I need to Encrypt my license info and put in the Sqlserver, while user login I need to decrypt the license info and need to check the license. Is there any strong Encryption is available in .net framework 4?
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I was wondering, i have smtp mail adress and password (for gmail*) and it is probably very easy to read it when opened with hex editor or decompiled so i want to encode/crypt that info in my program to make it almost (i know it isnt possible to make it fully unreadable) unreadable and/or make my program undecompilable
View 8 RepliesI am using VB.NET for coding and SQL Server 2005 for database.My application is ready for release. Just on thing missing before I can go live.I want to implement license concept in my application.My license file can be text or xml file. In which there should be some encrypted matter which will be used for validate the application.how I can implement this functionality in my application.
View 1 RepliesI recently purchased Visual Studio 2010 and am wondering if it is possible to use the VS2010 license as a substitute for VB6 license.
View 2 RepliesI made a simple TCP server (I've found the example on the web) in VB to receive data from about 40 TCP clients.The clients are not synchronized but sends data about every 18 minutes; the problem is sometimes several clients sends data at the same moment, so I can't receive data.I also made a second program that reads the data (server program writes data on a file, read from the second program) scheduled.
My question is this: I've seen on the web examples about Multithreaded Server Socket Program, so I suppose this could manage my 40 clients (but now the clients are syncronized and send data at the same time in client mode) or is better get data (I have a central client that asks data to all 40 devices in server mode)?
Second question: can I make a single program where I run both TCP client and TCP server at the same time?
In my vb.net windows app, which runs on windows server 2003, i will like to return all the users who are logged into the server. How to do that?
View 3 Replieshow to read the registry and get all SQL server instances and databases installed and assign them to an array so I can then into the info into a datagridview?
View 9 RepliesIs their a way to send the server client info(account) With out connecting to the server(Full back and forth communication).
View 4 RepliesUp to now, my programs are installed in individual computers, and I use the data collected using Win32 classes (such as bios, board, and processor) to lock my program to those computers to avoid piracy. However, I am currently preparing two programs that will be installed in servers and accessed by more client computers. My problem is that I once read some ways of doing the same thing with server (accessing the hardware info of the server), but I simply can't find it again in my archive. My idea is simply to lock the program to the hardware info of the server computer, so wherever the person runs the program, it will be first checked the server hardware info, if it matches, only then, it will run. My client server is Windows Server 2003, and I am programming with VB2k5.
View 1 RepliesI am working on a media player, and I would like to setup a local playlist feature. I am using a single ListBox and its "Display-" and "Value-Member" properties. The display is the song's Artist and Name, and the value is the song's file path (i.e 'C:UsersUSERMusicetc.').To write the file path to the .txt file, I believe I can use the following code:[code]
View 18 RepliesI am new to .net classes and i would like to know how can i encrypt a text with AES256 algorithm.
View 3 RepliesI have a DER file with sha1RSA as the Signature Algorithm. I have to encrypt some data using it.Can anyone tell me how do I load the DER file and use the RSA public key in it to encrypt my data in .NET?
View 1 Replieshow to create Quick info and/or parameter info for own code?
View 6 RepliesI am making a program, obviously, and I require some assistance. I found an explanation on how to read information from a Text file and have modified it for my needs. Here is my (modded) version:
Public Function GetInfo(ByVal playlistname As String) As String
On Error Resume Next
Dim PlaylistInfo As String
[code].....
I'm making a database app. I've finish the search, add new, and add function. What I'm trying to do is to expand the functionality of the add new item function.
View 2 RepliesI am trying to do is fill out a form with certain info, put the info into an array, and write it to a listbox using loops, arrays, and maybe a function if I need one. This is for VB2010 and here is what I have so far... I think there are ways to make it shorter but I cannot figure it out.... maybe just brain dead from all the coffee I have been drinking!
[code]...
I'm using the .NET version of BouncyCastle, and I have to save a private RSA key to file, obviously encrypted with a password for security reasons.What I'm trying right now is this:
Dim rand As New SecureRandom
Dim arr As Byte() = New Byte(7) {}
rand.NextBytes(arr)
[code].....
But BouncyCastle is thwrowing a NullReferenceException on the last instruction. Since the method is totally undocumented >:( I wonder if any of you know how to use it correctly...
I have a requirement where I have to pass some values into the next page via querystring.This querystring is coming from third party and they need to have it on the otherpage for some analysis. I just do a response.redirect and add the querystring that i recieve from them to the other page. My problem is that the .net environment is encoding/encrypting some of the special characters used by them which I dont want as it does not bring back the correct values in the new page.
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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.
View 13 RepliesI am actually really new to VB and C#. From numerous tutorials that i found online i was able to create a small program that will encrypt a file. However I am having a really hard time decrying it back.[code]All I am trying to do is to create a program that will decrypte these file with an upload button. Our system encrypts the files to prevent operators from changing the results, we need to trend the data. However it will take way to long to use the online tool provided with the software. A desktop tool will save us much more time. The files generated are 70mb and up.
View 15 RepliesIm trying to create an encrypted file using a secure string and the AES128bit managed class to encrypt some data to a file.I have read many variations on the forums on how to do this but everyone seems to do it slightly differently. Ive created the below function and just wanted to confirm that this is the correct way to go about it.
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how to encrypting strings with SHA1, but all of the code I have found does not work or it is to complex for my program. I have found a website that has a encrypting demo program. It worked well so I email the programmer and he gave me this code.
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I heared about an encrypting function that encrypt the texts with a password I don't know exactly how it
View 6 RepliesIm 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,
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what the relation between Serialization and encrypting files, i wanna know that and i wanna a lessons for serialization and i want to ask about this code in VB6 if we can convert it to VB.net 2008
Dim a As String * 10
Dim b As String * 10
Dim c As String * 10
[code]....
how I can encrypt .pdf files? I haven't been able to find something that will give me an idea of how to do it.
View 4 RepliesI managed encrypting an xml document by encrypting an element and then replacing the element with the encrypted data. A shown in the sample code below. Public Shared Sub Encrypt(ByVal textReader As TextReader, ByVal textWriter As TextWriter, ByVal certificateName As String)
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I want to redirect to some page with querystring,and the querystring value should be in encrypted format and i want to decrypt that in codebehind
example:
function redirect(s, e) { window.location.href = "Default2.aspx?Id=" + encrypt(5)+ "&No=" +encrypt( 5);}
and in codebehind:
Dim id As String = Request.QueryString("Id").ToString()
id = Decode(id)
Dim no As String = Request.QueryString("No").ToString()
no= Decode(no)
I finally managed to encrypt the user settings in my app.config with the following
[code].....
I am currently using a binary formatter to serialize/deserialize some data objects. Some of the properties in the classes are Strings. When the data is written you can open the file with a text editor and can see the raw String data. Is there any way to encrypt the Strings or the entire object before it is serialized? I have looked at this thread here [URL] but the code is in C# and the free converters I tried for some reason did not like the code. This is the code I am using currently.
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