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SymmetricAlgorithm.LegalBlockSizes Propriété

Définition

Obtient les tailles de bloc, en octets, prises en charge par l'algorithme symétrique.

public:
 virtual property cli::array <System::Security::Cryptography::KeySizes ^> ^ LegalBlockSizes { cli::array <System::Security::Cryptography::KeySizes ^> ^ get(); };
public virtual System.Security.Cryptography.KeySizes[] LegalBlockSizes { get; }
member this.LegalBlockSizes : System.Security.Cryptography.KeySizes[]
Public Overridable ReadOnly Property LegalBlockSizes As KeySizes()

Valeur de propriété

Tableau qui contient les tailles de bloc prises en charge par l'algorithme.

Exemples

L’exemple suivant montre la valeur de LegalBlockSizes pour les algorithmes symétriques.

using System;
using System.Security.Cryptography;
namespace SymmetricAlgo
{
    class Program
    {
        static void Main(string[] args)
        {
            Aes aes = Aes.Create();
            Console.WriteLine("Aes ");
            KeySizes[] ks = aes.LegalKeySizes;
            foreach (KeySizes k in ks)
            {
                Console.WriteLine("\tLegal min key size = " + k.MinSize);
                Console.WriteLine("\tLegal max key size = " + k.MaxSize);
            }
            ks = aes.LegalBlockSizes;
            foreach (KeySizes k in ks)
            {
                Console.WriteLine("\tLegal min block size = " + k.MinSize);
                Console.WriteLine("\tLegal max block size = " + k.MaxSize);
            }
        }
    }
}
//This sample produces the following output:
//Aes
//        Legal min key size = 128
//        Legal max key size = 256
//        Legal min block size = 128
//        Legal max block size = 128
Imports System.Security.Cryptography


Class Program

    Shared Sub Main(ByVal args() As String)
        Dim aes As Aes = Aes.Create()
        Console.WriteLine("Aes ")
        Dim ks As KeySizes() = aes.LegalKeySizes
        Dim k As KeySizes
        For Each k In ks
            Console.WriteLine(vbTab + "Legal min key size = " & k.MinSize)
            Console.WriteLine(vbTab + "Legal max key size = " & k.MaxSize)
        Next k
        ks = aes.LegalBlockSizes

        For Each k In ks
            Console.WriteLine(vbTab + "Legal min block size = " & k.MinSize)
            Console.WriteLine(vbTab + "Legal max block size = " & k.MaxSize)
        Next k


    End Sub
End Class
'This sample produces the following output:
'Aes
'        Legal min key size = 128
'        Legal max key size = 256
'        Legal min block size = 128
'        Legal max block size = 128

Remarques

L’algorithme symétrique prend uniquement en charge les tailles de blocs qui correspondent à une entrée dans ce tableau.

S’applique à

Voir aussi