I wanted to generate digital signature in my asp.net application based on some value like date of birth. what is the way to do that ? i am using vb.net
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here know how to do to sign a file with certificate chain and crl embedded?I don't have ideia how to do that.
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My task is to validate the digital signature against the x509 embedded key in the xml document. I see examples how to do this against a public key in the mdsn examples but not sure how to do the compare within the same xml block. I know I have to decode both from base 64 encryption, but how do I make the comparison? What is the most simple way to do this?
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Is there a way to programmatically add a digital signature to a VBA Macro in a word document using C# or VB.Net?[code]...
View 1 RepliesI am using logging application block for EL 5.0. I defined listener like below.
<add name="FlatFile TraceListener" type="Microsoft.Practices.EnterpriseLibrary.
Logging.TraceListeners.FlatFileTraceListener,
Microsoft.Practices.EnterpriseLibrary.Logging"
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I'm planning on using the Smart Device Framework 2.3 to use the signature control panel in a Windows Mobile 5 application using the compact framework 3.5.
The control has the option to save the signature as either a byte array of points, or as a bitmap. Now seeing as I want to store the signature in a sql compact database, I guess the byte array is going to be better. The trouble is, I'm not sure how to render that in a full WinForms application after I've transferred it back to the desktop.
I need to show the signature on a report, so it would need to be an image I could link/embed into the report.
Here is my issue/question. I am relatively new to VB.Net programming, and I have been assigned the task of creating an application that will go out to a Secure web site and download a file. My first issue is it best to do this using a Windows form, ASP.Net or what. My second and main question is how do I authenticated to the secure web site in .net code?
Upon connecting to the secure web site it asks me for a certificate, which at the moment I have to manually present, however we would like to automate this. Then after it authenticates I have to go a few more pages in before i get to the file that needs to be downloaded.Although this file changes daily it has the same key tag so I can hardcode that into the download application. I just need to figure out how to programically authenticate to the site with .Net
I have create a vb.net application with ms access. i am make it .exe.After that i am instal it my pc working but my friends pc not work. After i am cheking my friends system all. .net framework is intallaled 3.5 thats same as mine. Error ,indicate that application1 has encounterd a problome and needs to close. We are sorry for the inconvenience.More detail ( digital product id, identify your license and internet protocol(ip).My application only a smal invoice. How can set digital product id and my personal information in to my application.
View 1 Repliesi am creating a programme for my institute which helps in their administrative process. i am using visual studio(basic) 2010. which is connected with ms access database (abcdata.accdb) the database is having table called session with columns sessionID,sessioncode,sessionname.
* sessionID data = 1,2,3,4
* sessioncode data = 13,14,15,16
* sessionname data = 2013,2014,2015,2016
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other then this u can see i want this because i am trying to create a database which must save the students data year wise, so that whenever we need to know a detail any students then we can find with query.
I have asked questions about this before but my program has came to cross roads where I require more flexibility in my security procedures.At the moment I generate a specific key based on certain details about the system, and I hash this data to file, which ensures it will only run on this system.
However it has now got to the point where I have a need for providing keys which will carry settings for the program within the key. So that if a customer wants an update its the matter of sending an updated key, which will allow certain areas of the program to be unlocked/locked.Obviously I can no longer use the hash, as it can't be decrypted. I am looking to use key encryption system, which will allow to encrypt data within a license key. But obviously it brings the problem of where to store Crypt & decrypt key within the program.
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how to generate unique ID based on combobox selection?
View 5 Replieshow can i capture a signature from an Electronic Signature Pad and store it in database. is there any particular api or it can be captured just like capturing an image from a WebCam. Is it manufacturer specific?
View 2 RepliesI was trying to use a GetAsyncKeyState code but each time I run the program an error occers where
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'A call to PInvoke function 'WindowsApplication1!WindowsApplication1.Form1::GetAsyncKeyState' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature.' The full code is in timer with (1) time interval
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Since I sign my project .exe files with my code signing certificate, I want to check in my application MainForm_Load if the executable is signed and the signature is valid?If not signed or signature has been tampered it must exit the code.
