t.p.r.RandomFactory(object) : class documentation

Part of twisted.python.randbytes View Source View In Hierarchy

Factory providing secureRandom and insecureRandom methods.

You shouldn't have to instantiate this class, use the module level functions instead: it is an implementation detail and could be removed or changed arbitrarily.

Instance Variables	randomPool	pool of random data. (type: `randpool.RandomPool` )
Class Variables	randomSources	list of file sources used when os.urandom is not available. (type: `tuple` )

Method	secureRandom	Return a number of secure random bytes.
Method	insecureRandom	Return a number of non secure random bytes.
Method	_osUrandom	Wrapper around `os.urandom` that cleanly manage its absence.
Method	_fileUrandom	Wrapper around random file sources.
Method	_cryptoRandom	Wrapper around Crypo random pool.
Method	_randBits	Wrapper around `os.getrandbits`.
Method	_randRange	Wrapper around `random.randrange`.

def _osUrandom(self, nbytes): (source)

Wrapper around os.urandom that cleanly manage its absence.

def _fileUrandom(self, nbytes): (source)

Wrapper around random file sources.

This method isn't meant to be call out of the class and could be removed arbitrarily.

def _cryptoRandom(self, nbytes): (source)

Wrapper around Crypo random pool.

def secureRandom(self, nbytes, fallback=False): (source)

Return a number of secure random bytes.

Parameters	nbytes	number of bytes to generate. (type: `int` )
	fallback	Whether the function should fallback on non-secure random or not. Default to `False`. (type: `bool` )
Returns	a string of random bytes. (type: `str` )

def _randBits(self, nbytes): (source)

Wrapper around os.getrandbits.

def _randRange(self, nbytes): (source)

Wrapper around random.randrange.

def insecureRandom(self, nbytes): (source)

Return a number of non secure random bytes.

Parameters	nbytes	number of bytes to generate. (type: `int` )
Returns	a string of random bytes. (type: `str` )

API Documentation for Twisted, generated by pydoctor at 2010-07-05 15:03:32.