winzip icon

Barcode Generator Using MD5

Submitted on: 2/15/2015 12:37:00 PM
By: Chris Dwinell (from psc cd)  
Level: Intermediate
User Rating: By 5 Users
Compatibility: VB 6.0
Views: 4409
     This is a small example of how to create an MD5 hash and turn it into a barcode which could be used also as a password verification system. Example: you could take the generated barcode, save it to a file, then when a user types in their password, the program would verify it by comparing the saved barcode to the one generated by the user logging in. I appologize ahead of time for not commenting the code. It was an idea that just popped into my head, so I threw together in a few minutes. On a side note, the MD5 class I included is not my work. It was one I found on the internet and had saved in my archive, so I don't know who or where I got it from.


Windows API/Global Declarations:

Can't Copy and Paste this?
Click here for a copy-and-paste friendly version of this code!
'Windows API/Global Declarations for :Barcode Generator Using MD5
Private Type RECT
LeftAs Long
TopAs Long
Right As Long
Bottom As Long
End Type
Private Declare Function CreateSolidBrush Lib "gdi32.dll" (ByVal crColor As Long) As Long
Private Declare Function DeleteObject Lib "gdi32.dll" (ByVal hObject As Long) As Long
Private Declare Function FillRect Lib "user32.dll" (ByVal hDC As Long, lpRect As RECT, ByVal hBrush As Long) As Long
Private Declare Function SetPixel Lib "gdi32.dll" Alias "SetPixelV" (ByVal hDC As Long, ByVal x As Long, ByVal y As Long, ByVal crColor As Long) As Long
winzip iconDownload code

Note: Due to the size or complexity of this submission, the author has submitted it as a .zip file to shorten your download time. Afterdownloading it, you will need a program like Winzip to decompress it.Virus note:All files are scanned once-a-day by Planet Source Code for viruses, but new viruses come out every day, so no prevention program can catch 100% of them. For your own safety, please:
  1. Re-scan downloaded files using your personal virus checker before using it.
  2. NEVER, EVER run compiled files (.exe's, .ocx's, .dll's etc.)--only run source code.
  3. Scan the source code with Minnow's Project Scanner

If you don't have a virus scanner, you can get one at many places on the net

Other 3 submission(s) by this author


Report Bad Submission
Use this form to tell us if this entry should be deleted (i.e contains no code, is a virus, etc.).
This submission should be removed because:

Your Vote

What do you think of this code (in the Intermediate category)?
(The code with your highest vote will win this month's coding contest!)
Excellent  Good  Average  Below Average  Poor (See voting log ...)

Other User Comments

 There are no comments on this submission.

Add Your Feedback
Your feedback will be posted below and an email sent to the author. Please remember that the author was kind enough to share this with you, so any criticisms must be stated politely, or they will be deleted. (For feedback not related to this particular code, please click here instead.)

To post feedback, first please login.