C# Sign Xml avec X509Certificate2

Question

J'essaye de signer un fichier XML. Voici le code (de MSDN):

RSACryptoServiceProvider Key = new RSACryptoServiceProvider(); 
SignXmlFile(XmlStart, XmlEnd, Key); 

Comment puis-je envoyer comme clé un X509Certificate2? Réservoirs! Francesco

Answer 1

Ici, vous utilisez la clé (publique/privée) du certificat.

Option 1)

X509Certificate2 cert = RetrieveCertificate("abcd"); 
var key = cert.PrivateKey; 

private static X509Certificate2 RetrieveCertificateFromStore(string certificateName) 
{ 
    X509Store store = new X509Store(StoreName.My, StoreLocation.LocalMachine); 
    store.Open(OpenFlags.OpenExistingOnly); 
    var cert = store.Certificates.OfType<X509Certificate2>().AsEnumerable().FirstOrDefault(c => c.FriendlyName == certificateName); 
    return cert; 
} 

Ou Récupérer certificat de fichier:

private static X509Certificate2 RetrieveCertificateFromFile(string certPath) 
    { 
     // string certPath = @"C:\Certificates\myCert.pfx"; 
     string certPass = "mycertPass"; 
     // Create a collection object and populate it using the PFX file 
     X509Certificate2Collection collection = new X509Certificate2Collection(); 
     collection.Import(certPath, certPass, X509KeyStorageFlags.PersistKeySet); 
     // Instead of foreach you can directly retrieve the certificate from collection as well. 
     foreach (X509Certificate2 cert in collection) 
     { 
      // Import the certificates into X509Store objects 
      return cert; 
     } 
     return null; 
    } 

Option 2)

RSACryptoServiceProvider key = RetrieveKey(cert, EnumKeyType.Private);