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| 1 # -*- coding: utf-8 -*- |
| 2 # |
| 3 # Random/__init__.py : PyCrypto random number generation |
| 4 # |
| 5 # Written in 2008 by Dwayne C. Litzenberger <dlitz@dlitz.net> |
| 6 # |
| 7 # =================================================================== |
| 8 # The contents of this file are dedicated to the public domain. To |
| 9 # the extent that dedication to the public domain is not available, |
| 10 # everyone is granted a worldwide, perpetual, royalty-free, |
| 11 # non-exclusive license to exercise all rights associated with the |
| 12 # contents of this file for any purpose whatsoever. |
| 13 # No rights are reserved. |
| 14 # |
| 15 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 16 # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 17 # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 18 # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 19 # BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 20 # ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 21 # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 22 # SOFTWARE. |
| 23 # =================================================================== |
| 24 |
| 25 __revision__ = "$Id$" |
| 26 __all__ = ['new'] |
| 27 |
| 28 from Crypto.Random import OSRNG |
| 29 from Crypto.Random import _UserFriendlyRNG |
| 30 |
| 31 def new(*args, **kwargs): |
| 32 """Return a file-like object that outputs cryptographically random bytes.""" |
| 33 return _UserFriendlyRNG.new(*args, **kwargs) |
| 34 |
| 35 def atfork(): |
| 36 """Call this whenever you call os.fork()""" |
| 37 _UserFriendlyRNG.reinit() |
| 38 |
| 39 def get_random_bytes(n): |
| 40 """Return the specified number of cryptographically-strong random bytes.""" |
| 41 return _UserFriendlyRNG.get_random_bytes(n) |
| 42 |
| 43 # vim:set ts=4 sw=4 sts=4 expandtab: |
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