static void decipher(string filename, XmlDocument xmlDoc, List <RSA> Keys)
{
// Create a new EncryptedXml object.
EncryptedXml exml = new EncryptedXml(xmlDoc);
// Add a key-name mapping.
// This method can only decrypt documents
// that present the specified key name.
int keyid = 0;
foreach (RSA Alg in Keys)
{
try
{
exml.ClearKeyNameMappings();
Trace.WriteLine("Trying to decrypt with keyid " + keyid++);
exml.AddKeyNameMapping("rsaKey", Alg);
// Decrypt the element.
exml.DecryptDocument();
return;
}
catch (Exception ex)
{
Trace.WriteLine("When decoding the document - trying next key: " + ex.Message);
}
}
Trace.WriteLine("The program tried to use " + keyid + " keys");
throw new PingCastleDataException(filename, "Unable to find a key in the configuration which can decrypt the document");
}