ProtectedData.Unprotect Metoda

Źródło:

ProtectedData.cs

Źródło:

ProtectedData.cs

Źródło:

ProtectedData.cs

Źródło:

ProtectedData.cs

Źródło:

ProtectedData.cs

Źródło:

ProtectedData.cs

Źródło:

ProtectedData.cs

Źródło:

ProtectedData.cs

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

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

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

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

Public Shared Function Unprotect (encryptedData As Byte(), optionalEntropy As Byte(), scope As DataProtectionScope) As Byte()

Parametry

Zwraca

Tablica bajtów reprezentująca odszyfrowane dane.

Wyjątki

Przykłady

W poniższym przykładzie kodu pokazano, jak używać ochrony danych.

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

Uwagi

Tej metody można użyć do usunięcia ochrony danych, które zostały zaszyfrowane przy użyciu Protect metody . optionalEntropy Jeśli parametr został użyty podczas szyfrowania, należy go podać, aby odszyfrować dane.

Źródło:

ProtectedData.cs

Źródło:

ProtectedData.cs

Źródło:

ProtectedData.cs

Źródło:

ProtectedData.cs

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

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

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

Parametry

Zwraca

Tablica bajtów reprezentująca zaszyfrowane dane.

Wyjątki

Źródło:

ProtectedData.cs

Źródło:

ProtectedData.cs

Źródło:

ProtectedData.cs

Źródło:

ProtectedData.cs

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

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

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

Parametry

Zwraca

Całkowita liczba bajtów zapisanych w destination

Wyjątki