DataProtectionPermission クラス
アセンブリ: System.Security (system.security.dll 内)

<SerializableAttribute> _ Public NotInheritable Class DataProtectionPermission Inherits CodeAccessPermission Implements IUnrestrictedPermission
[SerializableAttribute] public sealed class DataProtectionPermission : CodeAccessPermission, IUnrestrictedPermission
[SerializableAttribute] public ref class DataProtectionPermission sealed : public CodeAccessPermission, IUnrestrictedPermission


DataProtectionPermission クラスのメンバを使用する方法を次のコード例に示します。
Imports System Imports System.Security.Permissions Imports System.Security.Cryptography Imports System.Security Imports System.IO <Assembly: DataProtectionPermission( _ SecurityAction.RequestMinimum, _ Flags:=DataProtectionPermissionFlags.ProtectData)> Public Class Form1 Inherits System.Windows.Forms.Form ' Create a byte array for additional entropy when using the Protect ' and Unprotect methods. Private s_aditionalEntropy() As Byte = {9, 8, 7, 6, 5} Private encryptedSecret() As Byte Private originalData() As Byte ' Event handler for Run button. Private Sub Button1_Click( _ ByVal sender As System.Object, _ ByVal e As System.EventArgs) Handles Button1.Click tbxOutput.Cursor = Cursors.WaitCursor tbxOutput.Text = "" Write("Creating a permission with the Flags property = ") WriteLine("ProtectData.") Dim sp As New DataProtectionPermission( _ DataProtectionPermissionFlags.ProtectData) ' Deny the permission to protect data. sp.Deny() ' The following code results in an exception due to an attempt ' to protect data. ProtectData() ' Remove the Deny for ProtectData permission. CodeAccessPermission.RevertDeny() ' The call to protect data will now succeed. ProtectData() Dim sp2 As New DataProtectionPermission( _ DataProtectionPermissionFlags.UnprotectData) sp2.Deny() ' The following code results in an exception due to an attempt ' to unprotect data. UnprotectData() ' Remove the Deny for UnprotectData permission. CodeAccessPermission.RevertDeny() UnprotectData() ' Demonstrate the attribute. TryProtectData() ' Demonstrate the behavior of the class members. ShowMembers() ' Reset the cursor and conclude application. WriteLine(vbCrLf + "This sample completed successfully;" + _ " press Exit to continue.") tbxOutput.Cursor = Cursors.Default End Sub 'Deny the permission the ability to add to a store. <DataProtectionPermission( _ SecurityAction.Deny, _ Flags:=DataProtectionPermissionFlags.ProtectData)> _ Private Sub TryProtectData() Try ProtectData() Catch ex As SecurityException Dim protectionPermission As DataProtectionPermission protectionPermission = _ CType(ex.DenySetInstance, DataProtectionPermission) WriteLine("Security exception thrown when attempting: " + _ protectionPermission.Flags.ToString()) End Try End Sub ' The following method is intended to demonstrate only the behavior of ' DataProtectionPermission class members,and not their practical usage. ' Most properties and methods in this class are used for the resolution ' and enforcement of security policy by the security infrastructure code. Private Sub ShowMembers() WriteLine("Creating four DataProtectionPermissions.") Write("Creating the first permission with the Flags property = ") WriteLine("ProtectData.") Dim sp1 As New DataProtectionPermission( _ DataProtectionPermissionFlags.ProtectData) Write("Creating the second permission with the Flags property = ") WriteLine("AllFlags.") Dim sp2 As New DataProtectionPermission( _ DataProtectionPermissionFlags.AllFlags) Write("Creating the third permission with a permission state = ") WriteLine("Unrestricted.") Dim sp3 As New DataProtectionPermission(PermissionState.Unrestricted) Write("Creating the fourth permission with a permission state = ") WriteLine("None.") Dim sp4 As New DataProtectionPermission(PermissionState.None) Write("Is the permission with all flags set (AllFlags) a subset of ") Write("the permission with an Unrestricted permission state?") If (sp2.IsSubsetOf(sp3)) Then WriteLine("Yes") Else WriteLine("No") End If Write("Is the permission with ProtectData access a subset of the") Write(" permission with