists($sRead) Then ; Check there is a file available to find the hash digest
                    $dHash = _Crypt_HashFile($sRead, $iAlgorithm) ; Create a hash of the file.
                    GUICtrlSetData($idHashLabel, $dHash) ; Set the hash digest label with the hash data.
                EndIf
        EndSwitch
    WEnd

    GUIDelete($hGUI) ; Delete the previous GUI and all controls.
    _Crypt_Shutdown() ; Shutdown the crypt library.
EndFunc   ;==>Example