VS 2008 - Encrypt String Using ECDSA Algorithm?
May 28, 2009Any example code to encrypt a string using the new ECDSA algorithm?
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Algorithm String - Function Encrypt And Function Decrypt ?
Jun 13, 2011I have 1 string : abc @#ABC.xyz123ZYX
Now I need to encode the string:
The encoding alphabetic characters,
CODE:
With this string, after encoding, the result is: zyx @#ZYX.cba123ABC
About Function Encrypt and Function Decrypt?
Encrypt Vbs File Using Some Algorithm?
Oct 17, 2011I need to encrypt vbs file using a cryptographic algorithm. I read about converting it into vbe file, but is there any other way to do it?
View 1 RepliesVB 2008 App - Encrypt Database Connection String In App.Config
Sep 21, 2011I know this topic has been addressed a million times but please help me out. I have read so many articles on HOW TO encrypt and decrypt the app.config file but I need to know WHEN and WHERE I should encrypt it.
The problem arose because we found an AppName.exe.config file on a users computer and the database username and password was clearly visible. I understand that the .config file gets created during the VB app install process and is used
by the application. I then learned about the aspnet_regiis.exe tool and ran it on the app.config file inside my VB project. I am guessing that was the wrong thing to do.
When I now install the app on user desktops, it gives an error stating failed to decrypt the connection string. Also, when one of my other developers attempts to open the project in his copy of visual studio on his computer, he receives an error when trying to access the setting portion of the project properties. We store all of our projects on a file server and any developer can access the projects via a mapped drive on their computer.
So how am I supposed to encrypt the .config file. If I can't encrypt the App.config file in the development environment, then I'm guessing I have to perform the encryption on the users PC during the install process? How do I do that? Or is that what I am supposed to do?
Just for reference, here is the aspnet_regiis command I ran.
aspnet_regiis.exe -pef "connectionStrings" S:ProjectsDevelopmentVB.netPTPUSourceCodePTPU -prov "DataProtectionConfigurationProvider"
One last thing, maybe it's my misunderstanding of the issue but if this problem has existed since .Net 2.0, why has an option not been built into the development studio to encrypt connection strings?. This would seem to be a very common issue, even their own dataset wizard creates connection strings that are clearly readable.
Moving ECDSA From COM DLL To .NET?
Apr 2, 2009I have an ActiveX DLL that uses ECDSACom from Dragongate Technologies to create a signature for a product license. The product, when starting, uses the signature generated, the public key and the license to check if the license is good.But now I'm changing to .NET and 64bit applications and the ECDSACom can't be used since is a COM DLL. Is there any library so I can check the signature (given the signature, data that was
View 3 RepliesVS 2005 Greedy String Tilting Algorithm?
Apr 16, 2009I'm currently working on a greedy string tiling algorithm to find out matches between two strings, but there is something wrong with the string,Here is the code am trying:[code].....
View 5 Replies.net - How To Encrypt A String
May 27, 2012Parameters.ReferencedAssemblies.Add("System.dll")
Parameters.ReferencedAssemblies.Add("System.Data.dll")
Parameters.ReferencedAssemblies.Add("System.Windows.Forms.dll")
is a way to encrypt "systems.dll" in the add() value?
something like Add(Char64+char45+...) or any method???
Dim Version = New Dictionary(Of String, String)
Version.Add("CompilerVersion", "v2.0")
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How To Encrypt Any Given String
Feb 8, 2011I made this program to encrypt any given string, I am getting an error that prevents this from being finished.
Public Class Form1
Dim Holder As string
Dim Pass = "Za029fjao"
Dim Helper As String
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Holder = TextBox1.Text
Helper = Holder + Holder * Pass
Textbox2.text = Helper
End Sub
End Class
All I want to do is multiply 2 strings (is that possible?). The error says that string cannot be converted into double...
AES Encrypt Decrypt String?
Jan 2, 2010i need a standard way of encrypting a string and decrypting it using AES. I am aware of the Cryptography class, however almost every example creates a class to do the encryption,If .Net already has this implemented and ready to use why would we create classes for encryption and decryption, isn't it as simple as calling the encrypt method of the class or decrpyt and passing in the text. Unless everyone is wanting to centralize the code. But even then i see so many different examples from File,Data Protection etc..
View 10 RepliesEncrypt A String Via 128+-bit Encryption?
Apr 23, 2011I am not sure if there is such thing in VB.NET via 128-bit Encryption or more. [code]...
View 12 RepliesEncrypt Pdf File String?
Feb 4, 2011I have a page that has a few text boxes on it and are filled based upon a persons information. Like Name, telephone number, address etc
The data is stored in an Access DB.
I want to add a check box and have a label beside it that if it's checked it shows a hyperlink to a pdf file, if its not checked the link disappears, so toggle between the two.
Here's the check box I have so far, which isn't much:
<br><input type=checkbox name="Password" value="<%=oRs("Password")%>" size=40> Check to show PDF File: <a href="<%=oRs("Password")%>"><%=oRs("Password")%></a><br><br>
I need this hyperlink/ string to be encrypted based upon the persons name, so each person has its own pdf file and no one can just guess anothers pdf file and have access to it....
The pdf file will be stored in a virtual directory within the site.
I don't know Vb or asp, and I'm doing this all in notepad ++
Encrypt String In Program?
Dec 12, 2009Is 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 RepliesHow To Encrypt / Decrypt A String
Nov 2, 2011how to encrypt / decrypt a string in VB.Net.I followed the example given here and wrote the following code (below). There's a text box, an "encrypt" button, and a "decrypt" button. The idea is to type something into the text box ("like 'hello world'"), click "encrypt", and see the encrypted version appear in the text box. Clicking "decrypt" should then take you back to the original string.
