I am wondering if it is possible to read in the encrypted value of a Windows users password so I can preload a textbox with the value? I have a checkbox on my .NET form -> Use Workstation Logon. When the user checks this box, the username and password fields are populated respectively.
View 3 RepliesI'm working on a way to authenticate users in my app, and what I've come up with is the following method.To write to a database, the user must have an account in SQL server 2008. However, I still want people to be able to view the application if they don't have access, but only read, they can't sync any changes. This is working well, as I have a string array hard coded containing approved users:
Dim Users() As String = {"BWANG", "EDASALLA", "ERICHARDSON", "HALONZO", "JCHAPMAN", "SKIM", "PMACK"}
The one problem with hardcoding is that if I need to ever add a user later on, I'd have to release an update to the program. (which isn't hard as I already have updating built into the app, and users can still download updates even if they can't sync.)
What I'd like to do, is use an encrypted .dat file that contains the user names, and store that with the application, so that i could always be added to, and only one file would need to be downloaded.
I have code in place to encrpt and decrypt the .dat file (called users.dat) and this code works for single text entries in the file. I need to figure out how to load a list however into the array in place.
Imports System
Imports System.IO
Dim userfile as String = "C:users.dat"
Dim Users() As String = Data.Decrypt(File.ReadAllLines(path))
Basically each line in the file will have an encrypted user name, and i want it to decrypt each line and store it back into that authorized user list.
In login control ,is user can login with their encrypted password?
View 4 RepliesI need to be able to accept a password from a user in a WPF app, encrypt it then store this in a database and be able to decrypt later on. However I'm not sure how to implement this.
This is completely trivial so whether it's safe or not doesn't matter. All I need is for it to get working only I'm unsure exactly how to do it. I've tried playing around with the DESCryptoServiceProvider() but haven't gotten anywhere.
To be clear, how exactly do I go about converting a simple password into something that's been encrypted and storing it in the database (and what fields would I store it in). At this point, I'm happy if there's only one key and that key is being defined in the source code.
I am currently adding my friend's SQL Server into my Application everything works fine, apart from his password table encrypts so the login form only works when you enter the encypted password in. Is they anyway i can make the password field to de-crypt a password code.
[Code]...
I create a database like this:
Sub Main()
Dim wrkDefault As Workspace
Dim dbE As DBEngine
[code].....
I have developed a task Using VB.net (windows Application). I want to create a Login window for the Current user only allowed to use my application.So In my Login window UserNAme textbox I have showed the curent Login UserNAme like,
txtUserName.Text=Environment.UserDomainName & "" & Environment.UserName
And I have set txtUserName.Readonly =True.
Now the User to type the Password in my application password textbox.
[code]......
I m creating a Log In form at VB.NET and i have some problems The connection between the application and the web server opens fine and i can login if i use the MD5 encrypted text of the database.
View 15 Repliesi am having a mysql database that is having a password. so i am using it to login to the program. Is there a way to save the password (md5 encrypted i can do this) on a flash drive so i can access it from the program but the user can't access it.
View 17 RepliesI am using streamreader to read a file that is encrypted using PGP netshare. The file opens fine on my PC and i can read the file using Streamreader when it is unencrypted, but when i add it to an encrypted folder, I get back gibberish when the file is read. Below is a snipit of code, but i feel as though this may not be the problem.
[Code]...
Working in VB in VS 2008 I'm trying to read from an Excel file using Oledb. I have no problem with it when the file is not encrypted, but the client has set a password on the working copy.
I read elsewhere that it's not possible to read an encrypted Excel file this way, but I find that hard to believe.
I have an asp.net web app that uses forms-based authentication, a SqlMembershipProvider (using an encrypted password format), and a SqlRoleProvider. I need to know if it's possible to administer the users (create new users, assign them to roles, etc.) from a windows application - the powers that be don't want any administrative functionality in the web app itself.Here is the membership provider definition from web.config:
<membership defaultProvider="MyProvider">
<providers>
<add name="MyProvider"
[code].....
we are testing our visual basic application so it can be run under Windows Server 2008 R2.
