How to encrypt/decrypt selected cells in Excel?
In some cases, you may want to encrypt some cells for preventing the cells viewed by other users, how can you get it done quickly? Now in this article, I introduce the tricks to quickly encrypt and decrypt selected cell contents in Excel.
Encrypt or decrypt selected cells with VBA
Encrypt or decrypt select cells with Kutools for Excel 
Encrypt or decrypt selected cells with VBA
Here is a VBA code that can quickly encrypt or decrypt selected cells in Excel.
1. Press Alt + F11 keys to display Microsoft Visual Basic for Applications window.
2. Click Insert > Module, and paste below VBA code to the new Module window.
VBA: Encrypt or decrypt selected cells.
Private Function StrToPsd(ByVal Txt As String) As Long
'UpdatebyKutoolsforExcel20151225
Dim xVal As Long
Dim xCh As Long
Dim xSft1 As Long
Dim xSft2 As Long
Dim I As Integer
Dim xLen As Integer
xLen = Len(Txt)
For I = 1 To xLen
xCh = Asc(Mid$(Txt, I, 1))
xVal = xVal Xor (xCh * 2 ^ xSft1)
xVal = xVal Xor (xCh * 2 ^ xSft2)
xSft1 = (xSft1 + 7) Mod 19
xSft2 = (xSft2 + 13) Mod 23
Next I
StrToPsd = xVal
End Function
Private Function Encryption(ByVal Psd As String, ByVal InTxt As String, Optional ByVal Enc As Boolean = True) As String
Dim xOffset As Long
Dim xLen As Integer
Dim I As Integer
Dim xCh As Integer
Dim xOutTxt As String
xOffset = StrToPsd(Psd)
Rnd -1
Randomize xOffset
xLen = Len(InTxt)
For I = 1 To xLen
xCh = Asc(Mid$(InTxt, I, 1))
If xCh >= 32 And xCh <= 126 Then
xCh = xCh - 32
xOffset = Int((96) * Rnd)
If Enc Then
xCh = ((xCh + xOffset) Mod 95)
Else
xCh = ((xCh - xOffset) Mod 95)
If xCh < 0 Then xCh = xCh + 95
End If
xCh = xCh + 32
xOutTxt = xOutTxt & Chr$(xCh)
End If
Next I
Encryption = xOutTxt
End Function
Sub EncryptionRange()
Dim xRg As Range
Dim xPsd As String
Dim xTxt As String
Dim xEnc As Boolean
Dim xRet As Variant
Dim xCell As Range
On Error Resume Next
xTxt = ActiveWindow.RangeSelection.Address
Set xRg = Application.InputBox("Select a range:", "Kutools for Excel", xTxt, , , , , 8)
Set xRg = Application.Intersect(xRg, xRg.Worksheet.UsedRange)
If xRg Is Nothing Then Exit Sub
xPsd = InputBox("Enter password:", "Kutools for Excel")
If xPsd = "" Then
MsgBox "Password cannot be empty", , "Kutools for Excel"
Exit Sub
End If
xRet = Application.InputBox("Type 1 to encrypt cell(s);Type 2 to decrypt cell(s)", "Kutools for Excel", , , , , , 1)
If TypeName(xRet) = "Boolean" Then Exit Sub
If xRet > 0 Then
xEnc = (xRet Mod 2 = 1)
For Each xCell In xRg
If xCell.Value <> "" Then
xCell.Value = Encryption(xPsd, xCell.Value, xEnc)
End If
Next
End If
End Sub3. Then press F5 key to execute the VBA, and a dialog pops out for selecting cells to encrypt. See screenshot:
4. Then click OK and enter password for the encrypted cells in another popped out dialog. See screenshot:
5. Click OK, and then in the third dialog, type 1 to encrypt selected cells, if you want to decrypt cells, enter 2. See screenshot:
6. Click OK, and the selected cells are encrypted. See screenshot:
Encrypt or decrypt select cells with Kutools for Excel
With above method to encrypt or decrypt cells is a little complex, but if you have Kutools for Excel installed, you can use Encrypt Cells and Decrypt Cells utilities to quickly get it done.
After free installing Kutools for Excel, please do as below:
1. Select the cells you want to encrypt, and click Kutools Plus > Encrypt Cells. See screenshot:
2. Then enter and confirm the password in the Encrypt Cells dialog, and choose one encrypting type in the Mask section. See screenshot:
3. Click Ok or Apply, and now the selected cells are encrypted.
If you need to decrypt the cells, select them and click Kutools Plus > Decrypt, and enter the password to decrypt them. See screenshot:
Encrypt And Decrypt Cells
The articles you may be interested:
- How to quickly flip data upside down in Excel?
- How to generate a list of all possible 4 digits combinations in Excel?
- How to generate random number without duplicates in Excel?
- How to paste values to visible/filtered cells only in Excel?
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