RightsManagementInformation Class

Definition

Namespace:

System.IO.Packaging

Assembly:

WindowsBase.dll

Represents Digital Rights Management (DRM) information that is stored in an EncryptedPackageEnvelope.

public ref class RightsManagementInformation

public class RightsManagementInformation

type RightsManagementInformation = class

Public Class RightsManagementInformation

Inheritance

Object

RightsManagementInformation

Examples

The following example shows how to initialize a RightsManagementInformation object for encryption.

WriteStatus("   Signing the UnsignedPublishLicense\n" +
            "       to build the PublishLicense.");
UseLicense authorsUseLicense;
PublishLicense publishLicense =
    unsignedLicense.Sign(_secureEnv, out authorsUseLicense);

WriteStatus("   Binding the author's UseLicense and");
WriteStatus("       obtaining the CryptoProvider.");
CryptoProvider cryptoProvider = authorsUseLicense.Bind(_secureEnv);

WriteStatus("   Creating the EncryptedPackage.");
Stream packageStream = File.OpenRead(packageFile);
EncryptedPackageEnvelope ePackage =
    EncryptedPackageEnvelope.CreateFromPackage(encryptedFile,
        packageStream, publishLicense, cryptoProvider);

WriteStatus("   Adding an author's UseLicense.");
RightsManagementInformation rmi =
    ePackage.RightsManagementInformation;
rmi.SaveUseLicense(author, authorsUseLicense);

ePackage.Close();
WriteStatus("   Done - Package encryption complete.");

WriteStatus("Verifying package encryption.");
if (EncryptedPackageEnvelope.IsEncryptedPackageEnvelope(encryptedFile))
{
    WriteStatus("   Confirmed - '" + encryptedFilename +
                "' is encrypted.");
}
else
{
    MessageBox.Show("ERROR: '" + encryptedFilename +
        "' is NOT ENCRYPTED.", "Encryption Error",
        MessageBoxButton.OK, MessageBoxImage.Error);
    WriteStatus("ERROR: '" + encryptedFilename +
                "' is NOT ENCRYPTED.\n");
    return false;
}

WriteStatus("   Signing the UnsignedPublishLicense" & vbLf & "       to build the PublishLicense.")
Dim authorsUseLicense As UseLicense = Nothing
Dim publishLicense As PublishLicense = unsignedLicense.Sign(_secureEnv, authorsUseLicense)

WriteStatus("   Binding the author's UseLicense and")
WriteStatus("       obtaining the CryptoProvider.")
Dim cryptoProvider As CryptoProvider = authorsUseLicense.Bind(_secureEnv)

WriteStatus("   Creating the EncryptedPackage.")
Dim packageStream As Stream = File.OpenRead(packageFile)
Dim ePackage As EncryptedPackageEnvelope = EncryptedPackageEnvelope.CreateFromPackage(encryptedFile, packageStream, publishLicense, cryptoProvider)

WriteStatus("   Adding an author's UseLicense.")
Dim rmi As RightsManagementInformation = ePackage.RightsManagementInformation
rmi.SaveUseLicense(author, authorsUseLicense)

ePackage.Close()
WriteStatus("   Done - Package encryption complete.")

WriteStatus("Verifying package encryption.")
If EncryptedPackageEnvelope.IsEncryptedPackageEnvelope(encryptedFile) Then
    WriteStatus("   Confirmed - '" & encryptedFilename & "' is encrypted.")
Else
    MessageBox.Show("ERROR: '" & encryptedFilename & "' is NOT ENCRYPTED.", "Encryption Error", MessageBoxButton.OK, MessageBoxImage.Error)
    WriteStatus("ERROR: '" & encryptedFilename & "' is NOT ENCRYPTED." & vbLf)
    Return False
End If

The following example shows how to initialize a RightsManagementInformation object for decryption.

