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PublisherIdentityPermission Class

Represents the identity of a software publisher. This class cannot be inherited.

Namespace: System.Security.Permissions
Assembly: mscorlib (in mscorlib.dll)

'Declaration
<SerializableAttribute> _
<ComVisibleAttribute(True)> _
Public NotInheritable Class PublisherIdentityPermission
	Inherits CodeAccessPermission
'Usage
Dim instance As PublisherIdentityPermission

/** @attribute SerializableAttribute() */ 
/** @attribute ComVisibleAttribute(true) */ 
public final class PublisherIdentityPermission extends CodeAccessPermission
SerializableAttribute 
ComVisibleAttribute(true) 
public final class PublisherIdentityPermission extends CodeAccessPermission
Not applicable.

NoteImportant:

   In the .NET Framework versions 1.0 and 1.1, identity permissions cannot have an Unrestricted permission state value. In the .NET Framework version 2.0, identity permissions can have any permission state value. This means that in version 2.0, identity permissions have the same behavior as permissions that implement the IUnrestrictedPermission interface. That is, a demand for an identity always succeeds, regardless of the identity of the assembly, if the assembly has been granted full trust. For information on executing version 2.0 applications with version 1.1 code access security (CAS) policy, see <legacyV1CASPolicy>.

In the .NET Framework versions 1.0 and 1.1, demands on the identity permissions are effective, even when the calling assembly is fully trusted. That is, although the calling assembly has full trust, a demand for an identity permission fails if the assembly does not meet the demanded criteria. In the .NET Framework version 2.0, demands for identity permissions are ineffective if the calling assembly has full trust. This assures consistency for all permissions, eliminating the treatment of identity permissions as a special case.

NoteNote:

By default, code access security does not check for Publisher evidence. Unless your computer has a custom code group based on the PublisherMembershipCondition class, you can improve performance by bypassing Authenticode signature verification. This is accomplished by configuring the runtime to not provide Publisher evidence for code access security. For more information about how to configure this option and which applications can use it, see the <generatePublisherEvidence> element.

The following code example shows the behavior of the PublisherIdentityPermission class methods.

NoteNote:

The code example is intended to show the behavior of the methods, not to demonstrate their use. In general, the methods of permission classes are used by the security infrastructure; they are not typically used in applications. Generally, only the constructors are used in application code. The created instance validates or controls resource access by using inherited CodeAccessPermission methods such as Demand.

Imports System
Imports System.Security
Imports System.Security.Permissions
Imports System.Security.Cryptography.X509Certificates
Imports System.IO
Imports Microsoft.VisualBasic

Public Class PublisherIdentityDemo


    ' IsSubsetOf determines whether the current permission is a subset of the specified permission.
    Private Function IsSubsetOfDemo() As Boolean

        Dim retCode As Boolean = True

        Dim publisher1, publisher2 As [String]
        Dim pubIdPerm1, pubIdPerm2 As PublisherIdentityPermission

        Dim pubGen1 As New PublisherGenerator()
        Dim pubGen2 As New PublisherGenerator()

        pubGen1.ResetIndex()
        While pubGen1.CreatePublisher(pubIdPerm1, publisher1)
            If pubIdPerm1 Is Nothing Then
                Continue While
            End If
            pubGen2.ResetIndex()
            While pubGen2.CreatePublisher(pubIdPerm2, publisher2)
                If pubIdPerm2 Is Nothing Then
                    Continue While
                End If
                Try
                    ' Check for whether either of the publishers is null.
                    ' An exception will be thrown if either is null.
                    If publisher1 <> "null" AndAlso publisher2 <> "null" Then
                        If pubIdPerm1.IsSubsetOf(pubIdPerm2) Then
                            Console.WriteLine((pubIdPerm1.Certificate.GetName() & " is a subset of " & pubIdPerm2.Certificate.GetName() & ControlChars.Lf))
                        Else
                            Console.WriteLine((pubIdPerm1.Certificate.GetName() & " is not a subset of " & pubIdPerm2.Certificate.GetName() & ControlChars.Lf))
                        End If
                    End If

                Catch
                    Console.WriteLine(("An exception was thrown for " & publisher1 & " is a subset of " & publisher2 & ControlChars.Lf & "."))
                    retCode = False
                End Try

