Imported Upstream version 1.7.7.1upstream/1.7.7.1

1 files changed, 0 insertions, 112 deletions

diff --git a/paramiko/rng.py b/paramiko/rng.py
deleted file mode 100644
index 46329d1..0000000
--- a/paramiko/rng.py
+++ /dev/null
@@ -1,112 +0,0 @@
-#!/usr/bin/python
-# -*- coding: ascii -*-
-# Copyright (C) 2008  Dwayne C. Litzenberger <dlitz@dlitz.net>
-#
-# This file is part of paramiko.
-#
-# Paramiko is free software; you can redistribute it and/or modify it under the
-# terms of the GNU Lesser General Public License as published by the Free
-# Software Foundation; either version 2.1 of the License, or (at your option)
-# any later version.
-#
-# Paramiko is distrubuted in the hope that it will be useful, but WITHOUT ANY
-# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
-# A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
-# details.
-#
-# You should have received a copy of the GNU Lesser General Public License
-# along with Paramiko; if not, write to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
-import sys
-import threading
-from Crypto.Util.randpool import RandomPool as _RandomPool
-
-try:
-    import platform
-except ImportError:
-    platform = None     # Not available using Python 2.2
-
-def _strxor(a, b):
-    assert len(a) == len(b)
-    return "".join(map(lambda x, y: chr(ord(x) ^ ord(y)), a, b))
-
-##
-## Find a strong random entropy source, depending on the detected platform.
-## WARNING TO DEVELOPERS: This will fail on some systems, but do NOT use
-## Crypto.Util.randpool.RandomPool as a fall-back.  RandomPool will happily run
-## with very little entropy, thus _silently_ defeating any security that
-## Paramiko attempts to provide.  (This is current as of PyCrypto 2.0.1).
-## See http://www.lag.net/pipermail/paramiko/2008-January/000599.html
-## and http://www.lag.net/pipermail/paramiko/2008-April/000678.html
-##
-
-if ((platform is not None and platform.system().lower() == 'windows') or
-        sys.platform == 'win32'):
-    # MS Windows
-    from paramiko import rng_win32
-    rng_device = rng_win32.open_rng_device()
-else:
-    # Assume POSIX (any system where /dev/urandom exists)
-    from paramiko import rng_posix
-    rng_device = rng_posix.open_rng_device()
-
-
-class StrongLockingRandomPool(object):
-    """Wrapper around RandomPool guaranteeing strong random numbers.
-    
-    Crypto.Util.randpool.RandomPool will silently operate even if it is seeded
-    with little or no entropy, and it provides no prediction resistance if its
-    state is ever compromised throughout its runtime.  It is also not thread-safe.
-
-    This wrapper augments RandomPool by XORing its output with random bits from
-    the operating system, and by controlling access to the underlying
-    RandomPool using an exclusive lock.
-    """
-
-    def __init__(self, instance=None):
-        if instance is None:
-            instance = _RandomPool()
-        self.randpool = instance
-        self.randpool_lock = threading.Lock()
-        self.entropy = rng_device
-
-        # Stir 256 bits of entropy from the RNG device into the RandomPool.
-        self.randpool.stir(self.entropy.read(32))
-        self.entropy.randomize()
-
-    def stir(self, s=''):
-        self.randpool_lock.acquire()
-        try:
-            self.randpool.stir(s)
-        finally:
-            self.randpool_lock.release()
-        self.entropy.randomize()
-
-    def randomize(self, N=0):
-        self.randpool_lock.acquire()
-        try:
-            self.randpool.randomize(N)
-        finally:
-            self.randpool_lock.release()
-        self.entropy.randomize()
-
-    def add_event(self, s=''):
-        self.randpool_lock.acquire()
-        try:
-            self.randpool.add_event(s)
-        finally:
-            self.randpool_lock.release()
-
-    def get_bytes(self, N):
-        self.randpool_lock.acquire()
-        try:
-            randpool_data = self.randpool.get_bytes(N)
-        finally:
-            self.randpool_lock.release()
-        entropy_data = self.entropy.read(N)
-        result = _strxor(randpool_data, entropy_data)
-        assert len(randpool_data) == N and len(entropy_data) == N and len(result) == N
-        return result
-
-# vim:set ts=4 sw=4 sts=4 expandtab: