Error - SymmCrypto Is A Wrapper Of System.Security.Cryptography.SymmetricAlgorithm Classes
Jul 7, 2010
For my applications I use the following class:
Imports System.Security.Cryptography
Imports System.IO
Imports System.Text
'SymmCrypto is a wrapper of System.Security.Cryptography.SymmetricAlgorithm
[code]....
Most of the time this works as it should, but sometimes it encodes a string and the gives an error on decoding it. The error message is: Invalid length for a Base-64 char array.
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Aug 26, 2009
I realize AesCryptoServiceProvider is part of .NET framework 3.5. I do have 3.5 installed. However, (I can't believe I don't know this), how can I utilized Framework 3.5 so I can access the AesCryptoServiceProvider? Currently, it points to 2.0.
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Feb 16, 2010
I'm working on a basic file encryption by using the Imports System.Security.Cryptography.I was thinking of putting a password as a final security measure.Would i have to store the password inside the file or how will this work?
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Jan 4, 2012
System.Security.Cryptography.CryptographicException: Length of the data to decrypt is invalid.
My Code:
' Decrypt textfile with Rijndael encryption
Public
[code].....
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Oct 20, 2009
I am trying to mimic the results of some C code that uses the OpenSSL library using the system.security.crytography library in the .net 3.5 world, and I can't seem to get it right. part of the issue is my understanding of crytography in general.
Here's what is supposed to happen:
I send a request for authentication to a device.It returns a challenge digest, which I then need to sign with a known key and return The device returns a "success" or "Fail" message.I have the following code snippet that I am trying to "copy":
[Code]...
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Apr 10, 2012
i wanna generate an HTPASSWD file for my Server to secure a directory. For Crypt im using DesEncrypt Method , here is my Code :
[Code]...
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Apr 29, 2010
I have used System.Security.Cryptography classes to encrypt and decrypt connection settings but have a question regarding securing the private key needed to decrypt. Given that assemblies can be easily read, what is the preferred method for storing the private key so that it is not visible to anyone who goes looking?
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Jul 27, 2010
I am getting the following error message when I try to call this program from a shared drive on our network;
System.Security.SecurityException: System.Security.Permissions.SecurityPermission
at EMAILVB.EmialVB.EmailVB_Load(Object sender, EventArgs e)
[code]....
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Sep 4, 2009
we are making our program in other computer it runs, without errors, but then when we transfer the program to another computer it has an error that says
An error occurred creating the form. See Exception.InnerException for details.The error is: Request for the permission of type
'System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
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Nov 4, 2010
im making a md5 cryptology for a program, it work in everyform exept this one..
Imports System.Net.Mail
Imports System.Net.FtpWebRequest
Imports System.Net
[code]....
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May 9, 2012
So I have a some code I've been using for quite a while and it has worked fine. This project is rather large so I'm using a detailed namespace and I can't get it to work.[code]...
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Oct 20, 2010
A co-worker checked a very simple Visual Basic Visual Studio 2010 application into our version control system. When I checked it out and tried to build it I got the weird error below, which I am guessing has something to do with which .Net Framework the build is targetted towards and also which Framework I have installed.
------ Build started: Project: VB-DEER10, Configuration: Debug Any CPU ------
Build started 10/20/2010 3:35:57 PM.
C:WINDOWSMicrosoft.NETFrameworkv4.0.30319Microsoft.Common.targets(1558,9): warning MSB3283: Cannot find wrapper assembly for type library "Microsoft.StdFormat".
Build FAILED.
Time Elapsed 00:00:00.15
Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped
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Nov 9, 2009
i am getting the error "System.security.permissions.securitypermission" when running the VB application in another machine. i have put the .exe file in the common path and i ran it my machine and it is working fine, but when i tried to run it in the different machine i am getting the error. Can anyone help me out in fixing this error.
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Jul 13, 2010
the next issue, that is only shown when the server is a Windows server 2008 machine , this is the information that I've found
[Code]...
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Mar 31, 2009
I have made an simple application (.exe). When i run this program local on my machine it works fine. When i run it from an server i get the system.security.securityexception message.
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Jan 13, 2012
I am trying trite code that will copy information from an infopath document to a word document that is being used as a template containing only a header and footer. The only reason for the code is becausthe footer (not optional) is too long to be handled by Infopath (which has a 255 character limit) and word can hold the full footer. Following the guidance on
Public Sub CTRL1_5_Clicked(ByVal sender As Object, ByVal e As ClickedEventArgs)
Dim appWord As Word.Application
Dim wrdDoc As Word.Document
[code].....
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Jul 8, 2010
I'm working with a vb.net 2005 project that i converted from vb 6.0 last year. It's working fine in windows xp, but on vista and windows 7 i get an error saying 'Insufficient security permissions to set the system time.' Can you think of any way to replicate this error on windows xp? I'm trying to get a windows 7 box setup at work but I was wondering if there was anything I could try with xp in the meantime.
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Jun 10, 2011
Counting days independent of system calander ?
