CryptographicEngine.Sign(CryptographicKey, IBuffer) Méthode

public:
 static IBuffer ^ Sign(CryptographicKey ^ key, IBuffer ^ data);

 static IBuffer Sign(CryptographicKey const& key, IBuffer const& data);

public static IBuffer Sign(CryptographicKey key, IBuffer data);

function sign(key, data)

Public Shared Function Sign (key As CryptographicKey, data As IBuffer) As IBuffer

Paramètres

Retours

Signature des données.

Exemples

public IBuffer SampleCreateHMAC(
    String strMsg,
    String strAlgName,
    out IBuffer buffMsg,
    out CryptographicKey hmacKey)
{
    // Create a MacAlgorithmProvider object for the specified algorithm.
    MacAlgorithmProvider objMacProv = MacAlgorithmProvider.OpenAlgorithm(strAlgName);

    // Create a buffer that contains the message to be signed.
    BinaryStringEncoding encoding = BinaryStringEncoding.Utf8;
    buffMsg = CryptographicBuffer.ConvertStringToBinary(strMsg, encoding);

    // Create a key to be signed with the message.
    IBuffer buffKeyMaterial = CryptographicBuffer.GenerateRandom(objMacProv.MacLength);
    hmacKey = objMacProv.CreateKey(buffKeyMaterial);

    // Sign the key and message together.
    IBuffer buffHMAC = CryptographicEngine.Sign(hmacKey, buffMsg);

    // Verify that the HMAC length is correct for the selected algorithm
    if (buffHMAC.Length != objMacProv.MacLength)
    {
        throw new Exception("Error computing digest");
    }

    // Return the HMAC.
    return buffHMAC;
}

Remarques

Si la clé est une clé persistante et que l’opération nécessite une interface utilisateur ou prend beaucoup de temps, utilisez plutôt la méthode SignAsync .

Pour plus d’informations sur la signature de données numériques, consultez MaCs, hachages et signatures.

S’applique à