PackageDigitalSignatureManager Class

Provides a utility class for the creation and verification of digital signatures in a Package.

Namespace: System.IO.Packaging
Assembly: WindowsBase (in windowsbase.dll)

public sealed class PackageDigitalSignatureManager
public final class PackageDigitalSignatureManager
public final class PackageDigitalSignatureManager
You cannot use this managed class in XAML.

PackageDigitalSignatureManager builds on the architecture of Microsoft .NET Framework digital signature classes and provides a utility class for performing common tasks in using digital signatures with Package elements.

For more information about package digital signatures, see the MSDN article Digital Signing Framework of the Open Packaging Conventions available at

The following example shows how to use the PackageDigitalSignatureManager. For the complete sample, see Creating a Package with a Digital Signature Sample.

// Create the DigitalSignature Manager
PackageDigitalSignatureManager dsm =
    new PackageDigitalSignatureManager(package);
dsm.CertificateOption =


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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.

.NET Framework

Supported in: 3.0