| # | |
| # 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: | |