            End While

        End While


        Return retCode
    End Function 'IsSubsetOfDemo

    ' Union creates a new permission that is the union of the current permission and the specified permission.
    Private Function UnionDemo() As Boolean

        Dim retCode As Boolean = True

        Dim publisher1, publisher2 As [String]
        Dim pubIdPerm1, pubIdPerm2 As PublisherIdentityPermission
        Dim p3 As IPermission

        Dim pubGen1 As New PublisherGenerator()
        Dim pubGen2 As New PublisherGenerator()

        pubGen1.ResetIndex()
        While pubGen1.CreatePublisher(pubIdPerm1, publisher1)
            If pubIdPerm1 Is Nothing Or pubIdPerm1.Certificate Is Nothing Then
                Continue While
            End If
            pubGen2.ResetIndex()
            Try
                While pubGen2.CreatePublisher(pubIdPerm2, publisher2)
                    If pubIdPerm2 Is Nothing Or pubIdPerm2.Certificate Is Nothing Then
                        Continue While
                    End If
                    p3 = pubIdPerm1.Union(pubIdPerm2)

                    If Not (p3 Is Nothing) Then
                        Console.WriteLine(("The union of " & pubIdPerm1.Certificate.GetName() & " and " & pubIdPerm2.Certificate.GetName() & " = " & CType(p3, PublisherIdentityPermission).Certificate.GetName()))
                    Else
                        Console.WriteLine(("The union of " & pubIdPerm1.Certificate.GetName() & " and " & pubIdPerm2.Certificate.GetName() & " = null."))
                    End If

                End While
            Catch e As Exception
                Console.WriteLine(e.Message)
            End Try


        End While


        Return retCode
    End Function 'UnionDemo

    ' Intersect creates and returns a new permission that is the intersection of the 
    ' current permission and the permission specified.
    Private Function IntersectDemo() As Boolean

        Dim retCode As Boolean = True

        Dim publisher1, publisher2 As [String]
        Dim pubIdPerm1, pubIdPerm2, p3 As PublisherIdentityPermission

        Dim pubGen1 As New PublisherGenerator()
        Dim pubGen2 As New PublisherGenerator()

        pubGen1.ResetIndex()
        While pubGen1.CreatePublisher(pubIdPerm1, publisher1)
            If pubIdPerm1 Is Nothing Or pubIdPerm1.Certificate Is Nothing Then
                Continue While
            End If
            pubGen2.ResetIndex()
            While pubGen2.CreatePublisher(pubIdPerm2, publisher2)
                If pubIdPerm2 Is Nothing Or pubIdPerm2.Certificate Is Nothing Then
                    Continue While
                End If
                p3 = CType(pubIdPerm1.Intersect(pubIdPerm2), PublisherIdentityPermission)
                If Not (p3 Is Nothing) AndAlso Not (p3.Certificate Is Nothing) Then

                    Console.WriteLine(("The intersection of " & pubIdPerm1.Certificate.GetName() & " and  " & pubIdPerm2.Certificate.GetName() & " = " & CType(p3, PublisherIdentityPermission).Certificate.GetName()))
                Else
                    Console.WriteLine(("The intersection of " & pubIdPerm1.Certificate.GetName() & " and " & pubIdPerm2.Certificate.GetName() & " is null."))
                End If

            End While

        End While


        Return retCode
    End Function 'IntersectDemo

    '//Copy creates and returns an identical copy of the current permission.
    Private Function CopyDemo() As Boolean

        Dim retCode As Boolean = True

        Dim publisher1 As [String]
        Dim pubIdPerm1, pubIdPerm2 As PublisherIdentityPermission

        Dim pubGen1 As New PublisherGenerator()
        Dim pubGen2 As New PublisherGenerator()

        pubGen1.ResetIndex()
        While pubGen1.CreatePublisher(pubIdPerm1, publisher1)
            If pubIdPerm1 Is Nothing Then
                Continue While
            End If
            pubGen2.ResetIndex()
            Try
                pubIdPerm2 = CType(pubIdPerm1.Copy(), PublisherIdentityPermission)
                If Not (pubIdPerm2 Is Nothing) Then
                    Console.WriteLine(("Result of copy = " & pubIdPerm2.ToString() & ControlChars.Lf))
                Else
                    Console.WriteLine("Result of copy is null. " & ControlChars.Lf)
                End If