AllFlags set? ") If (sp1.IsSubsetOf(sp2)) Then WriteLine("Yes") Else WriteLine("No") End If Write("Is the third permission unrestricted? ") If (sp3.IsUnrestricted()) Then WriteLine("Yes") Else WriteLine("No") End If WriteLine("Copying the second permission to the fourth permission.") sp4 = CType(sp2.Copy(), DataProtectionPermission) Write("Is the fourth permission equal to the second permission? ") If (sp4.Equals(sp2)) Then WriteLine("Yes") Else WriteLine("No") End If Write("Creating the intersection of the second and first") WriteLine("permissions.") sp4 = CType(sp2.Intersect(sp1), DataProtectionPermission) WriteLine("The value of the Flags property is: " + _ sp4.Flags.ToString()) WriteLine("Creating the union of the second and first permissions.") sp4 = CType(sp2.Union(sp1), DataProtectionPermission) Write("Result of the union of the second permission with the first: ") WriteLine(sp4.Flags.ToString()) WriteLine("Using an XML roundtrip to reset the fourth permission.") sp4.FromXml(sp2.ToXml()) Write("Does the XML roundtrip result equal the original permission? ") If (sp4.Equals(sp2)) Then WriteLine("Yes") Else WriteLine("No") End If End Sub ' Create a simple byte array containing data to be encrypted. Public Sub ProtectData() Dim secret() As Byte = {0, 1, 2, 3, 4, 1, 2, 3, 4} ' Encrypt the data. encryptedSecret = Protect(secret) If (Not encryptedSecret Is Nothing) Then WriteLine("The encrypted byte array is:") PrintValues(encryptedSecret) End If End Sub ' Decrypt the data and store in a byte array. Public Sub UnprotectData() originalData = Unprotect(encryptedSecret) If (Not originalData Is Nothing) Then WriteLine("The original data is:" + Environment.NewLine) PrintValues(originalData) End If End Sub ' Encrypt data in the specified byte array. Public Function Protect(ByVal data() As Byte) As Byte() Try ' Encrypt the data using DataProtectionScope.CurrentUser. The ' result can be decrypted only by the user who encrypted the data. Return ProtectedData.Protect( _ data, _ s_aditionalEntropy, _ DataProtectionScope.CurrentUser) Catch ex As CryptographicException WriteLine("Data was not encrypted. An error has occurred.") WriteLine(ex.ToString()) Return Nothing Catch securityException As SecurityException WriteLine("Insufficient permissions. An error has occurred.") WriteLine(securityException.ToString()) Return Nothing End Try End Function Public Function Unprotect(ByVal data() As Byte) As Byte() Try ' Decrypt the data using DataProtectionScope.CurrentUser. ' The result can be decrypted only by the same current user. Return ProtectedData.Unprotect( _ data, _ s_aditionalEntropy, _ DataProtectionScope.CurrentUser) Catch ex As CryptographicException WriteLine("Data was not decrypted. An error has occurred.") WriteLine(ex.ToString()) Return Nothing Catch securityException As SecurityException WriteLine("Insufficient permissions. An error has occurred.") WriteLine(securityException.ToString()) Return Nothing End Try End Function Public Sub PrintValues(ByVal myArr() As Byte) For Each i As Byte In myArr Write(" " + i.ToString()) Next WriteLine("") End Sub ' Write the specified message and a carriage return to the output textbox. Private Sub WriteLine(ByVal message As String) tbxOutput.AppendText(message + vbCrLf) End Sub ' Write the specified message to the output textbox. Private Sub Write(ByVal message As String) tbxOutput.AppendText(message) End Sub ' Event handler for Exit button. Private Sub Button2_Click( _ ByVal sender As System.Object, _ ByVal e As System.EventArgs) Handles Button2.Click Application.Exit() End Sub #Region " Windows Form Designer generated code " Public Sub New() MyBase.New() 'This call is required by the Windows Form Designer. InitializeComponent() 'Add any initialization after the InitializeComponent() call End Sub 'Form overrides dispose to clean up the component list. Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean) If disposing Then If Not (components Is Nothing) Then components.Dispose() End If End If MyBase.Dispose(disposing) End Sub 'Required by the Windows Form Designer Private components As System.ComponentModel.IContainer 'NOTE: The following procedure is required by the Windows Form Designer 'It can be modified using the Windows Form Designer. 