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„ ƒ YZ d S( s $Id$iÿÿÿÿNi i i ( t *( t b2a_hex( t ClockRewindWarningt FortunaPoolc B sD e Z d Z e j Z d „ Z d „ Z d „ Z d „ Z d „ Z RS( sg Fortuna pool type
This object acts like a hash object, with the following differences:
- It keeps a count (the .length attribute) of the number of bytes that
have been added to the pool
- It supports a .reset() method for in-place reinitialization
- The method to add bytes to the pool is .append(), not .update().
c C s | j ƒ d S( N( t reset( t self( ( sN /usr/lib64/python2.7/site-packages/Crypto/Random/Fortuna/FortunaAccumulator.pyt __init__6 s c C s) | j j | ƒ | j t | ƒ 7_ d S( N( t _ht updatet lengtht len( R t data( ( sN /usr/lib64/python2.7/site-packages/Crypto/Random/Fortuna/FortunaAccumulator.pyt append9 s c C s
| j j ƒ S( N( R t digest( R ( ( sN /usr/lib64/python2.7/site-packages/Crypto/Random/Fortuna/FortunaAccumulator.pyR
= s c C s= t j d d k r# t | j ƒ ƒ St | j ƒ ƒ j ƒ Sd S( Ni i ( t syst version_infoR R
t decode( R ( ( sN /usr/lib64/python2.7/site-packages/Crypto/Random/Fortuna/FortunaAccumulator.pyt hexdigest@ s c C s t j ƒ | _ d | _ d S( Ni ( t SHAd256t newR R ( R ( ( sN /usr/lib64/python2.7/site-packages/Crypto/Random/Fortuna/FortunaAccumulator.pyR F s (
t __name__t
__module__t __doc__R t digest_sizeR R R
R R ( ( ( sN /usr/lib64/python2.7/site-packages/Crypto/Random/Fortuna/FortunaAccumulator.pyR ) s c C sh | d k s t ‚ g } d } xC t d ƒ D]5 } | | @d k rQ | j | ƒ n P| d >d B} q+ W| S( s? Return a list of pools indexes (in range(32)) that are to be included during reseed number r.
According to _Practical Cryptography_, chapter 10.5.2 "Pools":
"Pool P_i is included if 2**i is a divisor of r. Thus P_0 is used
every reseed, P_1 every other reseed, P_2 every fourth reseed, etc."
i i i l ( t AssertionErrort rangeR ( t rt retvalt maskt i( ( sN /usr/lib64/python2.7/site-packages/Crypto/Random/Fortuna/FortunaAccumulator.pyt which_poolsJ s t FortunaAccumulatorc B sD e Z d Z d Z d „ Z d „ Z d „ Z d d „ Z d „ Z RS( i@ gš™™™™™¹?c C sj d | _ t j ƒ | _ d | _ g t d ƒ D] } t ƒ ^ q. | _ | j d | j d k sf t ‚ d S( Ni i i (
t reseed_countt FortunaGeneratort AESGeneratort generatort Nonet last_reseedR R t poolsR ( R R ( ( sN /usr/lib64/python2.7/site-packages/Crypto/Random/Fortuna/FortunaAccumulator.pyR u s
%c C s
d | _ d S( N( R$ R% ( R ( ( sN /usr/lib64/python2.7/site-packages/Crypto/Random/Fortuna/FortunaAccumulator.pyt _forget_last_reseed s c C s¤ t j ƒ } | j d k rF | j | k rF t j d t ƒ d | _ n | j d j | j k r” | j d k s„ | | j | j k r” | j
| ƒ n | j j | ƒ S( Ns- Clock rewind detected. Resetting last_reseed.i (
t timeR% R$ t warningst warnR R& R t
min_pool_sizet reseed_intervalt _reseedR# t pseudo_random_data( R t bytest current_time( ( sN /usr/lib64/python2.7/site-packages/Crypto/Random/Fortuna/FortunaAccumulator.pyt random_dataŠ s c C s§ | d k r t j ƒ } n g } | j d 7_ | | _ xB t | j ƒ D]1 } | j | j | j ƒ ƒ | j | j ƒ qI Wt d ƒ j
| ƒ } | j j | ƒ d S( Ni t (
R$ R( R R% R R R& R
R t bt joinR# t reseed( R R0 t seedR ( ( sN /usr/lib64/python2.7/site-packages/Crypto/Random/Fortuna/FortunaAccumulator.pyR- – s c C s¾ d t | ƒ k o d k n s( t ‚ d | k o? d k n sJ t ‚ d | k oa d k n sl t ‚ | j | j t | ƒ ƒ | j | j t t | ƒ ƒ ƒ | j | j | ƒ d S( Ni i i iÿ i ( R
R R& R t bchr( R t
source_numbert pool_numberR ( ( sN /usr/lib64/python2.7/site-packages/Crypto/Random/Fortuna/FortunaAccumulator.pyt add_random_event£ s ("" N(
R R R+ R, R R' R1 R$ R- R: ( ( ( sN /usr/lib64/python2.7/site-packages/Crypto/Random/Fortuna/FortunaAccumulator.pyR _ s
( t __revision__R R t Crypto.Util.py21compatt Crypto.Util.py3compatt binasciiR R( R) t Crypto.pct_warningsR R R! t objectR R R ( ( ( sN /usr/lib64/python2.7/site-packages/Crypto/Random/Fortuna/FortunaAccumulator.pyt <module> s &
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