We are experiencing problems caused by UAC when writing logfiles and configurationfiles.
Normally the admin configures the application so that it can be run by normal users without having to make
the whole configuration again. We do the config by writing some data into files that would have been placed
into the folder of the program. Now with UAC those files are placed in the users folder and therefor config files
are not unique anymore, also the logfiles.
I've been digging into this now for some time but have not found out, on how these configurations and logs
should be done right in Windows 2008 so that its for EVERY user, without turning UAC off.
I am writing an application that searches for a particular file in the C:Documents and Settingsuser accountsApplication Data folder. Now i am trying to make this application generic. I can make this application search in a particular users application data folder. But what i am tryin to do is take the user name from a certain file or place where windows xp stores it. Then make it search for that user. Is there a particular way to do it.
View 10 RepliesI am attempting to find some code to use in VB.NET to decrypt a string that has been encrypted using the Java crypto libary.All of the code I have found so far uses an Initialisation Vector and Key to decrypt but the string has been encrypted using the Key only. (Using an Initialisation Vector is apperently an optional step in Java).Does anyone know of code that I can use (preferably in VB.NET but i could convert C#) to decrypt AES 128 Bit encoded string without an Initialisation Vector?
View 1 RepliesI am looking forward to reset password of Windows Seven by my app.Using command
net user user_name *
But I don't know how to run this command
process.start("net user" & user_name & "*")
gives error.So how to do that or is there any other direct command which can change/reset windows password.
I'm working on an app that will only be used on Windows 7 and the user environment is very limited. Standard users cannot run exe files just by double clicking them. However, there is a bug that if you right click and click "Run as Administrator" on the exe, it runs without you needing to put the admin password in. So, what I'd like my app to do is sort of "emulate" this function on another exe. So the user clicks a button and it launches another exe by emulating the right click run as admin.Is this possible, without putting in the administrators username and password?
View 12 RepliesLong story short I have a situation where some users have access to two domains that do not trust each other. They log into one domain and their user ID's are identical on the other domain. So when they change their password on the first domain they need to call into tech support to have it reset on the second domain. I'm writing a app that checks if they have access to the first domain but not the second and if this is found to be true it prompts them for the new password to update the second domain.
Here is where I am stuck. The following code works GREAT but I need it to be more flexible:
Code:
Friend Function ResetPassword(ByVal OldPassword As String, ByVal NewPassword As String, ByVal UserName As String) As String
' Resets a users domain password
[Code]....
The issue is the CN is different between domains (one is first name last, other is last name first) so I need to search by UserID which is the same between the two. So I tried searching by sAMAccountName but it says object not found. Also I need to be able to search the entire Super Corp OU. When I get rid of the extra OU's the search also fails
So I need to search LDAP for sAMAccountName anywhere in OU=Super Corp. How can I do this? Every combination I try seems to fail yet if I hard code it like the above example it works great. The idea is to replace CN=John Q. Public with sAMAccountName=" & username & " to pull jsut that user on the fly.
If it matters all clients are XP SP2 or higher, both domains are Server 2003 or higher. VB 2008 SP1. The error message when a different search is done is a "Object not found".
PROJECT TYPE: Windows Forms Application
LANGUAGE: Visual Basic
.NET VERSION: 3.5
IDE: Visual Studio 2008
OPTION STRICT: on
OPTION EXPLICIT: ON
I need to populated a ComboBox and a CheckedListBox with a list of the Windows Accounts on the host computer. I also need to the user to be able to apply settings to the users individually. Thirdly, I need to find a way to add a startup registry key in the CURRENT_USER for a different user than the "Current User" (For example: User1 is an Administrator. User2 is a Limited Account [can't modify registry]. User1 needs to add Registry key to User2's "CURRENT_USER". This is a parental control application so the Admin accounts need to be able to access the registry from all users without affecting all users at once. I do not have any code to paste because I still have not the foggiest idea of where to start. I think it probably has something to do with an array (I have no experience with arrays whatsoever) but I am stumped from there. I'm a new, self-taught programmer so I speak idiot at times,
Summary of Questions
1) How do I retrieve a list of Windows Users?
