| Server IP : 61.19.30.66 / Your IP : 216.73.216.15 Web Server : Apache/2.2.22 (Ubuntu) System : Linux klw 3.11.0-15-generic #25~precise1-Ubuntu SMP Thu Jan 30 17:39:31 UTC 2014 x86_64 User : www-data ( 33) PHP Version : 5.3.10-1ubuntu3.48 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority, MySQL : ON | cURL : OFF | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : OFF Directory : /usr/lib/python2.7/dist-packages/twisted/python/ |
Upload File : |
ó
[³XMc @ s¯ d Z d d l Z d d l Z d d l Z e e d d ƒ Z d e f d „ ƒ YZ d e f d „ ƒ YZ d e
f d „ ƒ YZ e ƒ Z e j
Z
e j Z [ d
d d g Z d S( sQ
Cryptographically secure random implementation, with fallback on normal random.
iÿÿÿÿNt getrandbitst SecureRandomNotAvailablec B s e Z d Z RS( sD
Exception raised when no secure random algorithm is found.
( t __name__t
__module__t __doc__( ( ( s< /usr/lib/python2.7/dist-packages/twisted/python/randbytes.pyR s t SourceNotAvailablec B s e Z d Z RS( sQ
Internal exception used when a specific random source is not available.
( R R R ( ( ( s< /usr/lib/python2.7/dist-packages/twisted/python/randbytes.pyR s t
RandomFactoryc B sS e Z d Z d Z e Z d „ Z d „ Z e d „ Z d „ Z d „ Z
d „ Z RS( sy
Factory providing L{secureRandom} and L{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.
@cvar randomSources: list of file sources used when os.urandom is not
available.
@type randomSources: C{tuple}
s /dev/urandomc C s= y t j | ƒ SWn% t t f k
r8 } t | ƒ ‚ n Xd S( sO
Wrapper around C{os.urandom} that cleanly manage its absence.
N( t ost urandomt AttributeErrort NotImplementedErrorR ( t selft nbytest e( ( s< /usr/lib/python2.7/dist-packages/twisted/python/randbytes.pyt
_osUrandom- s c C sx x[ | j D]P } y t | d ƒ } Wn t t f k
r< q
X| j | ƒ } | j ƒ | Sq
Wt d | j f ƒ ‚ d S( sœ
Wrapper around random file sources.
This method isn't meant to be call out of the class and could be
removed arbitrarily.
t rbs File sources not available: %sN( t
randomSourcest filet IOErrort OSErrort readt closeR ( R R t srct ft bytes( ( s< /usr/lib/python2.7/dist-packages/twisted/python/randbytes.pyt _fileUrandom7 s
c C sx x9 d D]1 } y t | | ƒ | ƒ SWq t k
r7 q Xq W| rh t j d d t d d ƒ| j | ƒ St d ƒ ‚ d S(
sk
Return a number of secure random bytes.
@param nbytes: number of bytes to generate.
@type nbytes: C{int}
@param fallback: Whether the function should fallback on non-secure
random or not. Default to C{False}.
@type fallback: C{bool}
@return: a string of random bytes.
@rtype: C{str}
R R sP urandom unavailable - proceeding with non-cryptographically secure random sourcet categoryt
stackleveli s! No secure random source availableN( s
_osUrandoms _fileUrandom( t getattrR t warningst warnt RuntimeWarningt insecureRandomR ( R R t fallbackR ( ( s< /usr/lib/python2.7/dist-packages/twisted/python/randbytes.pyt secureRandomK s
c C sQ | j d k rA | j | d ƒ } d | d | } | j d ƒ St d ƒ ‚ d S( s3
Wrapper around C{os.getrandbits}.
i s %%0%dxi t hexs# random.getrandbits is not availableN( R t Nonet decodeR ( R R t nt hexBytes( ( s< /usr/lib/python2.7/dist-packages/twisted/python/randbytes.pyt _randBitsh s
c C s= d } x0 t | ƒ D]" } | t t j d d ƒ ƒ 7} q W| S( s5
Wrapper around C{random.randrange}.
t i iÿ ( t xranget chrt randomt randrange( R R R t i( ( s< /usr/lib/python2.7/dist-packages/twisted/python/randbytes.pyt
_randRanges s c C s@ x9 d D]1 } y t | | ƒ | ƒ SWq t k
r7 q Xq Wd S( sÒ
Return a number of non secure random bytes.
@param nbytes: number of bytes to generate.
@type nbytes: C{int}
@return: a string of random bytes.
@rtype: C{str}
R( R/ N( s _randBitss
_randRange( R R ( R R R ( ( s< /usr/lib/python2.7/dist-packages/twisted/python/randbytes.pyR } s
( s /dev/urandom( R R R R R R R t FalseR" R( R/ R ( ( ( s< /usr/lib/python2.7/dist-packages/twisted/python/randbytes.pyR s
R" R ( R R R R, R R$ R t RuntimeErrorR R t objectR t factoryR" R t __all__( ( ( s< /usr/lib/python2.7/dist-packages/twisted/python/randbytes.pyt <module> s $r