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d d Z d Z d Z d Z d Z h d d 6d d 6d d 6d d! 6d" d# 6d$ d% 6d& d' 6d( d) 6d* d+ 6d, d- 6d. d/ 6d0 d1 6d2 d3 6d4 d5 6d6 d7 6d8 d9 6d: d; 6d< d= 6d> d? 6d@ dA 6dB dC 6dD dE 6dF dG 6dH dI 6dJ dK 6dL dM 6dN dO 6dP dQ 6dR dS 6dT dU 6dV dW 6dX dY 6Z e i Z e i g Z e D] \ Z Z e e q[ Z e g Z e i D] \ Z Z e e e e f q [ Z dZ Z e d d[ Z d\ Z! e d] Z" d^ Z# e# d; d3 Z$ d_ Z% d` Z& da Z' db Z( dc Z) dd Z* e+ de j o e) n d S(f s/ RFC 3548: Base16, Base32, Base64 Data EncodingsiNt encodet decodet encodestringt decodestringt b64encodet b64decodet b32encodet b32decodet b16encodet b16decodet standard_b64encodet standard_b64decodet urlsafe_b64encodet urlsafe_b64decodei t c C sJ t } x* | i D] \ } } | | t | <q W| i d i | S( NR ( t _translationt itemst ordt translatet join( t st altcharst translationt kt v( ( s /usr/lib/python2.6/base64.pyt
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c C sH t i | d } | d j o$ t | h | d d 6| d d 6 S| S( sl Encode a string using Base64.
s is the string to encode. Optional altchars must be a string of at least
length 2 (additional characters are ignored) which specifies an
alternative alphabet for the '+' and '/' characters. This allows an
application to e.g. generate url or filesystem safe Base64 strings.
The encoded string is returned.
ii t +i t /N( t binasciit
b2a_base64t NoneR ( R R t encoded( ( s /usr/lib/python2.6/base64.pyR * s
$c C sr | d j o) t | h d | d 6d | d 6 } n y t i | SWn$ t i j
o } t | n Xd S( s Decode a Base64 encoded string.
s is the string to decode. Optional altchars must be a string of at least
length 2 (additional characters are ignored) which specifies the
alternative alphabet used instead of the '+' and '/' characters.
The decoded string is returned. A TypeError is raised if s were
incorrectly padded or if there are non-alphabet characters present in the
string.
R i R i N( R R R t
a2b_base64t Errort TypeError( R R t msg( ( s /usr/lib/python2.6/base64.pyR ; s
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t | S( sy Encode a string using the standard Base64 alphabet.
s is the string to encode. The encoded string is returned.
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t | S( s Decode a string encoded with the standard Base64 alphabet.
s is the string to decode. The decoded string is returned. A TypeError
is raised if the string is incorrectly padded or if there are non-alphabet
characters present in the string.
( R ( R ( ( s /usr/lib/python2.6/base64.pyR V s c C s
t | d S( s Encode a string using a url-safe Base64 alphabet.
s is the string to encode. The encoded string is returned. The alphabet
uses '-' instead of '+' and '_' instead of '/'.
s -_( R ( R ( ( s /usr/lib/python2.6/base64.pyR _ s c C s
t | d S( sD Decode a string encoded with the standard Base64 alphabet.
s is the string to decode. The decoded string is returned. A TypeError
is raised if the string is incorrectly padded or if there are non-alphabet
characters present in the string.
The alphabet uses '-' instead of '+' and '_' instead of '/'.
s -_( R ( R ( ( s /usr/lib/python2.6/base64.pyR
g s t Ai t Ji t Si t 3i t Bi t Ki
t Ti t 4i t Ci t Li t Ui t 5i t Di t Mi t Vi t 6i t Ei t Ni
t Wi t 7i t Fi t Oi t Xi t Gi t Pi t Yi t Hi t Qi t Zi t Ii t Ri t 2i c
C s g } t t | d \ } } | o | d d | 7} | d 7} n x t | D] } t i d | | d | d d ! \ } } } | | d @d >7} | | d @d >7} | i t | d ?t | d ?d
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| d d S| S( sc Encode a string using Base32.
