# -*- coding: utf-8 -*- # # Random/__init__.py : PyCrypto random number generation # # =================================================================== # The contents of this file are dedicated to the public domain. To # the extent that dedication to the public domain is not available, # everyone is granted a worldwide, perpetual, royalty-free, # non-exclusive license to exercise all rights associated with the # contents of this file for any purpose whatsoever. # No rights are reserved. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS # BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN # ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE # SOFTWARE. # =================================================================== __all__ = ['new', 'get_random_bytes'] from os import urandom class _UrandomRNG(object): def read(self, n): """Return a random byte string of the desired size.""" return urandom(n) def flush(self): """Method provided for backward compatibility only.""" pass def reinit(self): """Method provided for backward compatibility only.""" pass def close(self): """Method provided for backward compatibility only.""" pass def new(*args, **kwargs): """Return a file-like object that outputs cryptographically random bytes.""" return _UrandomRNG() def atfork(): pass #: Function that returns a random byte string of the desired size. get_random_bytes = urandom