everyone,
I am developing a web application that uses X509Certificate2 to get a private key from a certification file. Code snippet looks like following:
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.
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