Question

Password

Asked by: Edward98

Hello all,

I can create a form that accepts usernames and passwords, but the passwords are hardcoded and cannot be changed or added at runtime. Any ideas on creating a secure password file that can be updated by an administrator at run time?  

Thanks in advance.

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Asked On
1999-06-09 at 02:51:01ID10169690
Topic

Visual Basic Programming

Participating Experts
5
Points
70
Comments
12

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Answers

 

by: SLEPosted on 1999-06-09 at 04:23:20ID: 1515970

Here's as simple Scramble function - write each record scrambled into the file. Note: sPassword is the actual (numerical) password, nKey is the user's ID number.

Public Function Scramble(sPassword As String, nKey As Integer) As String
    Dim sKey As String

    sKey = Format(314159 + nKey * 4, "000000")
    Scramble = Format(sPassword Xor sKey, "000000")
End Function

 

by: Edward98Posted on 1999-06-10 at 03:02:09ID: 1515971

Hi SLE can you give me more detail on how to use your sample
like where do i use this function? and where is the password stored?
TIA

 

by: SLEPosted on 1999-06-10 at 03:06:15ID: 1515972

Write the usernames and passwords scrambled into the file, line per line - when you read the file you'll have to use the function again to descramble:

e.g.:

123456|123456
234567|234567
...

 

by: Edward98Posted on 1999-06-10 at 03:15:40ID: 1515973

Hi SLE, I'm having problems with creating and updating the passwords at run time can you help me with that?

 

by: tfabianPosted on 1999-06-14 at 03:06:16ID: 1515974

Use PASSKEY software from Sonnet Software.. they've got demonstration code on the web at their web site. their modules fit into most VB routines quite easily.

 

by: Edward98Posted on 1999-06-14 at 14:04:42ID: 1515975

I looked at this site but didn't find it http://www.sonnetusa.com/
is this the right site? or can you send me the url?

TIA

 

by: mnazharPosted on 1999-06-17 at 11:18:19ID: 1515976

There are two methods, one is to store the password is in any Database file second is to store the password in encrypted INI file.
Try saving password in encrypted INI files.If you dont have the code for both mail me at mnazhar@super.net.pk

 

by: Edward98Posted on 1999-06-25 at 03:47:35ID: 1515977

Adjusted points to 75

 

by: setiawanPosted on 1999-06-28 at 00:30:50ID: 1515978

Try to make password verification on different machine
so You can use Client/Server Application, Client send the password to the server, and the password will be allow to change anytime, including at the runtime

 

by: LeeGarPosted on 1999-06-30 at 15:45:14ID: 1515979

Just save all the passwords in a access database file that is password protected and encypted. Then have your program call the database file either with the password or a PopUp to ask for the password.

 

by: Edward98Posted on 1999-07-01 at 13:54:31ID: 1515980

i know that's the way i should do this, but can you help on how to check the passwords from the database and create new ones at run time?

 

by: LeeGarPosted on 1999-07-01 at 15:43:08ID: 1515981

You could add a dbgrid to your form and have it call the contents of the database, but this control still doesn't allow for masking of char for the passwords you enter. The other way would be to just put textboxes in a row to create at table like form. Then just call the database up & import the fields into your textboxes. The boxes that will contain the passwords will use the password * feature to prevent being exposed.

This  would be for a database containing 3 fields,  user_name, password, confirm.
 The form would contain 3 columns and 13 rows of textBoxes

 Dim index as integer
 With Me
 
'Get RecordData from Database file
 MySet.MoveFirst

 Do Until MySet.EOF Or Index = 13
        .Text1(Index).Text = MySet!User_Name.Value
       .Text2(Index).Text = MySet!Password.Value
       .Text3(Index).Text = MySet!Confirm.Value
       
        Index = Index + 1
        MySet.MoveNext
Loop
End With
leegar@geocities.com






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