            Catch e As Exception
                Console.WriteLine(("Copy failed :" & pubIdPerm1.ToString() & e.ToString()))
                Continue While
            End Try

        End While


        Return retCode
    End Function 'CopyDemo

    ' ToXml creates an XML encoding of the permission and its current state; FromXml
    ' reconstructs a permission with the specified state from the XML encoding. 
    Private Function ToFromXmlDemo() As Boolean

        Dim retCode As Boolean = True

        Dim publisher1 As [String]
        Dim pubIdPerm1, pubIdPerm2 As PublisherIdentityPermission

        Dim pubGen1 As New PublisherGenerator()
        Dim pubGen2 As New PublisherGenerator()

        pubGen1.ResetIndex()
        While pubGen1.CreatePublisher(pubIdPerm1, publisher1)
            If pubIdPerm1 Is Nothing Then
                Continue While
            End If
            pubGen2.ResetIndex()
            Try
                pubIdPerm2 = New PublisherIdentityPermission(PermissionState.None)
                pubIdPerm2.FromXml(pubIdPerm1.ToXml())
                Console.WriteLine(("Result of ToFromXml = " & pubIdPerm2.ToString() & ControlChars.Lf))
            Catch e As Exception
                Console.WriteLine(("ToFromXml failed :" & pubIdPerm1.ToString() & e.ToString()))
                Continue While
            End Try

        End While


        Return retCode
    End Function 'ToFromXmlDemo

    ' Invoke all demos.
    Public Function RunDemo() As Boolean

        Dim ret As Boolean = True
        Dim retTmp As Boolean

        ' Call the IsSubsetOf demo.
        retTmp = IsSubsetOfDemo()
        If retTmp Then
            Console.Out.WriteLine("IsSubsetOf demo completed successfully.")
        Else
            Console.Out.WriteLine("IsSubsetOf demo failed.")
        End If
        ret = retTmp AndAlso ret
        Console.WriteLine("************************************************************************")

        ' Call the Union demo.
        retTmp = UnionDemo()
        If retTmp Then
            Console.Out.WriteLine("Union demo completed successfully.")
        Else
            Console.Out.WriteLine("Union demo failed.")
        End If
        ret = retTmp AndAlso ret
        Console.WriteLine("************************************************************************")

        ' Call the Intersect demo.	
        retTmp = IntersectDemo()
        If retTmp Then
            Console.Out.WriteLine("Intersect demo completed successfully.")
        Else
            Console.Out.WriteLine("Intersect demo failed.")
        End If
        ret = retTmp AndAlso ret
        Console.WriteLine("************************************************************************")


        ' Call the Copy demo.	
        retTmp = CopyDemo()
        If retTmp Then
            Console.Out.WriteLine("Copy demo completed successfully. ")
        Else
            Console.Out.WriteLine("Copy demo failed.")
        End If
        ret = retTmp AndAlso ret
        Console.WriteLine("************************************************************************")

        ' Call the ToFromXml demo	
        retTmp = ToFromXmlDemo()
        If retTmp Then
            Console.Out.WriteLine("ToFromXml demo completed successfully.")
        Else
            Console.Out.WriteLine("ToFromXml demo failed.")
        End If
        ret = retTmp AndAlso ret
        Console.WriteLine("************************************************************************")

        Return ret
    End Function 'RunDemo


    ' Test harness.
    Public Overloads Shared Sub Main(ByVal args() As [String])

        Try
            Dim democase As New PublisherIdentityDemo()
            Dim ret As Boolean = democase.RunDemo()
            If ret Then
                Console.Out.WriteLine("The PublisherIdentityPermission demo completed successfully.")
                Console.Out.WriteLine("Press the Enter key to exit.")
                Dim consoleInput As String = Console.ReadLine()
                System.Environment.ExitCode = 100
            Else
                Console.Out.WriteLine("The PublisherIdentityPermission demo failed.")
                Console.Out.WriteLine("Press the Enter key to exit.")
                Dim consoleInput As String = Console.ReadLine()
                System.Environment.ExitCode = 101
            End If
        Catch e As Exception
            Console.Out.WriteLine("The PublisherIdentityPermission demo failed.")
            Console.WriteLine(e.ToString())
            Console.Out.WriteLine("Press the Enter key to exit.")
            Dim consoleInput As String = Console.ReadLine()
            System.Environment.ExitCode = 101
        End Try
    End Sub 'Main
End Class 'PublisherIdentityDemo


' This class generates PublisherIdentityPermission objects.

