x509certificate2

We are using ClientCertificate authentication with HttpWebRequest. For the client certificate authentication we are creating the X509Certificate from Pfx file and attached to the outgoing HttpWebRequest. What we see is that after the request is created we are seeing to many temporary files in the folder : C:\ProgramData\Microsoft\Crypto\RSA\MachineKeys As we make more request we see that the number of temporary files created in C:\ProgramData\Microsoft\Crypto\RSA\MachineKeys folder is increasing continuously. We create the certificate from pfx file and then we set the key container. Expilicity

I have a .pfx certificate file on my computer. I want to to encrypt a message with its public key, and then decrypt it with the private. Also I want to sign another message with its private key, and then check the signature. And I need to get the information about the sertificate the message was signed with from that message. How can I do it using System.Security.Cryptography? You can open the PFX in .NET, like the following: var path = <YOUR PFX FILE PATH>; var password = <YOUR PASSWORD>; var collection = new X509Certificate2Collection(); collection.Import(path, password, X509KeyStorageFlags

I am trying to generate an X509Certificate2 object using the Microsoft AES Cryptographic Provider : CALG_AES_256 (0x00006610) 256 bit AES. This algorithm is supported by the Microsoft AES Cryptographic Provider. My problem is that my call to CryptGenKey(providerContext, 0x6610, 0x4000001, out cryptKey) fails with the following error: An unhandled exception of type 'System.Runtime.InteropServices.COMException' occurred in mscorlib.dll Additional information: Invalid flags specified. (Exception from HRESULT: 0x80090009) The flags I am using are (1024 << 16) | 1) . Unless I am mistaken, should

We create a X509Certificate2 object in our ASP.NET app to make periodic outgoing connections. Every time one of these certificates is created a new file is created in: C:\ProgramData\Microsoft\Crypto\RSA\MachineKeys That folder now has 4 million files that never get cleaned up. I've tried removing the Persist flag new X509Certificate2(certBytes, p12Pwd, X509KeyStorageFlags.MachineKeySet); //no X509KeyStorageFlags.PersistKeySet but that doesn't help -- still get the 2Kb file on every call. I got my hopes up when I saw this answer , but this is a 2008 R2 server, and the temp files are not 0

I have the following C# code, constructing an https call with a custom certificate. When using Tls 1.1, the call works fine. When using Tls 1.2 the call breaks. I using curl, using tls 1.2 works fine as well. C# Code: X509Certificate2Collection collection = new X509Certificate2Collection(); collection.Import("C:\\SomePath\\MyCertificate.pfx", "MyPassword", X509KeyStorageFlags.PersistKeySet); var cert = collection[0]; ServicePointManager.SecurityProtocol = ...; ServicePointManager.ServerCertificateValidationCallback += (sender, certificate, chain, errors) => true; HttpClientHandler handler =

I have already spent a few hours to resolve this error. The weird thing is when I use this libraries independently, it works absolutely fine but when I integrate them with my ASP .NET MVC website, it start throwing the following exception. I have also used MachineKeySet flag based on suggestion here but still no luck. Could anyone please help me to get rid of this exception. Thanks. An internal error occurred. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated