XpsDigSigPartAlteringRestrictions Enumeration
This enumeration has a FlagsAttribute attribute that allows a bitwise combination of its member values.
Namespace: System.Windows.Xps.PackagingAssembly: ReachFramework (in reachframework.dll)
'Declaration <FlagsAttribute> _ Public Enumeration XpsDigSigPartAlteringRestrictions 'Usage Dim instance As XpsDigSigPartAlteringRestrictions
/** @attribute FlagsAttribute() */ public enum XpsDigSigPartAlteringRestrictions
FlagsAttribute public enum XpsDigSigPartAlteringRestrictions
<object property="EnumerationValue" .../>
This enumeration has a FlagsAttribute that allows a bitwise combination of its member values.
Parts that are specified as excluded from the digital signature can be modified without invalidating the signature. For example, if a document is to be signed by more than one person, the SignatureOrigin part needs to be excluded from the signature when the document is first signed. (Exclusions are specified in the restrictions parameter of the call to SignDigitally.) If the SignatureOrigin part is not excluded, any additional signatures invalidate the signature of the first signer.
For more information about digital signatures, see the MSDN article Digital Signing Framework of the Open Packaging Conventions available at http://go.microsoft.com/fwlink/?LinkId=74494.
For more information on the Core Properties and Signature Origin parts, see Chapter 3 of the Open Packaging Conventions specification available for download at http://go.microsoft.com/fwlink/?LinkID=71255.
The following example shows how to use this enumeration to digitally sign an XPS document.
// ------------------------------ SignXps ----------------------------- /// <summary> /// Signs an XPS document with a given X509 certificate, and if one /// exists, associates the signature with a given SignatureDefintion /// spotId GUID.</summary> /// <param name="xpsDocument"> /// The XPS document to sign.</param> /// <param name="cert"> /// The X509 certificate to use for signing.</param> /// <param name="spotId"> /// The nullable spotId GUID of the signature definition.</param> public void SignXps( XpsDocument xpsDocument, X509Certificate cert, Guid? spotId ) { // If there's a SignatureDefinition spotId, // associate it with the signature. if (spotId != null) { xpsDocument.SignDigitally( cert, true, XpsDigSigPartAlteringRestrictions.None, spotId.Value); } else { xpsDocument.SignDigitally( cert, true, XpsDigSigPartAlteringRestrictions.None); } }// end:SignXps()
For the complete sample, see Read-Write-Sign an XPS Document Sample.
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.