Friend Class PublisherGenerator
    Private publisherCertificate(1) As X509Certificate
    Private publisherIndex As Integer = 0


    Public Sub New()

        Try
            Dim fs1 As New FileStream("MyCert1.cer", FileMode.Open)
            Dim certSBytes1(Fix(fs1.Length)) As [Byte]
            fs1.Read(certSBytes1, 0, Fix(fs1.Length))
            publisherCertificate(0) = New X509Certificate(certSBytes1)
            fs1.Close()
            Dim fs2 As New FileStream("MyCert2.cer", FileMode.Open)
            Dim certSBytes2(Fix(fs2.Length)) As [Byte]
            fs2.Read(certSBytes2, 0, Fix(fs2.Length))
            publisherCertificate(1) = New X509Certificate(certSBytes2)

            fs2.Close()

            ResetIndex()

        Catch e As Exception

            Console.WriteLine(("Cannot create certificate : " & e.ToString()))
            Console.Out.WriteLine("PublisherIdentityPermission demo failed.")
            System.Environment.ExitCode = 101
        End Try
    End Sub 'New


    Public Sub ResetIndex()

        publisherIndex = 0
    End Sub 'ResetIndex

    ' CreatePublisher creates a PublisherIdentityPermission.
    Public Function CreatePublisher(ByRef publisherPerm As PublisherIdentityPermission, ByRef publisher As [String]) As Boolean

        If publisherIndex >= publisherCertificate.Length & 1 Then
            publisherPerm = Nothing
            publisher = "null"
            Return False
        End If

        If publisherIndex >= publisherCertificate.Length Then
            publisherPerm = New PublisherIdentityPermission(PermissionState.None)
            publisher = "null"
            publisherIndex &= 1
            Return True
        End If

        Dim cert As X509Certificate = publisherCertificate(publisherIndex)
        publisherIndex = publisherIndex + 1
        publisher = cert.ToString()
        Try
            publisherPerm = New PublisherIdentityPermission(cert)
            Return True
        Catch e As Exception
            Console.WriteLine(("Cannot create PublisherIdentityPermission: " & publisher & " " & e.ToString()))
            publisherPerm = New PublisherIdentityPermission(PermissionState.None)
            publisher = "null"
            Return True
        End Try
    End Function 'CreatePublisher 
End Class 'PublisherGenerator
' End of PublisherGenerator.

import System.*;
import System.Security.*;
import System.Security.Permissions.*;
import System.Security.Cryptography.X509Certificates.*;
import System.IO.*;

/** @assembly CLSCompliant(true)
 */

public class PublisherIdentityDemo
{
    // IsSubsetOf determines whether the current permission is a subset 
    // of the specified permission.
    private boolean IsSubsetOfDemo() 
    {
        boolean retCode = true;
        String publisher1 = null;
        String publisher2 = null;
        PublisherIdentityPermission pubIdPerm1 = null; 
        PublisherIdentityPermission pubIdPerm2 = null;
        
        PublisherGenerator pubGen1 =  new PublisherGenerator();
        PublisherGenerator pubGen2 =  new PublisherGenerator();
        
        pubGen1.ResetIndex();
        while(pubGen1.CreatePublisher(pubIdPerm1, publisher1)) {
            if (pubIdPerm1 == null) {
                continue ;
            }
            pubGen2.ResetIndex();
            while(pubGen2.CreatePublisher(pubIdPerm2, publisher2)) {
                if (pubIdPerm2 == null) {
                    continue ;
                }
                
