X509Certificate.Export Method

Question

I am trying to export a .pfx certificate:

string certPath = "D:\\cert.pfx";
cert = new X509Certificate2(certPath, "pass");

byte[] certData = cert.Export(X509ContentType.Pfx,"pass"); /// **error in this line** 

X509Certificate newCert = new X509Certificate(certData,"pass");

But it ends with this error:

The key is not valid for use in the specified state.

Can someone help me? Any solution as an export certificate from the store

Answer 1

I think that you could not export the private key, because the constructor that you used to create the certificate X509Certificate2(filePath, password)does not mark the received certificate as exportable. I suggest using one of the overloaded constructors, which allows you to specify the exported flag - X509KeyStorageFlags.Exportable, for example X509Certificate2(filePath, password, X509KeyStorageFlags.Exportable).

X509Certificate2 X509KeyStorageFlags MSDN.

X509Certificate2.HasPrivateKey, , , .

Answer 2

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EDIT:

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Answer 3

, , :

pfx

byte[] certData = certificado.Export(X509ContentType.Pfx, "pass");

try to save as another type of content, mine was "Cert"

byte[] certData = certificado.Export(X509ContentType.Cert, "pass");