Click here to Skip to main content
15,878,016 members
Please Sign up or sign in to vote.
0.00/5 (No votes)
See more:
everyone,

I am developing a web application that uses X509Certificate2 to get a private key from a certification file. Code snippet looks like following:
C#
public static RSACryptoServiceProvider GetSignProviderFromPfx()
{
    var strFileName = "c:\cer\mycerfile.pfx";
    var strPassword = "000000";            
    X509Certificate2 pc = new X509Certificate2(strFileName, strPassword, X509KeyStorageFlags.MachineKeySet);
    var ThePivateKey = pc.PrivateKey;

    return (RSACryptoServiceProvider)ThePivateKey;
}

But the statement pc.Privatekey causes a System.Security.Cryptography.CryptographicException "Invalid provider type specified" . I'm sure the certification file has no problem, it really has a private key. And the property pc.HasPrivateKey is also return true.

The test environment is VS2013, window 7.

Anybody can help?

Thanks.

What I have tried:

I also tried following:

a. I debugged it in VS2013 with iis express, the problem occured.

b. I debugged it in another computer with same enviroment with mine, the problem occured too.

c. I published the application to a server with iis running on Windows Web Server 2008 R2, it worked fine.

d. I published the application to widows azure website, it also worked fine.

Therefore, I guess the code snippet has no problem. The key reason raising the exception is that there may be some problem about running environment. I checked and compared the reading/writing right on the certification file in different environment, all of them are same.
Posted
v2

1 solution

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)



CodeProject, 20 Bay Street, 11th Floor Toronto, Ontario, Canada M5J 2N8 +1 (416) 849-8900