                try {
                    // Check for whether either of the publishers is null.
                    // An exception will be thrown if either is null.
                    if (publisher1 != "null" && publisher2 != "null") {
                        if ( pubIdPerm1.IsSubsetOf(pubIdPerm2)  ) {
                            Console.WriteLine((pubIdPerm1.get_Certificate().
                            GetName() + " is a subset of " 
                                + pubIdPerm2.get_Certificate().GetName() 
                                + "\n"));
                        }
                        else {
                            Console.WriteLine((pubIdPerm1.get_Certificate().
                            GetName() + " is not a subset of " 
                                + pubIdPerm2.get_Certificate().GetName() 
                                + "\n"));
                        }
                    }
                }
                catch(System.Exception exp){
                        Console.WriteLine(("An exception was thrown for " 
                            + publisher1 + " is a subset of " + publisher2 
                            + "\n."));
                        retCode = false;
                }
            }
        }
        return retCode ;
    } //IsSubsetOfDemo   

    // Union creates a new permission that is the union of the current 
    // permission and the specified permission.
    private boolean UnionDemo() 
    {
        boolean retCode = true;
        String publisher1 = null;
        String publisher2 = null;
        PublisherIdentityPermission pubIdPerm1 = null;
        PublisherIdentityPermission pubIdPerm2 = null;
        IPermission p3;
        
        PublisherGenerator pubGen1 =  new PublisherGenerator();
        PublisherGenerator pubGen2 =  new PublisherGenerator();
        
        pubGen1.ResetIndex();
        while(pubGen1.CreatePublisher(pubIdPerm1, publisher1)) {
                if (pubIdPerm1 == null | pubIdPerm1.get_Certificate()
                    == null) {
                    continue;
                }
                pubGen2.ResetIndex();
                while(pubGen2.CreatePublisher(pubIdPerm2, publisher2)) {
                if (pubIdPerm2 == null | pubIdPerm2.get_Certificate() 
                    == null) {
                    continue;
                }
                p3 = pubIdPerm1.Union(pubIdPerm2);
                
                if (p3 != null) {
                    Console.WriteLine(("The union of " 
                        + pubIdPerm1.get_Certificate().GetName() + " and " 
                        + pubIdPerm2.get_Certificate().GetName() + " = " 
                        + ((PublisherIdentityPermission)(p3)).get_Certificate().
                        GetName()));
                }
                else {
                    Console.WriteLine(("The union of " 
                        + pubIdPerm1.get_Certificate().GetName() 
                        + " and " + pubIdPerm2.get_Certificate().GetName() 
                        + " = null."));
                }
            }
        } 
        return retCode ;
    } //UnionDemo    

    // Intersect creates and returns a new permission that is the 
    // intersection of the current permission and the permission specified.
    private boolean IntersectDemo() 
    {
        boolean retCode = true;
        String publisher1 = null;
        String publisher2 = null;
        PublisherIdentityPermission pubIdPerm1 = null;
        PublisherIdentityPermission pubIdPerm2 = null;
        PublisherIdentityPermission p3;
        
        PublisherGenerator pubGen1 =  new PublisherGenerator();
        PublisherGenerator pubGen2 =  new PublisherGenerator();
        
        pubGen1.ResetIndex();
        while(pubGen1.CreatePublisher(pubIdPerm1, publisher1)) {
                if (pubIdPerm1 == null | pubIdPerm1.get_Certificate() 
                    == null) {
                    continue;
                }
                pubGen2.ResetIndex();
                while(pubGen2.CreatePublisher(pubIdPerm2, publisher2)) {
                if (pubIdPerm2 == null | pubIdPerm2.get_Certificate() 
                    == null) {
                    continue;
                }
                p3 =((PublisherIdentityPermission)(
                pubIdPerm1.Intersect(pubIdPerm2)));
                if (p3 != null && p3.get_Certificate() != null) {
                    Console.WriteLine(("The intersection of " 
                        + pubIdPerm1.get_Certificate().GetName() 
                        + " and " + pubIdPerm2.get_Certificate().GetName() 
                        + " = " + ((PublisherIdentityPermission)(p3)).
                        get_Certificate().GetName()));
                }
                else {
                    Console.WriteLine(("The intersection of " 
                        + pubIdPerm1.get_Certificate().GetName() 
                        + " and " + pubIdPerm2.get_Certificate().GetName() 
                        + " is null."));
                }
            }
        } 
        return retCode ;
    } //IntersectDemo    

