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authorxiubuzhe <xiubuzhe@sina.com>2023-10-08 20:59:00 +0800
committerxiubuzhe <xiubuzhe@sina.com>2023-10-08 20:59:00 +0800
commit1dac2263372df2b85db5d029a45721fa158a5c9d (patch)
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+# -*- 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
+