Let's say a create a new project consisting of form1, sized at 400x400.I add a datagridview box of say 350x350 in size.Now that looks fine when the program is run. Except if the user increases the size of the window - or even worse maximises the window on a high res screen. Now my lovely 350x350 datagridview box looks silly on the huge empty background.Is there a way to set the datagridview box to increase in size automatically as the window grows?
In the UI of my winForm I ask the user for a user name and password. I store this password as text in the Settings (the .settings file) of my project. The app is a visual Studio Add-in How can I encrypt and decrypt the password before and after I enter it into the Settings file? I don't really need anything fancy. It's just a little in-house app. But I'd like to know all my options
There are many algorithms for encryption in internet. But i found them more complex. I want simple and powerful algorithm for encryption and decrytion of text.
Im a Uni student and im having probs with encrypting an image and also the contents of a folder. I have successfully encrypted and decrypted a text file using the following code below.
If anyone could take a look and advise on how to alter my code to perform the task of selecting an image or folder and encrypting it and decrypting it via a secret key that you input within a textbox,
I downloaded AxCrypt and encrypted a pdf file. It creates an executable that self decrypts the file if the correct password is entered. This is what I need except that I have to email this self decrypting file - and we all know that exe files get blocked. Are there any self decrypting methods out there that do not use an executable file?
I am trying to setup so a user can subscribe to my forums. When he/she does so, it puts them in the nec. group on the forum. This is all easy. Note: I am the owner of the site and the mysql db. So this isnt to decrypt them on other sites.
In short, all of my software will require a login / password to use the programs.
Now, on the mysql, the db encrypts the passwords. How would I go about decrypting it? I read somewhere that its a one way encryption. If this is the case, how does the site know if the password is right or wrong if it cant decrypt it?
i'm making instead of having the game save as regular text i wanted to mix it up a little. So, i took a bunch of special characters and assigned letters - A-Z and numbers 0-9 - some special characters per character. Anyway, when i 'encrypt'(not really encrypt) the text it works fine. But when i go to change it back.. that's where nothing happens.[code]The code for when i change the regular text into special characters is the same thing except backwards.I would rather not post the project since it's part of an even bigger project.
I'm writing a program in Basic where users can select a File using OpenFileDialog, then using a Dialog with two textboxes as the way to set the password to encrypt a file. I'm having trouble getting the program to require the password to open the file.
I have a program and I want to make it so you need a specific key to use it. I want to store keys in a text file and also use encrypt strings from my program to a text file.
I'm using Visual Studio 2010 Ultimate and programming in Visual Basic
[Code] Here _data is a string containing the encrypted value. m_transformDec is the Decryptor created previously. Usually this works. Occasionally, I get a "bad data" error. I print out the value of _data, and it is always the same. The code is multi-threaded, which I suspect is the reason for both the problem, and it being hard to reproduce. The decryptor is created in the creation of the class, and the decryption is done in a Shared function, but I don't see anything there which is not thread-safe. Any ideas?
I've been messing around with cryptography lately and wanted to figure a way to encrypt an exe so it's not runnable then decrypt it back to it's original state. I found a tutorial online that teaches how to do this with a text file so I figured I'd just tinker with that and try converting it for use with executables. For some reason though after I decrypt the encrypted version it doesn't run and gives me the error:^I'm running 64 bit windows but I'm pretty sure this wouldn't work on an x86 system either.
Imports System Imports System.IO Imports System.Security
I have encrypted a user inputted value and successfully stored it in the Windows Registry. Now I am having problems Decrypting that RegistryKey when my Form starts up and making sure it is the same key that was originally stored. My decrypting code has been working but if I go inside the Registry and add an extra character on to that keys value, my program is still running.. It is not supposed to run if that RegistryKey is not the one that was originally user inputted..[code]And I also have tried A LOT of other examples, but I am not going too post them all. So is there anyway I can check if a RegistryKey exists and Decrypt it to make sure that it has not been changed on my programs startup?
