by Joel Zimmerman (1 Submission)
Category: String Manipulation
Compatability: Visual Basic 5.0
Difficulty: Intermediate
Date Added: Wed 3rd February 2021
Rating: 
(4 Votes)
Have you ever had one of your Programs, VIOLATED? By little punk kids that HEXED it? Well this Tutorial Shows you how to Protect against this!
VBcoders
Public Function HexEncrypt(ByVal sString As String) As String
Dim sHex As String
Dim i As Long
Dim pos As Long
Dim Encrypt As Boolean
Dim sNew As String
Dim sTmp As String
Dim iDec As Long
pos = 1
For i = 1 To Len(sString) 'loop through the string however needed
If Mid(sString, 1, 1) <> Chr(163) Then 'check if the string is already encrypted
'Turn Char into hex
sHex = sHex & Hex$(Asc(Mid(sString, i, 1)))
'pad hex with zeros
If Len(sHex) = 1 Then sHex = "0" & sHex
Encrypt = True
Else 'turn hex into text
sTmp = Mid(sString, 2, Len(sString))
sHex = Mid(sTmp, pos, 2)
iDec = Val("&H" & sHex)
If iDec > 0 Then
sNew = sNew & Chr(iDec)
End If
pos = pos + 2
Encrypt = False
End If
Next
If Encrypt Then
HexEncrypt = Chr(163) & sHex
Else
HexEncrypt = sNew
End If
End Function
*************************** EXAMPLE: ***************************
Dim Creator as string
Creator = HexEncrypt("£42614444424C6F6F44")
which actually means Creator = BaDDBLooD.
When people hex edit, They'll see the Hex of £42614444424C6F6F44, This will fake most inexperience users. Considering most people who hex programs are complete dumbdumb's ( Bad word Filter ) who can't make there own programs. Sometimes Experience users hex programs, to make them work under updated circumstances. If you want to Protect against this, just change the encryption to something more complex.
Tutorial Created by Joel Zimmerman, or Wu~En][g(v)a~uW@useast on Battle.net
