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- #
- # Random/OSRNG/fallback.py : Fallback entropy source for systems with os.urandom
- #
- # Written in 2008 by Dwayne C. Litzenberger <dlitz@dlitz.net>
- #
- # ===================================================================
- # 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.
- # ===================================================================
- __revision__ = "$Id$"
- __all__ = ['PythonOSURandomRNG']
- import os
- from rng_base import BaseRNG
- class PythonOSURandomRNG(BaseRNG):
- name = "<os.urandom>"
- def __init__(self):
- self._read = os.urandom
- BaseRNG.__init__(self)
- def _close(self):
- self._read = None
- def new(*args, **kwargs):
- return PythonOSURandomRNG(*args, **kwargs)
- # vim:set ts=4 sw=4 sts=4 expandtab:
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