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 Free Visual Basic .NET source code download for XOR Secret Key Finder, Decrypt cipher text crack XOR key

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XOR Key Finder
 

XOR Key finder, If you forget the XOR Key, this rank based program can find the XOR Key. This utility program written in Visual Basic.
Click here to Download the source code.

Introduction

Find XOR Secret Key, If you forget the code and want to find it, copy some cipher text and click the start button it will show you the code. More details use read me file in source code folder after download.

This XOR Key Finder program source code written in Visual Basic .NET programming language, capable of find XOR Secret key. 

1. Encryption / Decryption

 

2. XOR Encryption

3. Transposition Encryption
4. Symmetric Encryption
5. Asymmetric Encryption
6. Certificate Authority

7. Decryption Logics

8. Sample Coding

 

Next : Secure File - Encrypt any file with password

Screen shot




Logics

This is a rank based algorithm, we XOR each and every character to the ASCII value from 1 to 255 and give a rank of each find. While giving rank we compare each XORed value with predefined string. If the value found in the string we give a value 1, if not found then we give 0. Lastly we sum of all value to get a rank. the compare string something look like "ABCDE....XYZ" it is a readable text. You can change the string as per requirement, if you want to find XOR key for a numeric field, then string may contains only digits range from 0-9.
 

Dim StrPT As String
StrPT = "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890.abcdefghijklmnopqrstuvwxyz "

We take a multidimensional array to hold our result, we take a 255 X 3 array, first pocket we put our decrypted text, second pocket we put XOR Code and last pocket we put the calculated rank.

        For i = 1 To 255
            Dim TempDE As String
            TempDE = XORCipher(StrET, i)
            '>>> compare to Readable Text
            r = 0
            For j = 1 To TempDE.Length
                If InStr(StrPT, Mid(TempDE, j, 1)) > 0 Then
                    r = r + 1
                End If
            Next
            '>>> decrypted text
            DecrArray(i - 1, 0) = TempDE
            '>>> XOR/ Secret Key
            DecrArray(i - 1, 1) = i
            '>>> rank
            DecrArray(i - 1, 2) = r
        Next

Lastly we need to arrange the array by highest rank, .NET Framework support sorting array but its support only single dimensional array, as it is a multidimensional array we need to write few line of code to sort the array by highest rank.

        '>>> sort the array by highest rank first
        For i = 0 To 255
            For j = 0 To 254
                Dim TempRank As String
                If Val(DecrArray(j, 2)) < Val(DecrArray(j + 1, 2)) Then

                    '>>> swap rank
                    TempRank = DecrArray(j, 2)
                    DecrArray(j, 2) = DecrArray(j + 1, 2)           
                    DecrArray(j + 1, 2) = TempRank

                    '>>> xor key
                    TempRank = DecrArray(j, 1)
                    DecrArray(j, 1) = DecrArray(j + 1, 1)
                    DecrArray(j + 1, 1) = TempRank

                    '>>> decrypt text
                    TempRank = DecrArray(j, 0)
                    DecrArray(j, 0) = DecrArray(j + 1, 0)
                    DecrArray(j + 1, 0) = TempRank
                End If
            Next
        Next


Download the source code and project files

 

It is free to download, source code are well commented, complete visual basic .net source code can be download from the download link. I did not claim any copyright for this XOR Key Finder program and source code. You can freely download this XOR Key Finder program and use all or part of this program as you want. This is tested and live project visual basic .net source code however, my advice to you that you should take a backup of your original text and data file before use this XOR Secret Key Finder.

 
  Language: Visual Basic .NET   Platform: Win 2000, Win XP
  Category: Security Programming   Cost: $0.0
  Copyright: NO   Source Code: YES
  Size: 95 KB   Download: 780 Times
  No of Files: 15


 


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