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Jun 10, 2011
I want to add a feature to my trial version of the application. After first activation, I want to make it limited to 90 days. But I am concerned about user's changing the date of system hence deceiving my application. Is there any possibility to make it fool proof in a way that even if user takes the calender back, application expires after 90 days of first activation? First activation date has been saved in the database.
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Jan 11, 2010
Trying to read key "HKLMSOFTWAREPoliciesMicrosoftWindowsWindowsU pdateAU" value "AUOptions" and get the following : A first chance exception of type 'System.Security.SecurityException' occurred in mscorlib.dll Error occurs in ReadRegistry key SOFTWAREPoliciesMicrosoftWindowsWindowsUpdate AU : Requested registry access is not allowed. This occurs in my vb.net application when application is run under an account called OPER in the USERS group. The application :
1/is on my PC's hard drive, its not a web app or on a network share
2/is launched via a desktop click
3/ has a manifest specifying executionlevel "AsInvoker"
It does not occur when the Application is run as an Administrator. It does not occur if I read the value with a non .NET program when logged in as OPER whch makes me think it is a .NET problem not a registry permissions problem. Examining "Effective Permissions" shows that my OPER login has query value permission.I need the application to be able to read the key like the non .NET application while running at USERS level.
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Apr 13, 2012
I'm working with vb.net in Visual Studio 2010, I have a method which writes entries in eventlog, this work fine in Windows XP but did not in Windows 7, here it throws a security exception.I allready know that this problem is because the user who exectues this assembly does not have permissions to write the registry, so my question is if does not exist some way to give permissions on the fly, something like declarative permissions or something
like that....this is my code:
Public Shared Sub Loguear(ByVal xsSource As String, ByVal xsMessage As String, ByVal xeEventType As EventLogEntryType, _
ByVal xsLogName As String)[code].....
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Sep 8, 2010
I wrote a custom assembly for SSRS that returns a jpeg for the background image in a textbox on the report.I followed all instructions on msdn in regards to security but i still receive the same error.
Below is my config information
<pre lang="x-xml"><PermissionSetclass="NamedPermissionSet"
version="1"
name="Barcode">
[code].....
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Jan 20, 2012
Since most of the projects I work on are exclusively SQL Server 2005/2008 database driver, I was wondering about the implications of using System.Data.SqlTypes classes as data types in my VB.Net Framework 4.0 code.For example currently I define integer variables as Dim X as Integer.Using System.Data.SqlType classes I would define my intege variables as.Dim X as System.Data.SqlTypes.SqlInt32 implications for performance, serialization and databinding. One difference would be that all variables would default to Null.
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Feb 29, 2012
I remember seeing somewhere on the net that there are classes in .Net that will return information about your computer. I know that System.Environment returns some of this information like MachineName and some other stuff. Are there other classes that will return information such as hard drive size, free and used space, total memory, used memory?
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Nov 17, 2009
I need to generate a class at runtime similar to System.Resources where you can add a resource eg 'picture.bmp' and it immediatelly is accessible as 'System.Resources.picture.bmp'. I presume I need to generate XLM or/and XLSD at design time and then deserialise at runtime but I cant find a reference on how to do this. Specially without knowing the generic class in advance (as 'System.Resources' doesnt know all the resources in advance).
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Jul 31, 2009
I am fresher in vb.net but I want to develop a project in this case I want to use the system.Configuration namespace's specific calsses. But I am not clear which class i use and why it's function and it's use.
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Mar 25, 2009
I have an VB.NET 2005 application installed on my Windows 2003 Server.I try to access that application for other computer on my network. Read below:I get this error when running a remote VB.NET application.
System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
I had the error on my computer running Windows XP. I am use to that, so I went in the FrameWork .NET 2.0 and set the security to FullTrust and the error disapeared. Now I have the same error on my computer that is running Windows Vista and when I go do the same security changes to FullTrust, it does not work. I still have the error showing.Is there some other configuration to do on a Vista machine to be able to run a remote VB.NET application ?
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Jun 18, 2009
I have created a very basic program in VB that will run a batch file that writes a reg file to the registry (see code below). In XP it works fine with no problems. However, with vista it comes up with a security error and does not run the batch file. The error it says is:
[Code].....
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Aug 28, 2009
I have been developing some components for our products at work, and one of them is based off the flow layout panel.What i would like to do is provide a custom designer for it, but without loosing the features provided by it's default designer (System.Windows.Forms.Design.FlowLayoutPanelDesigner) which is marked as internal.Using Reflector i thought i would just implement it again myself, seeing as it inherits from 'FlowPanelDesigner and that from PanelDesigner` all of which are internal.
Why would these classes be specifically marked as internal? Is it due to them being specifically for Visual Studio use, and thus not 'framework' code?Also, is there an easier option that re-implementing all the functionality?
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Feb 28, 2010
My software handles multiple operations on files, and I have now finished writing the related functions, using the System.IO classes. I now need to add support for network drives. Using a mapping works very well (although Directory.GetFiles is a bit low, and I don't know why), but I'd now like to be able to deal directly with paths such as \192.168.0.10Shared FolderMyDrive. Is there any way to handle this type of paths other than mounting the drive to an available drive letter, using the newly generated path, and then unmounting?
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