    //Copy creates and returns an identical copy of the current permission.
    private boolean CopyDemo() 
    {
        boolean retCode = true;
        String publisher1 = null;
        PublisherIdentityPermission pubIdPerm1 = null;
        PublisherIdentityPermission pubIdPerm2 = null;
        
        PublisherGenerator pubGen1 =  new PublisherGenerator();
        PublisherGenerator pubGen2 =  new PublisherGenerator();
        
        pubGen1.ResetIndex();
        while(pubGen1.CreatePublisher(pubIdPerm1, publisher1)) {
            if (pubIdPerm1 == null) {
                continue ;
            }
            pubGen2.ResetIndex();
            try {
                pubIdPerm2 =((PublisherIdentityPermission)(pubIdPerm1.Copy()));
                if ( pubIdPerm2  != null  ) {
                    Console.WriteLine(("Result of copy = " + 
                    pubIdPerm2.ToString() + "\n"));
                }
                else {
                    Console.WriteLine("Result of copy is null. \n");
                }
            } 
            catch(System.Exception e) {
                Console.WriteLine(("Copy failed :" 
                    + pubIdPerm1.ToString() + e));
                continue ;
            }
        }
        return retCode ;
    } //CopyDemo

    // ToXml creates an XML encoding of the permission and its 
    // current state; FromXml reconstructs a permission with the specified 
    // state from the XML encoding.
    private boolean ToFromXmlDemo() 
    {
        boolean retCode = true;
        String publisher1 = null;
        PublisherIdentityPermission pubIdPerm1 = null;
        PublisherIdentityPermission pubIdPerm2 = null;
        
        PublisherGenerator pubGen1 =  new PublisherGenerator();
        PublisherGenerator pubGen2 =  new PublisherGenerator();
        
        pubGen1.ResetIndex();
        while(pubGen1.CreatePublisher(pubIdPerm1, publisher1)) {
            if (pubIdPerm1 == null) {
                continue ;
            }
            pubGen2.ResetIndex();
            try {
                pubIdPerm2 = 
                    new PublisherIdentityPermission(PermissionState.None);
                pubIdPerm2.FromXml(pubIdPerm1.ToXml());
                Console.WriteLine(("Result of ToFromXml = " 
                    + pubIdPerm2.ToString() + "\n"));
            }
            catch(System.Exception e) {
                Console.WriteLine(("ToFromXml failed :" 
                    + pubIdPerm1.ToString() + e));
                continue ;
            }
        }
        return retCode ;
    } //ToFromXmlDemo

    // Invoke all demos.
    public boolean RunDemo() 
    {
        boolean ret = true;
        boolean retTmp;
        
        // Call the IsSubsetOf demo.
        if (retTmp = IsSubsetOfDemo()) {
            Console.get_Out().WriteLine("IsSubsetOf demo " 
                + "completed successfully.");
        }
        else {
            Console.get_Out().WriteLine("IsSubsetOf demo failed.");
        }
        ret = retTmp && ret;
        Console.WriteLine("******************************" 
            + "******************************************");
        
        // Call the Union demo.
        if (retTmp = UnionDemo()) {
            Console.get_Out().WriteLine("Union demo completed successfully.");
        }
        else {
            Console.get_Out().WriteLine("Union demo failed.");
        }
        ret = retTmp && ret;
        Console.WriteLine("************************************" 
            + "************************************");
        
        // Call the Intersect demo.
        if (retTmp = IntersectDemo()) {
            Console.get_Out().WriteLine("Intersect demo " 
                + "completed successfully.");
        }
        else {
            Console.get_Out().WriteLine("Intersect demo failed.");
        }
        ret = retTmp && ret;
        Console.WriteLine("*****************************************" 
            + "*******************************");
        
        // Call the Copy demo.
        if (retTmp = CopyDemo()) {
            Console.get_Out().WriteLine("Copy demo completed successfully. ");
        }
        else {
            Console.get_Out().WriteLine("Copy demo failed.");
        }
        ret = retTmp && ret;
        Console.WriteLine("*********************************************" 
            + "***************************");
        
