Secure Word Data Obfuscation

Initialize the macro and declare variables

Sub ObfuscateWordData()
    ' Obfuscates numbers while preserving Word document structure
    ' Only modifies constant numeric values, not text formatting
    
    Dim doc As Document
    Dim para As Paragraph
    Dim rng As Range
    Dim processedItems As Long
    Dim startTime As Double
    
    ' Start timing for performance measurement
    startTime = Timer
    
    ' Show progress indicator to user
    Application.DisplayAlerts = False
    Application.StatusBar = "Starting obfuscation process..."

Process each paragraph and range

    ' Process the active document
    Set doc = ActiveDocument
    
    ' Process each paragraph in the document
    For Each para In doc.Paragraphs
        Application.StatusBar = "Processing paragraph: " & para.Range.Start
        
        ' Get the text range to process
        Set rng = para.Range
        
        ' Check for numeric content and obfuscate
        ' (In a real implementation, we would parse the text and only
        ' modify numbers while preserving formatting)
        If IsNumeric(rng.Text) Then
            rng.Text = ObfuscateNumber(CDbl(rng.Text))
            processedItems = processedItems + 1
        End If
    Next para

Show completion statistics

    ' Reset application settings and show completion message
    Application.StatusBar = False
    Application.DisplayAlerts = True
    
    ' Display completion message with statistics
    MsgBox "Obfuscation complete!" & vbCrLf & _
           processedItems & " items processed in " & _
           Format(Timer - startTime, "0.00") & " seconds." & vbCrLf & vbCrLf & _
           "Your document structure and formatting are preserved, but the" & _
           " numeric values have been obfuscated.", vbInformation
End Sub

Obfuscation function - transforms numbers while preserving magnitude

Function ObfuscateNumber(originalValue As Double) As Double
    ' This function transforms a number while preserving its magnitude
    ' The obfuscated number will have the same number of digits and similar scale
    
    Dim magnitude As Double
    Dim sign As Integer
    Dim randomFactor As Double
    
    ' Preserve the sign of the original number
    sign = Sgn(originalValue)
    
    ' Special case for zero
    If originalValue = 0 Then
        ObfuscateNumber = 0
        Exit Function
    End If
    
    ' Get the magnitude of the number
    magnitude = Abs(originalValue)
    
    ' Generate a random factor between 0.7 and 1.3 to vary the number
    ' but keep it in the same general magnitude
    randomFactor = 0.7 + (Rnd * 0.6)
    
    ' Return the obfuscated value with the same sign
    ObfuscateNumber = sign * magnitude * randomFactor
    
    ' Round to preserve approximate decimal places of original
    ObfuscateNumber = Round(ObfuscateNumber, CountDecimalPlaces(originalValue))
End Function

Helper function to count decimal places

Function CountDecimalPlaces(value As Double) As Integer
    ' Determine how many decimal places the original number has
    Dim strValue As String
    Dim decimalPos As Integer
    
    ' Convert to string and find decimal position
    strValue = CStr(value)
    decimalPos = InStr(strValue, ".")
    
    ' If no decimal point, return 0
    If decimalPos = 0 Then
        CountDecimalPlaces = 0
    Else
        ' Return the number of characters after the decimal
        CountDecimalPlaces = Len(strValue) - decimalPos
    End If
End Function