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 am encrypting a file with this code.
[Code]....
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.
Need to design a program that can encrypt and decrypt messages stored in simple text files using a private key stored in a separate file. Software should also be able to allow the users to enter simple messages that either displays the encrypted or decrypted message. The encryption method should use a simple substitution method. It should be set out in the following format:
Example (the "@" is the separator):
@
The character The Code End of line
A @ 4gh EOL
B @ 84!9 EOL
Has to use the 256 ASCII character codes. The separator will be used to separate the character and its corresponding code.Here are the pseudocodes I have come up with:
� Read any private key file
separator = readline(file);
while not EOF(file) do
tempStr = readline(file);
[code].....
i am trying to make a small program to encrypt files using AES, and then have the password from the AES encrypted using RSA for its use of public keys. i've got the AES part working fine and i found a good RSA tutorial here url....but after i encrypt the AES password (which is saved in a .txt file) using RSA, then i try to decrypt it again, it comes out as an empty .txt file!
View 4 RepliesI want to make a program to encrypt and decrypt messages using a word cipher or random lettering(no duplicate letters) etc.
I've got 2 input boxes:
input text and keyword box
Two Buttons:
encrypt and decrypt
This is about all I have coded so far
Code:
Private Sub Encrypt_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Encrypt.Click
Dim EncryptInput As String
[Code]....
I have a few guess how to do this (not 100%) but setting up some sort of array might be one (not sure if it's the easiest)
Edit: one thing for sure I want to be able to separate the characters in the keyword into the start of an array (if the array is the best option)
I don't necessarily need code, I just need some advisement on how to approach this with commands. I don't know too many commands (only remember some fortran)
I'd like to write a simple Windows form that will make it easy to record a voice message before uploading it to a remote web server and sending the URL to the recipient(s):
[URL]
Currently, the user has to use Sound Record to record the message, use an FTP client to upload it to a web server, and finally, use an e-mail client to send the URL. I'd like to combine those three features into one.
i want to make a simple program that can be used of add,delete,edit,save,, thats all, so that i will understand the basic of programing.so that in that program i will developed it and also connection of vb2005 to sql server 2005.. i am amateur here using this vb2005 and sql server 2005.
View 4 RepliesI'm trying to make a per-user shell for a Vista box to simplify use of a particular system for my users. I have no problem making a program that I want to use and I am familiar with the process of editin the registry to make my program the users shell but I've run into a snag.
Whenever a user with the custom shell logs on, there is a delay just after they enter their password where the system will sit at "Preparing Desktop" for about 30 seconds. I know for a fact that the user desktop is already made and this shouldn't be taking that long.
I've poked around on the web and see various places saying that winlogon is waiting for the shell to flag a "shell ready" flag of some sort but I am unfamiliar with any such flag.
Anyone know of such a fix for the long login time or anything about a shell ready flag?
how to make a simple folder locking program and sorry don't have any code for it.
View 2 RepliesI'm trying to make a simple program that detects if a game closes, and when it does, it shuts down the computer.
View 1 Repliesi was wondering how i can make a simple program that when for eg a user enters 4 it gives this figure **** and so i want that if the user enters 5 it gives ***** etc.
View 9 RepliesI just have a simple vb.net website that need to call a Sub that performs a very long task that works with syncing up some directories in the filesystem (details not important).
When I call the method, it eventually times out on the website waiting for the sub routine to complete. However, even though the website times out, the routine eventually completes it's task and all the directories end up as they should.
I want to just prevent the timeout so I'd like to just call the Sub asynchronously. I do not need (or even want) and callback/confirmation that it ran successfully.[code]...
I am trying to make a very simple program that connects to a MySQL database using VB.NET. My program only has one form and one label. I setup my MySQL database to have a table and one field (a VARCHAR)called "Tab1". I manually inserted the value "CLOSED" into the Tab1 field using PHPMyAdmin. I want my program to change the value of the field to OPEN/CLOSED and I also want the label text on my form to change too when it's clicked.
[Code]...
I was wanting to make a simple client-server program.I saw some code for it and it was easy to understand but it was with winsock.
The program is:
Client: Clicks button.
Server: Recieves Text written in clients textbox.
Is there a reasonably easy way to do this?Maybe Net.Sockets or something similar?
