Exists() [3/3]

static bool System.Security.Cryptography.CngKey.Exists ( string keyName, CngProvider provider, CngKeyOpenOptions options )

inlinestatic

Definition at line 771 of file CngKey.cs.

    {
        if (keyName == null)
        {
            throw new ArgumentNullException("keyName");
        }
        if (provider == null)
        {
            throw new ArgumentNullException("provider");
        }
        using SafeNCryptProviderHandle hProvider = provider.OpenStorageProvider();
        SafeNCryptKeyHandle phKey = null;
        try
        {
            global::Interop.NCrypt.ErrorCode errorCode = global::Interop.NCrypt.NCryptOpenKey(hProvider, out phKey, keyName, 0, options);
            return errorCode switch
            {
                global::Interop.NCrypt.ErrorCode.NTE_BAD_KEYSET => false, 
                global::Interop.NCrypt.ErrorCode.ERROR_SUCCESS => true, 
                _ => throw errorCode.ToCryptographicException(), 
            };
        }
        finally
        {
            phKey?.Dispose();
        }
    }

References System.Runtime.InteropServices.SafeHandle.Dispose(), and System.options.