Trying to decrypt a textfile is giving me an error: The input is not a valid Base 64-string as it contains a non-Base 64 character, more then two padding characters, or a non-white space character among the padding characters.Besides that I also get an exception while debugging: A first chance exception of type 'System.FormatException' occurred in Fenix.exe When I start the app it opens the file and tries to decrypt it. After decryption the string is send to a label, so I can read it. The codes I used:
vb.net ' encrypt the file Private Function Encrypt(ByVal strText As String, ByVal strEncrKey As String) As String Dim IV() As Byte = {&H12, &H34, &H56, &H78, &H90, &HAB, &HCD, &HEF} Try Dim bykey() As Byte = System.Text.Encoding.UTF8.GetBytes(strEncrKey) Dim InputByteArray() As Byte = System.Text.Encoding.UTF8.GetBytes(strText)
i want to make some simple program for encrypt / decrypting message using VB, my problem was when i want to decrypt the message, the result was incorrect,
Code: Dim decryptor As Integer = TextBoxhasilencrypt.Text Dim privatekey As Integer = Labelprivatekey.Text Dim modulus As Integer = LabelModulus.Text
[code]....
the logic error on the program was when the "power of" are odd
I'm trying to create a password change form for my company's vendors. There are a couple of scenarios I could encounter doing this:
1 - User enters invalid current password 2 - New passwords do not match 3 - User's account is locked 4 - User cannot authenticate because password is expired
It's case 4 that I'm struggling with, because their is no way for me to take the password the user entered and verify it against active directory without getting an error.
I am implementing a system where the user can Reset their password if they have forgotten it.Once it is reset I want to give them the option of changing the password so that it will be something more memorable to them.The password is hashed and if i enter in the correct old password and new password the password does change.If I enter in the wrong old password and new password the password doesnt change.Is there a way to match the old password with the old password field in code behind so I can throw up an error to the user to tell them what is wrong? [code]
How do you get a textbox being using for password entry to display the black circle that you often see in web forms, on the iphone etc etc?
I can change the PasswordChar property to an asterisk no problem and even copying and pasting symbols inserted into Word seemed to work - just couldn't find a symbol that looked like a bullet point!
Can this actually be achieved for a standalone exe, or is it something unique to web forms? Surely copying and pasting symbols from Word isn't actually the answer?
I'm currently working on a CRM project in vb.net. I want the program to start with a prompt that asks for a password and if the user enters the correct password then the main form loads.Im having some problems wrapping my mind around this...
I am looking to create a simple password box that will ask the user for a username and pass, if the user is validated against the usernames and passwords in an .ini file the login box will close and launch a program also stated in the .ini file. I would also like to be able to launch different programs for different users.
Error #1 Encrypt works but decrypt does not. This is b/c the file extensions in TextBox1.Text is .txt and it is looking for .enc Error #2 If I enter in the file.enc the file will be decrypted but it will have the file extensions .dec. How can I copy the extensions (.txt) and replace the .dec after it was decrypted.
Is there a way to inerlock letters in a password. EX: lets say my password is 1234567password, is their a way to interlock or inject random letters/numbers /symbols/etc into the password? Ok so our password is = 1234567password is their a way to make it like this = g1i2h3h4q5d6g7rp4a7s;?s`w6o+r/d5
I have a button on my Form called EditingButton that will have a DialogBox appear asking for a password. How can I have "*" show instead of the Password it-self when the user enters the password?[URL]...
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.
how to save data (for example some text that user type [as password etc]) and save that password on same location where is application. After saving I want to have also Load option so we can load saved data.
I am making a password box with an if statement. I also want another form that I can change the password and if I close the password box, it will save the current password.
i have made a program that needs a password to activate it but i would like it to look for a text file in the same directory called "password.text" as it will alow me to change the password.
I'm making a custom control suited for handling passwords. I have created a control that inherits from a text box and I have implemented a lot of things so far. But what i want to do now is create a system so that when a user types It will display his last character typed for a X amount of time.Is there a way to turn only selected characters into password characters and still be able to get the password text from the Text property ?