ShowStatus("   Opening the encrypted Package.");
EncryptedPackageEnvelope ePackage =
    EncryptedPackageEnvelope.Open(xpsFile, FileAccess.ReadWrite);
RightsManagementInformation rmi =
    ePackage.RightsManagementInformation;

ShowStatus("   Looking for an embedded UseLicense for user:\n       " +
           currentUserId + " [" + _authentication + "]");
UseLicense useLicense =
    rmi.LoadUseLicense(
        new ContentUser(currentUserId, _authentication));

ReadOnlyCollection<ContentGrant> grants;
if (useLicense == null)
{
    ShowStatus("   No Embedded UseLicense found.\n       " +
               "Attempting to acqure UseLicnese\n       " +
               "from the PublishLicense.");
    PublishLicense pubLicense = rmi.LoadPublishLicense();

    ShowStatus("   Referral information:");

    if (pubLicense.ReferralInfoName == null)
        ShowStatus("       Name: (null)");
    else
        ShowStatus("       Name: " + pubLicense.ReferralInfoName);

    if (pubLicense.ReferralInfoUri == null)
        ShowStatus("    Uri: (null)");
    else
        ShowStatus("    Uri: " +
            pubLicense.ReferralInfoUri.ToString());

    useLicense = pubLicense.AcquireUseLicense(_secureEnv);
    if (useLicense == null)
    {
        ShowStatus("   User DOES NOT HAVE RIGHTS\n       " +
            "to access this document!");
        return false;
    }
}// end:if (useLicense == null)
ShowStatus("   UseLicense acquired.");

ShowStatus("   Opening the encrypted Package.")
Dim ePackage As EncryptedPackageEnvelope = EncryptedPackageEnvelope.Open(xpsFile, FileAccess.ReadWrite)
Dim rmi As RightsManagementInformation = ePackage.RightsManagementInformation

ShowStatus("   Looking for an embedded UseLicense for user:" & vbLf & "       " & currentUserId & " [" & _authentication & "]")
Dim useLicense As UseLicense = rmi.LoadUseLicense(New ContentUser(currentUserId, _authentication))

Dim grants As ReadOnlyCollection(Of ContentGrant)
If useLicense Is Nothing Then
    ShowStatus("   No Embedded UseLicense found." & vbLf & "       " & "Attempting to acqure UseLicnese" & vbLf & "       " & "from the PublishLicense.")
    Dim pubLicense As PublishLicense = rmi.LoadPublishLicense()

    ShowStatus("   Referral information:")

    If pubLicense.ReferralInfoName Is Nothing Then
        ShowStatus("       Name: (null)")
    Else
        ShowStatus("       Name: " & pubLicense.ReferralInfoName)
    End If

    If pubLicense.ReferralInfoUri Is Nothing Then
        ShowStatus("    Uri: (null)")
    Else
        ShowStatus("    Uri: " & pubLicense.ReferralInfoUri.ToString())
    End If

    useLicense = pubLicense.AcquireUseLicense(_secureEnv)
    If useLicense Is Nothing Then
        ShowStatus("   User DOES NOT HAVE RIGHTS" & vbLf & "       " & "to access this document!")
        Return False
    End If
End If ' end:if (useLicense == null)
ShowStatus("   UseLicense acquired.")

Remarks

RightsManagementInformation provides access to the PublishLicense and UseLicense data stored in a rights managed protected Package.

Properties

CryptoProvider

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

Methods

DeleteUseLicense(ContentUser)	Deletes the UseLicense for a specified user from the encrypted rights management data stream.
Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
GetEmbeddedUseLicenses()	Returns a dictionary collection of user and UseLicense key/value pairs from the encrypted rights management data stream.
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetType()	Gets the Type of the current instance. (Inherited from Object)
LoadPublishLicense()	Returns the embedded PublishLicense from the encrypted rights management data stream.
LoadUseLicense(ContentUser)	Returns a specified user's embedded UseLicense from the encrypted rights management data stream.
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
SavePublishLicense(PublishLicense)	Saves a given PublishLicense to the encrypted rights management data stream.
SaveUseLicense(ContentUser, UseLicense)	Saves a given UseLicense for a specified user to the encrypted rights management data stream.
ToString()	Returns a string that represents the current object. (Inherited from Object)

See also

• System.Security.RightsManagement