CryptographicBuffer.GenerateRandom(UInt32) Méthode

Définition

Espace de noms:

Windows.Security.Cryptography

Crée une mémoire tampon qui contient des données aléatoires.

public:
 static IBuffer ^ GenerateRandom(unsigned int length);

 static IBuffer GenerateRandom(uint32_t const& length);

public static IBuffer GenerateRandom(uint length);

function generateRandom(length)

Public Shared Function GenerateRandom (length As UInteger) As IBuffer

Paramètres

length

UInt32

unsigned int

uint32_t

Longueur, en octets, de la mémoire tampon à créer.

Retours

IBuffer

Mémoire tampon de sortie qui contient les données aléatoires.

Exemples

using Windows.Security.Cryptography;
using Windows.Storage.Streams;

namespace Random
{
    sealed partial class GenerateRandomDataApp : Application
    {
        public GenerateRandomDataApp()
        {
            // Initialize the application.
            this.InitializeComponent();

            // Create a buffer that contains random data.
            String strRndHex = this.GenerateRndData();

            // Create a random integer.
            UInt32 uRnd = this.GenerateRndNumber();
        }

        public String GenerateRndData()
        {
            // Define the length, in bytes, of the buffer.
            UInt32 length = 32;

            // Generate random data and copy it to a buffer.
            IBuffer buffer = CryptographicBuffer.GenerateRandom(length);

            // Encode the buffer to a hexadecimal string (for display).
            String hexRnd = CryptographicBuffer.EncodeToHexString(buffer);

            return hexRnd;
        }

        public UInt32 GenerateRndNumber()
        {
            // Generate a random number.
            UInt32 Rnd = CryptographicBuffer.GenerateRandomNumber();

            return Rnd;
        }
    }
}