2) How do I populate the objects above with such a list?
3) How do I interact with the items on that list (specific user accounts)?
4) How do I modify another user's CURRENT_USER Registry key?
I was wondering how i can validate in my app if the user has entered a valid windowsusername and password i.e.:
View 3 RepliesWhen I originally set up my project I 'hard-coded' my username and password in so that I could access a remote DB2 database. Now that I need to publish it to other users they need to be prompted for their own usernames and passwords. I've gone to "My Project/Settings" and deleted the items from the string - but when I run I get the following message on the statement:
Me.BATCHTableAdapter.Fill(Me.DB1DataSet.BATCH)
ERROR [08001] [IBM] SQL30082N Security processing failed with reason "3" ("PASSWORD MISSING"). SQLSTATE=08001
The settings are as follows (before I delete the userid and password):
Name:DB1ConnectionString
Type:(Connection string)
Scope:Application
Value:Database=DB1;Server=99.999.999.99:446;userid=myuser;password=mypassword;Persist Security Info=True;
The question is what do I have to do to make it forget my userid and password - and always prompt the user for both when running up?
I am using the Mysql .NET connect and can connect to my database using my program. i want to be able to get a Users Password from the database using there user name
This is the query i want to use: "SELECT Password FROM staff WHERE Username = " & textbox1.text & " '". But i don't know how to run that query and to get it to store the Password as a variable
I'm a newbie in visual basic. I'm doing a login system. I'm done with the GUI. but for the programming part, I want to know where to store new user's information along with the username and password. I've done research. seems like it has something to do with database. p/s: I'm looking for high security in storing data to prevent hacking.
View 1 Repliesim writing a little app to enable authorised staff to reset student passwords but having a few issues. . I am no expert and am now stuck The following code does not seem to error but also does not reset the password! Private Sub bt_pwd_reset_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles bt_pwd_reset.Click
[Code]...
I've got a code using SQLClient that loops though all users in a Users table inside each loop i want to preform another search in the UserOrders table, thus doing a count of all orders.
I get this error
HTML
There is already an open DataReader associated with this Command which must be closed first.
Here is my code
vb.net UserLists.Items.Clear()
Dim connection As New SqlClient.SqlConnection(My.Settings.ConnectString)
Dim command As New SqlClient.SqlCommand("SELECT * FROM Users ORDER BY PersonName",
[CODE]...
I'm developing a program which would be the only program user will use. What i mean by this is once the windows is up, my program will run and blocks users from accessing any other program installed or comes with Windows such as internet explorer, email client, games, etc.. unless user puts password for getting out of my program.
BTW, the OS will be Windows XP.What i want to accomplish by having this is like below:
1. No one would be able to use internet (= no virus)
2. No one would be able to change system time (= no record corruption)
3. No one would be able to install any program (= less system maintenance)
My program is Kind of interactive Kiosk program only certain user can access windows and other programs.Also when it comes to system maintenance, I will remotely access the computer using pcAnywhere or teamviewer like remote access tool.So after exiting the program, i should be able to use entire system w/o any restriction.
I'm wondering with My.Settings, where abouts my program saves them, and if they are very secure or not, encrypted etc..?
View 2 RepliesHow to read users in sql server in vb .net. i want to synchronise users from sql with users from my application.
View 2 RepliesConnection strings can stored in encrypted form in configuration file.
But some one can easily use the "UnprotectSection" method to decrypt the connection strings
I don't know how does this thing make it secure.
The error is raised after a normal user changed his password on - Windows Server 2008 Standard server joined to a workgroup
View 4 Replies