        // Call the ToFromXml demo
        if (retTmp = ToFromXmlDemo()) {
            Console.get_Out().WriteLine("ToFromXml demo " 
                + "completed successfully.");
        }
        else {
            Console.get_Out().WriteLine("ToFromXml demo failed.");
        }
        ret = retTmp && ret;
        Console.WriteLine("**********************************" 
            + "**************************************");
        return ret ;
    } //RunDemo

    // Test harness.
    public static void main(String[] args)
    {
        try {
            PublisherIdentityDemo democase =  new PublisherIdentityDemo();
            boolean ret = democase.RunDemo();
            if (ret) {
                Console.get_Out().WriteLine("The " 
                    + "PublisherIdentityPermission demo completed "
                    + "successfully.");
                Console.get_Out().WriteLine("Press the Enter key to exit.");
                String consoleInput = Console.ReadLine();
                System.Environment.set_ExitCode(100);
            }
            else {
                Console.get_Out().WriteLine("The " 
                    + "PublisherIdentityPermission demo failed.");
                Console.get_Out().WriteLine("Press the Enter key to exit.");
                String consoleInput = Console.ReadLine();
                System.Environment.set_ExitCode(101);
            }
        }
        catch(System.Exception e) {
            Console.get_Out().WriteLine("The " 
                + "PublisherIdentityPermission demo failed.");
            Console.WriteLine(e.ToString());
            Console.get_Out().WriteLine("Press the Enter key to exit.");
            String consoleInput = Console.ReadLine();
            System.Environment.set_ExitCode(101);
        }
    } 
} //PublisherIdentityDemo

// This class generates PublisherIdentityPermission objects.
class PublisherGenerator
{
    private X509Certificate publisherCertificate[] = new X509Certificate[2];
    private int publisherIndex = 0;
    public PublisherGenerator() 
    {
        try {
            FileStream fs1 =  new FileStream("MyCert1.cer", FileMode.Open);
            System.Byte certSBytes1[] = 
                new System.Byte[(int)(fs1.get_Length())];
            fs1.Read((ubyte[])certSBytes1, 0, (int)(fs1.get_Length()));
            publisherCertificate .set_Item( 0 , 
                new X509Certificate((ubyte[])certSBytes1) );
            fs1.Close();
            FileStream fs2 =  new FileStream("MyCert2.cer", FileMode.Open);
            System.Byte certSBytes2[] = 
                new System.Byte[(int)(fs2.get_Length())];
            fs2.Read((ubyte[])certSBytes2, 0, (int)(fs2.get_Length()));
            publisherCertificate .set_Item( 1 , 
                new X509Certificate((ubyte[])certSBytes2) );
            fs2.Close();
            ResetIndex();
        } 
        catch(System.Exception e) {
            Console.WriteLine(("Cannot create certificate : " + e));
            Console.get_Out().WriteLine("PublisherIdentityPermission " 
                + "demo failed.");
            System.Environment.set_ExitCode(101);
        }
    } //PublisherGenerator  

    public void ResetIndex()
    {
        publisherIndex = 0;
    } //ResetIndex

    // CreatePublisher creates a PublisherIdentityPermission.
    public boolean CreatePublisher(
        PublisherIdentityPermission publisherPerm, String publisher) 
    {
        if (publisherIndex >= publisherCertificate.length + 1) {
            publisherPerm = null;
            publisher = "null";
            return false ;
        }
        if (publisherIndex >= publisherCertificate.length) {
            publisherPerm = 
                new PublisherIdentityPermission(PermissionState.None);

            publisher = "null";
            publisherIndex++;
            return true ;
        }
        X509Certificate cert = publisherCertificate[publisherIndex++];
        publisher = cert.ToString();
        try {
            publisherPerm = new PublisherIdentityPermission(cert);
            return true ;
        }
        catch(System.Exception e) {
            Console.WriteLine(("Cannot create PublisherIdentityPermission: " 
                + publisher + " " + e));
            publisherPerm = 
                new PublisherIdentityPermission(PermissionState.None);
            publisher = "null";
            return true ;
        }
    } //CreatePublisher
} //PublisherGenerator 

System.Object
   System.Security.CodeAccessPermission
    System.Security.Permissions.PublisherIdentityPermission

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 Millennium Edition, 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, 2.0, 1.1, 1.0

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