With introduction of UAC, I often get two questions for Windows Vista and later. 1) How to launch an application in the Administrative context from an application which is running in standard user’s context? 2) How to launch application in...

If you have implemented your random number generator make sure that you register it using BCryptRegisterProvider function. Add the algorithm name to the list of symmetric cipher algorithm class using BCryptAddContextFunction. Example: ...

There are no ADSI/LDAP API’s that eventually could directly use the Smart Card Credentials. We could follow the steps below: 1. Get the user credentials by reading in the certificate from the Smart card. 2. Call LogonUser() to get the user’s...

If you have to screen capture using Windows Media Encoder please follow the steps below. Start Windows Media Encoder (WM Encoder). To download WM encoder please refers to the link http://www.microsoft.com/downloads/details.aspx?FamilyID=5691ba02...

You might get a high CPU usage while decrypting using RSA keys The root cause of this issue (high CPU usage while decrypting using RSA keys) is as stated in the MSDN link http://msdn.microsoft.com/en-us/magazine/cc163676.aspx . The name...

The basic high level steps to read a certificate from a Smart Card and add it to the system store are: 1. Establish a Smart Card context using SCardEstablishContext. 2. Display the select card dialog box. 3. Get the card type provider name. ...

Here are the steps for creating a self-signed certificate with the key container created at the machine key set. Step 1: Get the CSP handle by creating the key container at the machine key folder. if (!CryptAcquireContext(&hCryptProv...

You create a key container on a machine for a specific user on the user’s profile. You log off the user and login with the administrator account and forcibly change the user’s password. Next time if you log on to the machine with the...

You may get a runtime error with your 64 bit managed Windows Media Encoder application while the 32 bit application runs perfect. This happens basically when your application tries to encode or more specifically transcode certain files that usually...

While updating your Windows 2000 box with latest security fixes you may get a situation where you may be stuck with the security fix MS10-013 asking you to update the latest DirectX. Basically this happens when you are doing a system update with the...

An understanding of SignedCms.CheckSignature(True) based on the code stated below. ' Create a ContentInfo object from the inner content obtained ' independently from encodedMessage. Dim contentInfo As New ContentInfo(innerContent...

You may want to use a Crypto API for Advanced Encryption Standard that is FIPS 140-2 complaint. While doing this using managed code you can come across the AesCryptoServiceProvider class that is FIPS complaint. I want to highlight some points before...