But when I try to encrypt I get an error when I try to "FlushFinalBlock". The error is: "Length of the data to encrypt is invalid".The "decrypt" part is a total shot in the dark, as the example quoted above only deals with encryption, not decryption. I'm sure it's wrong, but since I can't get "encrypt" to work I haven't tested it yet.
Imports System.Data.SqlClient
Imports System.IO
Imports System.Security.Cryptography
Public Class Form1
[code]....
How To Encrypt Query String
Nov 20, 2010How to encrypt query string in vb.net ?
View 2 RepliesCode For Encrypt / Decrypt String
Nov 12, 2009i have found a few encrypt/decrypt tutorials online but either they dont work or they only work when the application is running so if i encrypt a string using some code i find and save it (in its encrypted form) and then restart the application and enter the saved encrypted string into a textbox and run the decrypt code it wont decrypt it. i don't understand why en/de-cryption is so hard or why there are so little working examples online. could someone be so kind and show me some code that can let me en/de-crypt a string even if i restart the application or use it on a different computer? and doesn't show the weak key errors all the time.
View 3 RepliesEncrypt (using Rijndael) A String To A File?
Dec 16, 2009I've attempted using code snippets as a test to encrypt a string, save it to a file & the reload it back, decrypting it. I consistently get a "Padding is invalid and cannot be removed." error on decrypting the string.
View 3 RepliesEncrypt A String Using AES 256-bit Encryption With A Custom Key
Jul 28, 2009I need some help with encrypting a string. I want to encrypt a string using AES 256-bit encryption with a custom key. How can I go about doing this?
View 3 RepliesHash - Encrypt A String Using HmacSHA256 In .NET?
May 8, 2009I need to create a keyed hash for a string of XML to send to a 3rd party. This is the code I am using but it is producing a different hash then the example the 3rd party has sent me.
Public Shared Function HashString(ByVal StringToHash As String) As String
Dim myEncoder As New System.Text.UTF32Encoding
Dim Key() As Byte = myEncoder.GetBytes(My.Settings.PortalHASH)
Dim XML() As Byte = myEncoder.GetBytes(StringToHash)
[code]....
It needs to be base-64 encoded, which is why I have the last line.
How To Encrypt And Decrypt Password String
Jun 25, 2009I want to encrypt all users' password that stored in database, but also i need to able to decrypt them.How can i do that?Because i try using MD5 method and only get one way ticket
View 4 Replies[2005] Encrypt String In VB - Decrypt In PHP
Feb 23, 2009I need to be able to encrypt a string in VB.Net 2005 and then be able to decrypt it using PHP on a web server.
PHP offers a variety of options - the best seeming to be mcrypt() but I can't see (easily) a way of encrypting the string in VB.Net
Encrypt A String Using RijndaelManaged And Using PKCS5 Padding?
Oct 18, 2010I use the following code to initialize encryption...
[Code]...
So I don't think there is a method for PKCS5. Is there any way to add it, or do I need to write an encryption method myself? If so - how do I write that? Is there a reliable DLL that will support it?
Encrypt And Decrypt Connection String In XML File?
Mar 4, 2010I want to save my connection string in XML file.How to do that?How to encrypt and decrypt that file using VB.Net
View 2 RepliesVb 2005 : Encrypt The String Values Stored In The Code?
Jul 23, 2009encrypt the string values stored in the code.The problem is that when the code is compiled and the .exe file is generated, anybody can edit the .exe file with an text editor or another program and see the values.This is very important for me, because i have some password stored in string variables?
View 1 RepliesAsp.net - Which Encoding Or Encryption Algorithm Should I Use For Query String So That It Will Result In Shortest Posssible Length (minimum Characters)?
May 26, 2012I am not sending any sensitive or security information in the query string. I am currently using Base64Encoding along with MD5 Hash. I want to shorten my url as far as possible.
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VS 2005 Encrypt Connection String In ALL Copies Of App.Config File?
Jan 19, 2011I have a question about the App.Config file. My understanding is that the connection string is stored within this file. I have setup my application so that the App.Config file is not only written to c:users<username>appdatalocal but also to c:users<username>appdataoaming. I plan to encrypt the connection string, my question at this point is will it encrypt the connection string in ALL copies of the App.Config file? It looks like at this point that the App.Config file is stored in two places on the hard drive.
View 2 RepliesImplement An Algorithm Called "Diamond-Square Algorithm"?
Jun 8, 2009I am trying to implement an Algorithm called "Diamond-Square Algorithm" I am having trouble ending it so that it retiurns the required result. So far I have the folloiwng.
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VS 2008 Algorithm For Pairing?
Nov 7, 2010I am trying to pair numbers, like for a tournament. I need an idea for the algorithm to pair up the numbers, not the code, but the algorithm.
View 1 RepliesVS 2008 Gutmann Algorithm 35 Passes
Oct 17, 2009I'am making a file Shredding program do you know how can i use Gutmann Algorithm 35 Passes in my code to delete the file visual basic 2008.
View 1 RepliesVS 2008 - Hashing A File - Using The SHA256 Algorithm
May 6, 2009I know I can MD5 hash a file, but how do I go about using the SHA256 algorithm?
View 6 RepliesVS 2008 2D Array Selection Sort Algorithm
Mar 6, 2011I have a 2D array which holds 5 students and two test results. I have initialised my array as studentTestResults(4,1) However, I am looking for a sorting algorithm which will displays the students in order of combined results when the user clicks "sort results". I have had a hard look around the net, but finding a bubble sort for a 2D array is difficult, especially as my knowledge is minimal.
[Code]...