def random_data(self, bytes):
current_time = maybe_monotonic_time()
if self.last_reseed is not None and self.last_reseed > current_time:
warnings.warn('Clock rewind detected. Resetting last_reseed.',
ClockRewindWarning)
self.last_reseed = None
if self.pools[0].length >= self.min_pool_size and (
self.last_reseed is None
or current_time > self.last_reseed + self.reseed_interval):
self._reseed(current_time)
return self.generator.pseudo_random_data(bytes)
def random_data(self, bytes):
current_time = maybe_monotonic_time()
if (self.last_reseed is not None and self.last_reseed > current_time): # Avoid float comparison to None to make Py3k happy
warnings.warn("Clock rewind detected. Resetting last_reseed.", ClockRewindWarning)
self.last_reseed = None
if (self.pools[0].length >= self.min_pool_size and
(self.last_reseed is None or
current_time > self.last_reseed + self.reseed_interval)):
self._reseed(current_time)
# The following should fail if we haven't seeded the pool yet.
return self.generator.pseudo_random_data(bytes)
def random_data(self, bytes):
current_time = maybe_monotonic_time()
if (self.last_reseed is not None and self.last_reseed > current_time): # Avoid float comparison to None to make Py3k happy
warnings.warn("Clock rewind detected. Resetting last_reseed.", ClockRewindWarning)
self.last_reseed = None
if (self.pools[0].length >= self.min_pool_size and
(self.last_reseed is None or
current_time > self.last_reseed + self.reseed_interval)):
self._reseed(current_time)
# The following should fail if we haven't seeded the pool yet.
return self.generator.pseudo_random_data(bytes)
def _reseed(self, current_time=None):
if current_time is None:
current_time = maybe_monotonic_time()
seed = []
self.reseed_count += 1
self.last_reseed = current_time
for i in which_pools(self.reseed_count):
seed.append(self.pools[i].digest())
self.pools[i].reset()
seed = b("").join(seed)
self.generator.reseed(seed)
def _reseed(self, current_time=None):
if current_time is None:
current_time = maybe_monotonic_time()
seed = []
self.reseed_count += 1
self.last_reseed = current_time
for i in which_pools(self.reseed_count):
seed.append(self.pools[i].digest())
self.pools[i].reset()
seed = b("").join(seed)
self.generator.reseed(seed)