'Do not modify it using the code editor. Friend WithEvents Panel2 As System.Windows.Forms.Panel Friend WithEvents Panel1 As System.Windows.Forms.Panel Friend WithEvents Button1 As System.Windows.Forms.Button Friend WithEvents Button2 As System.Windows.Forms.Button Friend WithEvents tbxOutput As System.Windows.Forms.RichTextBox <System.Diagnostics.DebuggerStepThrough()> _ Private Sub InitializeComponent() Me.Panel2 = New System.Windows.Forms.Panel Me.Button1 = New System.Windows.Forms.Button Me.Button2 = New System.Windows.Forms.Button Me.Panel1 = New System.Windows.Forms.Panel Me.tbxOutput = New System.Windows.Forms.RichTextBox Me.Panel2.SuspendLayout() Me.Panel1.SuspendLayout() Me.SuspendLayout() ' 'Panel2 ' Me.Panel2.Controls.Add(Me.Button1) Me.Panel2.Controls.Add(Me.Button2) Me.Panel2.Dock = System.Windows.Forms.DockStyle.Bottom Me.Panel2.Location = New System.Drawing.Point(0, 277) Me.Panel2.Name = "Panel2" Me.Panel2.Padding = New System.Windows.Forms.Padding(20) Me.Panel2.Size = New System.Drawing.Size(513, 56) Me.Panel2.TabIndex = 1 ' 'Button1 ' Me.Button1.Dock = System.Windows.Forms.DockStyle.Right Me.Button1.Font = New System.Drawing.Font( _ "Microsoft Sans Serif", _ 9.0!, _ System.Drawing.FontStyle.Regular, _ System.Drawing.GraphicsUnit.Point, _ CType(0, Byte)) Me.Button1.Location = New System.Drawing.Point(368, 20) Me.Button1.MinimumSize = New System.Drawing.Size(0, 20) Me.Button1.Name = "Button1" Me.Button1.Size = New System.Drawing.Size(62, 20) Me.Button1.TabIndex = 2 Me.Button1.Text = "&Run" ' 'Button2 ' Me.Button2.Dock = System.Windows.Forms.DockStyle.Right Me.Button2.Font = New System.Drawing.Font( _ "Microsoft Sans Serif", _ 9.0!, _ System.Drawing.FontStyle.Regular, _ System.Drawing.GraphicsUnit.Point, _ CType(0, Byte)) Me.Button2.Location = New System.Drawing.Point(430, 20) Me.Button2.MinimumSize = New System.Drawing.Size(0, 20) Me.Button2.Name = "Button2" Me.Button2.Size = New System.Drawing.Size(63, 20) Me.Button2.TabIndex = 3 Me.Button2.Text = "E&xit" ' 'Panel1 ' Me.Panel1.Controls.Add(Me.tbxOutput) Me.Panel1.Dock = System.Windows.Forms.DockStyle.Fill Me.Panel1.Location = New System.Drawing.Point(0, 0) Me.Panel1.Name = "Panel1" Me.Panel1.Padding = New System.Windows.Forms.Padding(20) Me.Panel1.Size = New System.Drawing.Size(513, 277) Me.Panel1.TabIndex = 2 ' 'tbxOutput ' Me.tbxOutput.AccessibleDescription = _ "Displays output from application." Me.tbxOutput.AccessibleName = "Output textbox." Me.tbxOutput.Dock = System.Windows.Forms.DockStyle.Fill Me.tbxOutput.Location = New System.Drawing.Point(20, 20) Me.tbxOutput.Name = "tbxOutput" Me.tbxOutput.Size = New System.Drawing.Size(473, 237) Me.tbxOutput.TabIndex = 1 Me.tbxOutput.Text = "Click the Run button to run the application." ' 'Form1 ' Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13) Me.ClientSize = New System.Drawing.Size(513, 333) Me.Controls.Add(Me.Panel1) Me.Controls.Add(Me.Panel2) Me.Name = "Form1" Me.Text = "DataProtectionPermission" Me.Panel2.ResumeLayout(False) Me.Panel1.ResumeLayout(False) Me.ResumeLayout(False) End Sub #End Region End Class
using System; using System.Security.Permissions; using System.Security.Cryptography; using System.Security; using System.IO; [assembly: DataProtectionPermission( SecurityAction.RequestMinimum, Flags = DataProtectionPermissionFlags.ProtectData)] public class DataProtect { // Create a byte array for additional entropy when using the // Protect and Unprotect methods. static byte[] s_aditionalEntropy = { 9, 8, 7, 6, 5 }; private static byte[] encryptedSecret; private static byte[] originalData; public static void Main(string[] args) { Console.WriteLine("Creating a permission with the Flags property =" + " ProtectData."); DataProtectionPermission sp = new DataProtectionPermission( DataProtectionPermissionFlags.ProtectData); // Deny the permission to protect data. sp.Deny(); // The following code results in an exception due to an attempt to // protect data. ProtectData(); // Remove the Deny for ProtectData permission. CodeAccessPermission.RevertDeny(); // The call to protect data will now succeed. ProtectData(); DataProtectionPermission sp2 = new DataProtectionPermission( DataProtectionPermissionFlags.UnprotectData); sp2.Deny(); // The following code results in an exception due to an attempt // to unprotect data. UnprotectData(); // Remove the Deny for UnprotectData permission. CodeAccessPermission.RevertDeny(); UnprotectData(); // Demonstrate the attribute. TryProtectData(); // Demonstrate the behavior of the class members. ShowMembers(); Console.WriteLine("Press the Enter key to exit."); Console.ReadKey(); return; } //Deny the permission the ability to add to a store. [DataProtectionPermission( SecurityAction.Deny, Flags = DataProtectionPermissionFlags.ProtectData)] private static void TryProtectData() { try { ProtectData(); return; } catch (SecurityException e) { Console.WriteLine("A security exception thrown when attempting:" + ((DataProtectionPermission)e.DenySetInstance).Flags); return; } } // The following method is intended to demonstrate only the behavior of // DataProtectionPermission class members,and not their practical usage. // Most properties and methods in this class are used for the resolution // and enforcement of security policy by the security infrastructure code. private static void ShowMembers() { Console.WriteLine("Creating four DataProtectionPermissions"); Console.WriteLine("Creating the first permission with the Flags " + "property = ProtectData."); DataProtectionPermission sp1 = new DataProtectionPermission( DataProtectionPermissionFlags.ProtectData); Console.WriteLine("Creating the second permission with the Flags " + "property = AllFlags."); DataProtectionPermission sp2 = new DataProtectionPermission( DataProtectionPermissionFlags.AllFlags); Console.WriteLine("Creating the third permission with a permission " + "state = Unrestricted."); DataProtectionPermission sp3 = new DataProtectionPermission( PermissionState.Unrestricted); Console.WriteLine("Creating the fourth permission with a permission" + " state = None."); DataProtectionPermission sp4 = new DataProtectionPermission( PermissionState.None); bool rc = sp2.IsSubsetOf(sp3); Console.WriteLine("Is the permission with all flags set (AllFlags) " + "a subset of \n \tthe permission with an Unrestricted " + "permission state? " + (rc ? "Yes" : "No")); rc = sp1.IsSubsetOf(sp2); Console.WriteLine("Is the permission with ProtectData access a " + "subset of the permission with \n" + "\tAllFlags set? " + (rc ? "Yes" : "No")); rc = sp3.IsUnrestricted(); Console.WriteLine("Is the third permission unrestricted? " + (rc ? "Yes" : "No")); Console.WriteLine("Copying the second permission to the fourth " + "permission."); sp4 = (DataProtectionPermission)sp2.Copy(); rc = sp4.Equals(sp2); Console.WriteLine("Is the fourth permission equal to the second " + "permission? " + (rc ? "Yes" : "No")); Console.WriteLine("Creating the intersection of the second and " + "first permissions."); sp4 = (DataProtectionPermission)sp2.Intersect(sp1); Console.WriteLine("The value of the Flags property is: " + sp4.Flags.ToString()); Console.WriteLine("Creating the union of the second and first " + "permissions."); sp4 = (DataProtectionPermission)sp2.Union(sp1); Console.WriteLine("Result of the union of the second permission " + "with the first: " + sp4.Flags); Console.WriteLine("Using an XML round trip to reset the fourth " + "permission."); sp4.FromXml(sp2.ToXml()); rc = sp4.Equals(sp2); Console.WriteLine("Does the XML round trip result equal the " + "original permission? " + (rc ? "Yes" : "No")); } // Create a simple byte array containing data to be encrypted. public static void ProtectData() { byte[] secret = { 0, 1, 2, 3, 4, 1, 2, 3, 4 }; //Encrypt the data. encryptedSecret = Protect(secret); Console.WriteLine("The encrypted byte array is:"); if (encryptedSecret != null) PrintValues(encryptedSecret); } // Decrypt the data and store in a byte array. public static void UnprotectData() { originalData = Unprotect(encryptedSecret); if (originalData != null) { Console.WriteLine("\r\nThe original data is:"); PrintValues(originalData); } } // Encrypt data in the specified byte array. public static byte[] Protect(byte[] data) { try { // Encrypt the data using DataProtectionScope.CurrentUser. // The result can be decrypted only by the user who encrypted // the data. return ProtectedData.Protect( data, s_aditionalEntropy, DataProtectionScope.CurrentUser); } catch (CryptographicException e) { Console.WriteLine("Data was not encrypted. " + "An error has occurred."); Console.WriteLine(e.ToString()); return null; } catch (SecurityException e) { Console.WriteLine("Insufficient permissions. " + "An error has occurred."); Console.WriteLine(e.ToString()); return null; } } // Decrypt data in the specified byte array. public static byte[] Unprotect(byte[] data) { try { //Decrypt the data using DataProtectionScope.CurrentUser. return ProtectedData.Unprotect( data, s_aditionalEntropy, DataProtectionScope.CurrentUser); } catch (CryptographicException e) { Console.WriteLine("Data was not decrypted. " + "An error has occurred."); Console.WriteLine(e.ToString()); return null; } catch (SecurityException e) { Console.WriteLine("Insufficient permissions. " + "An error has occurred."); Console.WriteLine(e.ToString()); return null; } } public static void PrintValues(Byte[] myArr) { foreach (Byte i in myArr) { Console.Write("\t{0}", i); } Console.WriteLine(); } }
import System.*; import System.Security.Permissions.*; import System.Security.Cryptography.*; import System.Security.*; import System.IO.*; /** @assembly DataProtectionPermission(SecurityAction.RequestMinimum, Flags = DataProtectionPermissionFlags.ProtectData) */ public class DataProtect { // Create a byte array for additional entropy when using the // Protect and Unprotect methods. private static ubyte s_aditionalEntropy[] = { 9, 8, 7, 6, 5 }; private static ubyte encryptedSecret[]; private static ubyte originalData[]; public static void main(String[] args) { Console.WriteLine("Creating a permission with the Flags property =" + " ProtectData."); DataProtectionPermission sp = new DataProtectionPermission( DataProtectionPermissionFlags.ProtectData); // Deny the permission to protect data. sp.Deny(); // The following code results in an exception due to an attempt to // protect data. ProtectData(); // Remove the Deny for ProtectData permission. CodeAccessPermission.RevertDeny(); // The call to protect data will now succeed. ProtectData(); DataProtectionPermission sp2 = new DataProtectionPermission( DataProtectionPermissionFlags.UnprotectData); sp2.Deny(); // The following code results in an exception due to an attempt // to unprotect data. UnprotectData(); // Remove the Deny for UnprotectData permission. CodeAccessPermission.RevertDeny(); UnprotectData(); // Demonstrate the attribute. TryProtectData(); // Demonstrate the behavior of the class members. ShowMembers(); Console.WriteLine("Press the Enter key to exit."); Console.ReadKey(); return; } //main //Deny the permission the ability to add to a store. /** @attribute DataProtectionPermission(SecurityAction.Deny, Flags = DataProtectionPermissionFlags.ProtectData) */ private static void TryProtectData() { try { ProtectData(); return; } catch (System.Security.SecurityException e) { Console.WriteLine("A security exception thrown when attempting:" + ((DataProtectionPermission)(e.get_DenySetInstance())). get_Flags()); return; } } //TryProtectData // The following method is intended to demonstrate only the behavior of // DataProtectionPermission class members,and not their practical usage. // Most properties and methods in this class are used for the resolution // and enforcement of security policy by the security infrastructure code. private static void ShowMembers() { Console.WriteLine("Creating four DataProtectionPermissions"); Console.WriteLine("Creating the first permission with the Flags " + "property = ProtectData."); DataProtectionPermission sp1 = new DataProtectionPermission( DataProtectionPermissionFlags.ProtectData); Console.WriteLine("Creating