s is the string to encode. The encoded string is returned.
i t i s !HHBi i i i i i i i i is ======is ====is ===i it =( t divmodt lent ranget structt unpackt extendt _b32tabt EMPTYSTRINGR ( R t partst quantat leftovert it c1t c2t c3R ( ( s /usr/lib/python2.6/base64.pyR s8
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C s# t t | d \ } } | o t d n | o! t | h d d 6| d 6 } n | o | i } n d } t i d | } | o5 t | i d } | d j o | | } q n g } d } d } x | D] }
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} ny | d j o | d } n^ | d j o | d } nC | d j o | d } n( | d j o | d } n
t d | i | t i | S( sG Decode a Base32 encoded string.
s is the string to decode. Optional casefold is a flag specifying whether
a lowercase alphabet is acceptable as input. For security purposes, the
default is False.
RFC 3548 allows for optional mapping of the digit 0 (zero) to the letter O
(oh), and for optional mapping of the digit 1 (one) to either the letter I
(eye) or letter L (el). The optional argument map01 when not None,
specifies which letter the digit 1 should be mapped to (when map01 is not
None, the digit 0 is always mapped to the letter O). For security
purposes the default is None, so that 0 and 1 are not allowed in the
input.
The decoded string is returned. A TypeError is raised if s were
incorrectly padded or if there are non-alphabet characters present in the
string.
i s Incorrect paddingR9 t 0t 1i s (?P<pad>[=]*)$t padi# s Non-base32 digit foundi s %010xR i ii ii ii iN( RF RG R" R t uppert ret searcht groupt _b32revt getR t appendR t unhexlifyRM R (
R t casefoldt map01RO RP t padcharst moRN t acct shiftt ct valt last( ( s /usr/lib/python2.6/base64.pyR sR !
c C s t i | i S( sc Encode a string using Base16.
s is the string to encode. The encoded string is returned.
( R t hexlifyRX ( R ( ( s /usr/lib/python2.6/base64.pyR s c C sG | o | i } n t i d | o t d n t i | S( sw Decode a Base16 encoded string.
s is the string to decode. Optional casefold is a flag specifying whether
a lowercase alphabet is acceptable as input. For security purposes, the
default is False.
The decoded string is returned. A TypeError is raised if s were
incorrectly padded or if there are non-alphabet characters present in the
string.
s [^0-9A-F]s Non-base16 digit found( RX RY RZ R" R R_ ( R R` ( ( s /usr/lib/python2.6/base64.pyR s
iL c C s x t o | i t } | p Pn xG t | t j o3 | i t t | } | p Pn | | 7} q( Wt i | } | i | q Wd S( s Encode a file.N( t Truet readt
MAXBINSIZERG R R t write( t inputt outputR t nst line( ( s /usr/lib/python2.6/base64.pyR s c C sG x@ t o8 | i } | p Pn t i | } | i | q Wd S( s Decode a file.N( Rj t readlineR R Rm ( Rn Ro Rq R ( ( s /usr/lib/python2.6/base64.pyR , s c C s] g } xG t d t | t D]- } | | | t !} | i t i | q Wd i | S( s4 Encode a string into multiple lines of base-64 data.i R ( RH RG Rl R^ R R R ( R t piecesRQ t chunk( ( s /usr/lib/python2.6/base64.pyR 6 s c C s
t i | S( s Decode a string.( R R ( R ( ( s /usr/lib/python2.6/base64.pyR ? s c C sO d d k } d d k } y# | i | i d d \ } } WnF | i j
o7 } | i | _ | GHd | i d GH| i d n Xt } xr | D]j \ } } | d j o
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| i n | | i | i d S( s Small test programiNi t deuts usage: %s [-d|-e|-u|-t] [file|-]
-d, -u: decode
-e: encode (default)
-t: encode and decode string 'Aladdin:open sesame'i i s -es -ds -us -tt -t rb( t syst getoptt argvt errort stderrt stdoutt exitR R t test1t opent stdin( Rx Ry t optst argsR# t funct ot a( ( s /usr/lib/python2.6/base64.pyt testF s. #
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