June 2008 - Posts
Hi all, When using RSACryptoServiceProvider in i.e. ASP.NET you may get the following exception under a heavy load scenario: "System.Security.Cryptography.CryptographicException: CryptoAPI cryptographic service provider (CSP) for this implementation could
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Hi all, Let's talk a bit about concurrency in CryptoAPI . When calling CryptoAPI from different threads , we have to take into consideration that key handles are not thread safe . The following document describes the threading issues when dealing with
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Hi all, You may be trying to install a hotfix or update silently , but you keep getting a security warning dialog because the file was downloaded from the Internet . The following article explains this situation: 889815 The Open File - Security Warning
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Hi all, Today I'm posting a sample which shows how to sign a text with a certificate in my Personal store (this cert will have public and private key associated to it) and how to verify that signature with a .cer file (for i.e. WinForms) applications
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Hi all, You may get an Access Denied error ( COMException 0x80070005 ) when using System.DirectoryServices.DirectorySynchronization in your .NET application with a non-admin user , but everything works fine with a domain administrator. This issue will
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Hi all, If you ever use WMI Diag script ( The WMI Diagnosis Utility -- Version 2.0 ) on a non-English version of Windows (i.e. Spanish , French, Italian, German...), you will get tons of errors when the script checks out default permissions on WMI namespaces
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Hi all, Some customers asked me in the past if there was any API to verify if a password meets Windows complexity requirements . Unfortunately there is no such API. We could implement our own if we know the requirements of the password filter used in
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