ProtectedData.Protect Methode

Quelle:

ProtectedData.cs

Quelle:

ProtectedData.cs

Quelle:

ProtectedData.cs

Quelle:

ProtectedData.cs

Quelle:

ProtectedData.cs

Quelle:

ProtectedData.cs

Quelle:

ProtectedData.cs

public:
 static cli::array <System::Byte> ^ Protect(cli::array <System::Byte> ^ userData, cli::array <System::Byte> ^ optionalEntropy, System::Security::Cryptography::DataProtectionScope scope);

public static byte[] Protect(byte[] userData, byte[]? optionalEntropy, System.Security.Cryptography.DataProtectionScope scope);

public static byte[] Protect(byte[] userData, byte[] optionalEntropy, System.Security.Cryptography.DataProtectionScope scope);

static member Protect : byte[] * byte[] * System.Security.Cryptography.DataProtectionScope -> byte[]

Public Shared Function Protect (userData As Byte(), optionalEntropy As Byte(), scope As DataProtectionScope) As Byte()

Parameter

Gibt zurück

Ein Bytearray, das die verschlüsselten Daten darstellt.

Ausnahmen

Beispiele

Das folgende Beispiel zeigt, wie Der Datenschutz verwendet wird.

using System;
using System.Security.Cryptography;

public class DataProtectionSample
{
    // Create byte array for additional entropy when using Protect method.
    static byte [] s_additionalEntropy = { 9, 8, 7, 6, 5 };

    public static void Main()
    {
        // Create a simple byte array containing data to be encrypted.
        byte [] secret = { 0, 1, 2, 3, 4, 1, 2, 3, 4 };

        //Encrypt the data.
        byte [] encryptedSecret = Protect( secret );
        Console.WriteLine("The encrypted byte array is:");
        PrintValues(encryptedSecret);

        // Decrypt the data and store in a byte array.
        byte [] originalData = Unprotect( encryptedSecret );
        Console.WriteLine("{0}The original data is:", Environment.NewLine);
        PrintValues(originalData);
    }

    public static byte [] Protect( byte [] data )
    {
        try
        {
            // Encrypt the data using DataProtectionScope.CurrentUser. The result can be decrypted
            // only by the same current user.
            return ProtectedData.Protect( data, s_additionalEntropy, DataProtectionScope.CurrentUser );
        }
        catch (CryptographicException e)
        {
            Console.WriteLine("Data was not encrypted. An error occurred.");
            Console.WriteLine(e.ToString());
            return null;
        }
    }

    public static byte [] Unprotect( byte [] data )
    {
        try
        {
            //Decrypt the data using DataProtectionScope.CurrentUser.
            return ProtectedData.Unprotect( data, s_additionalEntropy, DataProtectionScope.CurrentUser );
        }
        catch (CryptographicException e)
        {
            Console.WriteLine("Data was not decrypted. An error 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();
    }
}

Imports System.Security.Cryptography



Public Class DataProtectionSample
    ' Create byte array for additional entropy when using Protect method.
    Private Shared s_additionalEntropy As Byte() = {9, 8, 7, 6, 5}


    Public Shared Sub Main()
        ' Create a simple byte array containing data to be encrypted.
        Dim secret As Byte() = {0, 1, 2, 3, 4, 1, 2, 3, 4}

        'Encrypt the data.
        Dim encryptedSecret As Byte() = Protect(secret)
        Console.WriteLine("The encrypted byte array is:")
        PrintValues(encryptedSecret)

        ' Decrypt the data and store in a byte array.
        Dim originalData As Byte() = Unprotect(encryptedSecret)
        Console.WriteLine("{0}The original data is:", Environment.NewLine)
        PrintValues(originalData)

    End Sub


    Public Shared Function Protect(ByVal data() As Byte) As Byte()
        Try
            ' Encrypt the data using DataProtectionScope.CurrentUser. The result can be decrypted
            '  only by the same current user.
            Return ProtectedData.Protect(data, s_additionalEntropy, DataProtectionScope.CurrentUser)
        Catch e As CryptographicException
            Console.WriteLine("Data was not encrypted. An error occurred.")
            Console.WriteLine(e.ToString())
            Return Nothing
        End Try

    End Function


    Public Shared Function Unprotect(ByVal data() As Byte) As Byte()
        Try
            'Decrypt the data using DataProtectionScope.CurrentUser.
            Return ProtectedData.Unprotect(data, s_additionalEntropy, DataProtectionScope.CurrentUser)
        Catch e As CryptographicException
            Console.WriteLine("Data was not decrypted. An error occurred.")
            Console.WriteLine(e.ToString())
            Return Nothing
        End Try

    End Function


    Public Shared Sub PrintValues(ByVal myArr() As [Byte])
        Dim i As [Byte]
        For Each i In myArr
            Console.Write(vbTab + "{0}", i)
        Next i
        Console.WriteLine()

    End Sub
End Class

Hinweise

Diese Methode kann zum Verschlüsseln von Daten wie Kennwörtern, Schlüsseln oder Verbindungszeichenfolgen verwendet werden. Mit dem optionalEntropy Parameter können Sie Daten hinzufügen, um die Komplexität der Verschlüsselung zu erhöhen. Geben Sie null für keine zusätzliche Komplexität an. Wenn angegeben, müssen diese Informationen auch beim Entschlüsseln der Daten mithilfe der Unprotect Methode verwendet werden.

Quelle:

ProtectedData.cs

Quelle:

ProtectedData.cs

Quelle:

ProtectedData.cs

public static byte[] Protect(ReadOnlySpan<byte> userData, System.Security.Cryptography.DataProtectionScope scope, ReadOnlySpan<byte> optionalEntropy = default);

static member Protect : ReadOnlySpan<byte> * System.Security.Cryptography.DataProtectionScope * ReadOnlySpan<byte> -> byte[]

Public Shared Function Protect (userData As ReadOnlySpan(Of Byte), scope As DataProtectionScope, Optional optionalEntropy As ReadOnlySpan(Of Byte) = Nothing) As Byte()

Parameter

Gibt zurück

Ein Bytearray, das die verschlüsselten Daten darstellt.

Ausnahmen

Quelle:

ProtectedData.cs

Quelle:

ProtectedData.cs

Quelle:

ProtectedData.cs

public static int Protect(ReadOnlySpan<byte> userData, System.Security.Cryptography.DataProtectionScope scope, Span<byte> destination, ReadOnlySpan<byte> optionalEntropy = default);

static member Protect : ReadOnlySpan<byte> * System.Security.Cryptography.DataProtectionScope * Span<byte> * ReadOnlySpan<byte> -> int

Public Shared Function Protect (userData As ReadOnlySpan(Of Byte), scope As DataProtectionScope, destination As Span(Of Byte), Optional optionalEntropy As ReadOnlySpan(Of Byte) = Nothing) As Integer

Parameter

Gibt zurück

Die Gesamtzahl der Bytes, die in destination

Ausnahmen