View 2 RepliesI'm working in .net environment (all versions) and using vb.net. I want to generate RSA public and private keys based on a passphrase. RSA algorithm only limited by using a class provided by the .net ie System.Security.Cryptography.RSACryptoServiceProvider Class. I know how to generate random RSA public/private keys and perform encryption/decryption.But that .net class don't let us creating RSA public/private keys based on a passphrase.
View 4 RepliesI currently have a simple crystal reports application which generates a crystal report and in the built in viewer provided by VS2005. There is a drop down where you can select options to change the criteria of the report. I wish to convert this app to a windows executable which will take all those select options and generates pdfs based on the crystal report. the executable will be triggered by windows task scheduler...or maybe command line app?
Obviously this will be somewhat of a re-write. What would be the best way to start this as? a crystal report application or a windows application.
how to create a uninstall command for a Windows-based application in the Application Folder when creating a new setup project in visual studio 2008.
View 4 RepliesHow can I generate barcodes in my vb.net application?
View 2 Repliesi need to generate report for my application and i don't know how to go about it.
View 3 RepliesI am about to develop a software (VB .Net) that generates and reads barcodes. The backend db is sql server.
1. I have a major id and sub ids. For example I have major ID A, and subgroups A0, A1, An. Also I could have more detailed subgroups like A01, A02 and so on.
I need to generate and print these barcodes from my VB application.
2. The handheld scanner is used to read the generated barcodes and pull their data and show them on the screen.
Anyone know of a library/assembly that can be used to generate a PDF from within a .net application.I know there are free PDF 'printer' drivers that could be installed separately but is there anything that can do it directly from within the application? For example a DLL that I can deploy with my application.
View 2 RepliesI need to generate a lot of random 2 character strings for my application. it's a VB console application. basically what I have tried for random strings is this:
Private Function GenerateRandomString(ByVal intLenghtOfString As Integer) As String
'Create a new StrinBuilder that would hold the random string.
Dim randomString As New StringBuilder
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What is going on? I thought that I used to, a long time ago, be able to just do random.Next.
I'm looking for a basic way to generate keys and have the application verify that it is a correct key.
View 2 RepliesI have designed a class for posting data to server, which is a time consuming task so that i have used background worker in my application. instead of repeatedly using backgroundworker in my application, i decided to add it to my class and generate two events PostWorkerReportProgress, PostWorkerComplted for my application
View 1 RepliesIs there a way to auto generate unique number on the form when an application starts up and it should incremente in the dataadapter and database too. How can i set it up?
View 10 RepliesI am using the web browser control to generate screenshots of an intranet application developed in ASP.NET.
The screenshot is generated, compressed and then stored as a BLOB in the database. When I developed this facility I investigated the best way of compressing the image (to the lowest byte size), however the images still seem to be too big as the database table is growing larger than I hoped. I am using the TIFF format, but I am now thinking that this may not be the best as it is used by photographers (who I assume require good quality photographs). Here is the code to compress the image (before it is stored as a BLOB):
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is there anyway to convert my VB application to a web based applet
View 9 RepliesI'm developing a program working with database. Id like to use the Service base database but it gives me an error when I try to add it in my project Project > Add new Item > Service-based database
I wanted to use this database so I could make a table in it.
Error:
Connections to SQL Server Files (*.mdf) requires SQL Server Express 2005 to function properly. Pls verify of the component or download from the URL
go.microsoft.com/fwlink/?LinkId=49251
But when i go to that site its just the vs express websites.
Im using VS2008 Pro. I also installed other files like SQLEXPRADV_x64_ENU
Am I missing something that i need to install?
I already have "SQL Server Management Studio" listed in All Programs> Microsoft SQL Server 2008
Even the SQL Server Compact 3.5 is already installed
How will I know if I properly installed the required components or application?
I am making a window based application in vb.net.Now i have work in two sql databases, so i when the window opens it will show two databases..when i select first db then i can work in that particular db only..if select 2nd db then i can work in second db only..how to do that?
View 4 RepliesI done my opencv code using windows console application vs2008 than i make that as a dll and used it in windows application vb.net. while running i got this error.i didn't get where i did mistake.The error is like this
unhandled exception has occurred in your application if you click continue the application will close immediately.unable to load aranga.dll.The application failed to start because its side by side configuration incorrect.
aranga.dll is my dll having my coding opencv coding part.
