/// <summary>
///
/// </summary>
/// <param name="path"></param>
/// <param name="overrideCurrentSignature"></param>
/// <from>http://msdn.microsoft.com/en-us/library/system.io.packaging.packagedigitalsignaturemanager.sign(v=vs.100).aspx</from>
public void Sign(string path, bool overrideCurrentSignature)
{
{
_log.Debug("We're going to try signing {0}, override current signature {1}".format(path,
overrideCurrentSignature));
var package = Package.Open(path);
_log.Debug("Opened {0}".format(path));
var signatureManager = new PackageDigitalSignatureManager(package)
{
CertificateOption = CertificateEmbeddingOption.InSignaturePart
};
if (signatureManager.IsSigned)
{
if (overrideCurrentSignature)
{
_log.Debug("{0} is signed we'll try to remove signatures".format(path));
//TODO: make smarter so we only remove signatures for the relevant parts
signatureManager.RemoveAllSignatures();
package.Flush();
}
else
{
_log.Debug("{0} is signed, we're going to throw".format(path));
throw new AlreadySignedException();
}
}
var toSign = package.GetParts().Select(packagePart => packagePart.Uri).ToList();
toSign.Add(PackUriHelper.GetRelationshipPartUri(signatureManager.SignatureOrigin));
toSign.Add(signatureManager.SignatureOrigin);
toSign.Add(PackUriHelper.GetRelationshipPartUri(new Uri("/", UriKind.RelativeOrAbsolute)));
_log.Debug("About to start signing {0}".format(path));
signatureManager.Sign(toSign, Certificate);
_log.Debug("signed {0}, going to close".format(path));
package.Close();
_log.Debug("closed {0}".format(path));
}
GC.Collect();
}
/// <summary>
/// RemoveAll
/// </summary>
public static OpenXmlPowerToolsDocument RemoveAll(OpenXmlPowerToolsDocument doc)
{
using (OpenXmlMemoryStreamDocument streamDoc = new OpenXmlMemoryStreamDocument(doc))
{
using (Package package = streamDoc.GetPackage())
{
// Creates the PackageDigitalSignatureManager
PackageDigitalSignatureManager digitalSignatureManager = new PackageDigitalSignatureManager(package);
digitalSignatureManager.RemoveAllSignatures();
}
return streamDoc.GetModifiedDocument();
}
}