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RightsManagementInformation.CryptoProvider Property

Gets or sets the CryptoProvider for accessing the package's encrypted rights management data stream.

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

public CryptoProvider CryptoProvider { get; set; }
/** @property */
public CryptoProvider get_CryptoProvider ()

/** @property */
public void set_CryptoProvider (CryptoProvider value)

public function get CryptoProvider () : CryptoProvider

public function set CryptoProvider (value : CryptoProvider)

You cannot use this property in XAML.

Property Value

The CryptoProvider for accessing the rights management information.

The following example shows how to set the CryptoProvider property. For the full sample, see Rights Managed Package Viewer Sample.

ShowStatus("   Binding UseLicense with the SecureEnvironment" +
         "\n       to obtain the CryptoProvider.");
rmi.CryptoProvider = useLicense.Bind(_secureEnv);

ShowStatus("   Obtaining BoundGrants.");
grants = rmi.CryptoProvider.BoundGrants;

// You can access the Package via GetPackage() at this point.

rightsBlock.Text = "GRANTS LIST\n-----------\n";
foreach (ContentGrant grant in grants)
    rightsBlock.Text += "USER  :" + grant.User.Name + " [" +
        grant.User.AuthenticationType + "]\n";
    rightsBlock.Text += "RIGHT :" + grant.Right.ToString()+"\n";
    rightsBlock.Text += "    From:  " + grant.ValidFrom + "\n";
    rightsBlock.Text += "    Until: " + grant.ValidUntil + "\n";

The following example shows how to access the CryptoProvider property. For the full sample, see Rights Managed Package Viewer Sample.

if (rmi.CryptoProvider.CanDecrypt == true)
    ShowStatus("   Decryption granted.");
    ShowStatus("   CANNOT DECRYPT!");

ShowStatus("   Getting the Package from\n" +
           "      the EncryptedPackage.");
_xpsPackage = ePackage.GetPackage();
if (_xpsPackage == null)
    MessageBox.Show("Unable to get Package.");
    return false;

// Set a PackageStore Uri reference for the encrypted stream.
// ("sdk://packLocation" is a pseudo URI used by
//  PackUriHelper.Create to define the parserContext.BaseURI
//  that XamlReader uses to access the encrypted data stream.)
Uri packageUri = new Uri(@"sdk://packLocation", UriKind.Absolute);
// Add the URI package
PackageStore.AddPackage(packageUri, _xpsPackage);
// Determine the starting part for the package.
PackagePart startingPart = GetPackageStartingPart(_xpsPackage);

// Set the DocViewer.Document property.
ShowStatus("   Opening in DocumentViewer.");
ParserContext parserContext = new ParserContext();
parserContext.BaseUri = PackUriHelper.Create(
                            packageUri, startingPart.Uri);
parserContext.XamlTypeMapper = XamlTypeMapper.DefaultMapper;
DocViewer.Document = XamlReader.Load(
    startingPart.GetStream(), parserContext)
        as IDocumentPaginatorSource;

// Enable document menu controls.
menuFileClose.IsEnabled = true;
menuFilePrint.IsEnabled = true;
menuViewIncreaseZoom.IsEnabled = true;
menuViewDecreaseZoom.IsEnabled = true;

// Give the DocumentViewer focus.

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
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