the second permission with the Flags " + "property = AllFlags."); DataProtectionPermission sp2 = new DataProtectionPermission( DataProtectionPermissionFlags.AllFlags); Console.WriteLine("Creating the third permission with a permission " + "state = Unrestricted."); DataProtectionPermission sp3 = new DataProtectionPermission( PermissionState.Unrestricted); Console.WriteLine("Creating the fourth permission with a permission" + " state = None."); DataProtectionPermission sp4 = new DataProtectionPermission( PermissionState.None); boolean rc = sp2.IsSubsetOf(sp3); Console.WriteLine("Is the permission with all flags set (AllFlags) " + "a subset of \n \tthe permission with an Unrestricted " + "permission state? " + ((rc) ? "Yes" : "No")); rc = sp1.IsSubsetOf(sp2); Console.WriteLine("Is the permission with ProtectData access a " + "subset of the permission with \n" + "\tAllFlags set? " + ((rc) ? "Yes" : "No")); rc = sp3.IsUnrestricted(); Console.WriteLine("Is the third permission unrestricted? " + ((rc) ? "Yes" : "No")); Console.WriteLine("Copying the second permission to the fourth " + "permission."); sp4 = (DataProtectionPermission)(sp2.Copy()); rc = sp4.Equals(sp2); Console.WriteLine("Is the fourth permission equal to the second " + "permission? " + ((rc) ? "Yes" : "No")); Console.WriteLine("Creating the intersection of the second and " + "first permissions."); sp4 = (DataProtectionPermission)(sp2.Intersect(sp1)); Console.WriteLine("The value of the Flags property is: " + sp4.get_Flags().ToString()); Console.WriteLine("Creating the union of the second and first " + "permissions."); sp4 = (DataProtectionPermission)(sp2.Union(sp1)); Console.WriteLine("Result of the union of the second permission " + "with the first: " + sp4.get_Flags()); Console.WriteLine("Using an XML round trip to reset the fourth " + "permission."); sp4.FromXml(sp2.ToXml()); rc = sp4.Equals(sp2); Console.WriteLine("Does the XML round trip result equal the " + "original permission? " + ((rc) ? "Yes" : "No")); } //ShowMembers // Create a simple byte array containing data to be encrypted. public static void ProtectData() { ubyte secret[] = { 0, 1, 2, 3, 4, 1, 2, 3, 4 }; //Encrypt the data. encryptedSecret = Protect(secret); Console.WriteLine("The encrypted byte array is:"); if (encryptedSecret != null) { PrintValues(encryptedSecret); } } //ProtectData // Decrypt the data and store in a byte array. public static void UnprotectData() { originalData = Unprotect(encryptedSecret); if (originalData != null) { Console.WriteLine("\r\nThe original data is:"); PrintValues(originalData); } } //UnprotectData // Encrypt data in the specified byte array. public static ubyte[] Protect(ubyte data[]) { try { // Encrypt the data using DataProtectionScope.CurrentUser. // The result can be decrypted only by the user who encrypted // the data. return ProtectedData.Protect(data, s_aditionalEntropy , DataProtectionScope.CurrentUser); } catch (CryptographicException e) { Console.WriteLine("Data was not encrypted. " + "An error has occurred."); Console.WriteLine(e.ToString()); return null; } catch (System.Security.SecurityException e) { Console.WriteLine("Insufficient permissions. " + "An error has occurred."); Console.WriteLine(e.ToString()); return null; } } //Protect // Decrypt data in the specified byte array. public static ubyte[] Unprotect(ubyte data[]) { try { //Decrypt the data using DataProtectionScope.CurrentUser. return ProtectedData.Unprotect(data, s_aditionalEntropy , DataProtectionScope.CurrentUser); } catch (CryptographicException e) { Console.WriteLine("Data was not decrypted. " + "An error has occurred."); Console.WriteLine(e.ToString()); return null; } catch (System.Security.SecurityException e) { Console.WriteLine("Insufficient permissions. " + "An error has occurred."); Console.WriteLine(e.ToString()); return null; } } //Unprotect public static void PrintValues(ubyte myArr[]) { for (int iCtr = 0; iCtr < myArr.get_Length(); iCtr++) { ubyte i = myArr[iCtr]; Console.Write("\t{0}", System.Convert.ToString(i)); } Console.WriteLine(); } //PrintValues } //DataProtect

System.Security.CodeAccessPermission
System.Security.Permissions.DataProtectionPermission


Windows 98, Windows 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
開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。


DataProtectionPermission コンストラクタ (DataProtectionPermissionFlags)
アセンブリ: System.Security (system.security.dll 内)



DataProtectionPermission(DataProtectionPermissionFlags) コンストラクタを使用するコード例を次に示します。このコード例は、DataProtectionPermission クラスのトピックで取り上げているコード例の一部分です。
Write("Creating a permission with the Flags property = ") WriteLine("ProtectData.") Dim sp As New DataProtectionPermission( _ DataProtectionPermissionFlags.ProtectData)
Console.WriteLine("Creating a permission with the Flags property =" + " ProtectData."); DataProtectionPermission sp = new DataProtectionPermission( DataProtectionPermissionFlags.ProtectData);

Windows 98, Windows 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
開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。


DataProtectionPermission コンストラクタ (PermissionState)
アセンブリ: System.Security (system.security.dll 内)




DataProtectionPermission(PermissionState) コンストラクタを使用するコード例を次に示します。このコード例は、DataProtectionPermission クラスのトピックで取り上げているコード例の一部分です。

Windows 98, Windows 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
開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。


DataProtectionPermission コンストラクタ

名前 | 説明 |
---|---|
DataProtectionPermission (DataProtectionPermissionFlags) | アクセス許可フラグを指定して、DataProtectionPermission クラスの新しいインスタンスを初期化します。 |
DataProtectionPermission (PermissionState) | アクセス許可の状態を指定して、DataProtectionPermission クラスの新しいインスタンスを初期化します。 |

DataProtectionPermission プロパティ
DataProtectionPermission メソッド


名前 | 説明 | |
---|---|---|
![]() | Finalize | Object がガベージ コレクションにより収集される前に、その Object がリソースを解放し、その他のクリーンアップ操作を実行できるようにします。 ( Object から継承されます。) |
![]() | MemberwiseClone | 現在の Object の簡易コピーを作成します。 ( Object から継承されます。) |

DataProtectionPermission メンバ
暗号化されたデータとメモリにアクセスする権利を制御します。このクラスは継承できません。
DataProtectionPermission データ型で公開されるメンバを以下の表に示します。




名前 | 説明 | |
---|---|---|
![]() | Finalize | Object がガベージ コレクションにより収集される前に、その Object がリソースを解放し、その他のクリーンアップ操作を実行できるようにします。 (Object から継承されます。) |
![]() | MemberwiseClone | 現在の Object の簡易コピーを作成します。 (Object から継承されます。) |

- DataProtectionPermissionのページへのリンク