[AccessD] Hiding Back End Design

There are free umm access tools from Russia.
http://accesstools.narod.ru/index.html

One of these reads the passwords in an MDW file, which might get you 
into a secured mdb.

There are quite a few Case Tools that will reengineer an mdb complete 
with UML diagrams via ADO.
 You might have to turn off Table read permissions and use RWOP Query  
permissions.
Given that you might want to use MSDE for security. I don't know if you 
can brute force crack MSDE.
But SQL Server password authentication is not  very safe, as there is no 
lockout policy to protect against brute-force attacks.
So you should protect against simple dictionary attacks.


Private Sub GrabMDBPassword(strPathFilename as string)
' Access 97method -  neeeds mod for xp
    Dim b As Byte
    dim xorstring as string
    dim qs as string
     dim j as long
      dim i as long
       dim b as long
    xorstring = Chr(218) & Chr(236) & Chr(1) & Chr(156) & Chr(154) & 
Chr(40) & _
      Chr(79) & Chr(138) & Chr(8) & Chr(123)

    Open strPathFilename For Binary Access Read As #1
    qs = ""
    j = 67
    For i = 1 To 10
      Get #1, j, b: j = j + 2
      qs = qs & Chr(b Xor Asc(Mid(xorstring, i, 1)))
    Next
    Beep
    MsgBox "Password:" & qs
End Sub

Rocky Smolin - Beach Access Software wrote:

>I've heard tell that there are cheap Access password crackers available.  To
>someone in China who wanted in, would it be very difficult?
>
>Rocky
>
>----- Original Message ----- 
>From: "Steve Conklin (Developer at UltraDNT)" <Developer at ultradnt.com>
>To: "'Access Developers discussion and problem solving'"
><accessd at databaseadvisors.com>
>Sent: Monday, June 21, 2004 9:46 AM
>Subject: RE: [AccessD] Hiding Back End Design
>
>
>  
>
>>Well - I'm keying on the fact you asked for an easy way ...
>>
>>Are you using an MDE front end?  If you password protect the BE, and put
>>that password in your (compiled in an MDE) re-linking code, you can keep
>>out most miscreants.
>>
>>Hth
>>Steve
>>
>>
>>-----Original Message-----
>>From: accessd-bounces at databaseadvisors.com
>>[mailto:accessd-bounces at databaseadvisors.com] On Behalf Of Rocky Smolin
>>- Beach Access Software
>>Sent: Monday, June 21, 2004 12:16 PM
>>To: AccessD at databaseadvisors.com
>>Subject: [AccessD] Hiding Back End Design
>>
>>
>>Dear List:
>>
>>Is there a way to easily hide the back end design?  My distributor in
>>Taiwan feels that if the back end design is not hidden then the product
>>can be easily knocked off.
>>
>>MTIA
>>
>>Rocky Smolin
>>Beach Access Software
>>http://www.e-z-mrp.com
>>
>>-- 
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>>http://databaseadvisors.com/mailman/listinfo/accessd
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>>
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>>    
>>
>
>  
>

-- 
Marty Connelly
Victoria, B.C.
Canada