I am trying to make a simple program to convert ascii in its code format
Example: Chr(53) & Chr(53) & Chr(54) & Chr(100) & Chr(52)
to a readable format. I understand that this can be easily accomplished by writing in the ascii code into the code will do it but I am trying to create a more interactive method of doing it so I can copy and paste a long length of code into a textbox and have it update a label with the conversion.
For my VB assignment I need to encrypt message and decrypt it again I managed to do it all pretty easily but the problem is the enter key. How can I turn it into ASCI and back again example
user entered - Hello
My Name is kurt
encrypted Message - Hello13My Name is kurt
Decrypted Messafe - Hello
My Name is kurt
The Space is no problem I managed to encrypted well but the enterkey is coming wrong (btw 13 because its the asci value for enter key).
Im learning Visual Basic 2010 on my programming class and we reached the part of file handling. Here i tried to make a simple program that can create a text file with the content of what i type on the textbox, basically i create the file if it doesn't exist, and if it already exists i append the content to it. Once the file is saved i can read it using the "Open" button. Unfortunataly, whenever i try to create the file, the compiler gives me an error saying that it cannot modify a closed file, although i've followed up the execution instruction by instruction and i can't find the error.
Imports System.IO
Public Class Form1
Dim body As String
[code]....
My first project is a scraper program. I would like to see if anyone can send me code or a tutorial on how to do it. I would also like to learn how to make a message posting program for a social site.
View 1 RepliesTrying to make a simple browser with some simple addon's. What Ive done is setup a menu(forum) for the user to enter their email providers web address and it will save it in a xml file. When they click on the email link, it should load the email xml iformation and place that info in the tb_html.text and navigate. I keep getting a null exception and im not sure what going on here. Here is the code:
Browsers:
Private Sub btn_Email_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btn_Email.Click
'Load Action
Dim SavedEmailObj As Storage
[code].....
Im wanting to display a Login message after my user Logs in. The Database has a column called AName where the users display name is stored. I have:
[code]to let them login. At this point I want to grab the value in AName and display Welcome 'AName'
I'm looking to make a simple install wizard to install my program (I know Visual Studio 2010 already has an installer) but anyway, I would like to make it myself, kind of line reinvent the wheel?
View 3 RepliesI have been working on a file upload section within my ASP.NET site.With the below code, I am able to get a user to upload documents based based on the Regular Expressions set within the RegularExpressionValidator.I am happy that this works accordingly.What I would like to complete now is a message to indicate that the file has been uploaded successfully. I am unsure how to complete this, but would like to add it to a Label named "fileuploaded".Here is my code for the .aspx page:
<table width = "60%">
<tr>
<td>Modes of Operation:</td>[code]......
While a fairly simple form it has had its problems. The latest is an error message (see below) that I do not understand and hence cannot correct. I have looked at the other postings, but did not see one that would apply.
CODE:
for the any of the button in vb the c# code which is written is not working at all after running a form example: exit, message box even these also not working give me solution
View 1 Repliesjust curious if there was a way to make the text in a message box scroll across the message box
View 1 RepliesI'm developing a vb.net program which shells to a program located at C:RippersSmartRipper 2.41SmartRipper.exe. However, I'm getting "Do you want to allow the following program from an unknown publisher to make changes to this computer?" This application when run from my laptop doesn't get the UAC message. However, running the same application on my desktop I get the message. Both are running Windows 7 Pro 64 bit. This app needs to run without intervention so I can't have it stopping without a way to programmatically keep it going.
[Code]....
Is it possible to encrypt string in VB.NET, so user won't be able to see it, when he opens program with hex editor, or something like that.
View 4 RepliesI'm trying to make a updater for my program at first i tried putting a password on the files folder then users can download the new zip file when its updated but when they first time install it wont have the password on it so i then decided not to use a password and am wondering how would i encrypt a line of code in the program? its the line that contains the database info so obviously i don't want my users to see that.
View 9 RepliesMy database is going to contain personal data. (such as contact details, names, password, etc...) This is what I need:
1) I need to encrypt the database
2) However, i will also need to be able to use it in my vb.net program.
To expand on my second point, i will need to be able to display the data (non-encrypted, obviously), and i will need to be able to compare user inputted data to the database data (like, i will be using datasets, so, IF txtUsername.text = ds.tables(0) ...)
[Code]...
I am just wondering how to encrypt my program so people can't hack it. I have a program that has a spot where you can type in problems with the program and it will email it to me. But, when I release my program people hack my email and password that is used to send the problems.
View 7 Replies