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/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsISupports.idl"

/**
 * Interface used to generate random data.
 *
 * @threadsafe
 */
[scriptable, uuid(2362d97a-747a-4576-8863-697667309209)]
interface nsIRandomGenerator : nsISupports {
  /**
   * Generates the specified amount of random bytes.
   *
   * @param aLength
   *        The length of the data to generate.
   * @param aBuffer
   *        A buffer that contains random bytes of size aLength.
   */
  void generateRandomBytes(in unsigned long aLength,
                           [retval, array, size_is(aLength)] out octet aBuffer);
};