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T:Nc @ s~ d d l m Z m Z d d l Z d d l Td d d g Z d d
d YZ d e f d YZ d e f d YZ d S( i( t
long_to_bytest
bytes_to_longN( t *t DerObjectt
DerIntegert DerSequencec B sh e Z i e d d 6e d d 6e d d 6Z d d Z d Z d Z d Z d
d Z RS(
t 0t SEQUENCEs s
BIT STRINGs t INTEGERc C s+ | j j | | | _ t d | _ d S( Nt ( t typeTagst gett typeTagt bt payload( t selft ASN1Type( ( s4 /usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyt __init__ s c C s: | d k r0 t | } t t | d | St | S( s
Return an octet string that is suitable for the BER/DER
length element if the relevant payload is of the given
size (in bytes).
i i ( R t bchrt len( R t
payloadLent encoding( ( s4 /usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyt
_lengthOctets$ s c C s$ | j | j t | j | j S( N( R R R R ( R ( ( s4 /usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyt encode/ s c C s t | | } | d k r* | | d f St | | d | d | d @! } | d k rh t d n | | d | d @f Sd S( s
Given a string and an index to a DER LV,
this function returns a tuple with the length of V
and an index to the first byte of it.
i i s Not a DER length tag.N( t bordR t
ValueError( R t idxt strt lengtht
payloadLength( ( s4 /usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyt
_decodeLen2 s # i c C s y | d | _ t | j d @d k r8 t d n | j d | \ } } | r{ t | | | k r{ t d n | | | | !| _ Wn t k
r t d n X| | S( Ni i s Unsupported DER tagi s Not a DER structures Not a valid DER SEQUENCE.( R R R R R R t
IndexError( R t inputt noLeftOversR R ( ( s4 /usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyt decodeA s
N(
t __name__t
__module__R
R
t NoneR R R R R" ( ( ( s4 /usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyR s - c B s) e Z d d Z d Z d d Z RS( i c C s t j | d | | _ d S( NR ( R R t value( R R& ( ( s4 /usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyR O s c C sQ t | j | _ t | j d d k rD t d | j | _ n t j | S( Ni i t ( R R& R R R
R R ( R ( ( s4 /usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyR S s c C sS t j | | | } t | j d d k r= t d n t | j | _ | S( Ni i s Negative INTEGER.( R R" R R R R R& ( R R R! t tlvLength( ( s4 /usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyR" Y s
( R# R$ R R R" ( ( ( s4 /usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyR N s c B s e Z d Z d Z d Z d Z e j d d k r[ d Z d Z d Z
n d Z d
Z d Z
d Z d d
Z RS( c C s t j | d g | _ d S( NR ( R R t _seq( R ( ( s4 /usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyR a s c C s | j | =d S( N( R) ( R t n( ( s4 /usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyt __delitem__d s c C s | j | S( N( R) ( R R* ( ( s4 /usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyt __getitem__f s c C s | | j | <d S( N( R) ( R t keyR& ( ( s4 /usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyt __setitem__h s i i c C s | | j | | +d S( N( R) ( R t it jt sequence( ( s4 /usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyt __setslice__k s c C s | j | | 5d S( N( R) ( R R/ R0 ( ( s4 /usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyt __delslice__m s c C s | j t d | t d | !S( Ni ( R) t max( R R/ R0 ( ( s4 /usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyt __getslice__o s c C s
t | j S( N( R R) ( R ( ( s4 /usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyt __len__q s c C s | j j | S( N( R) t append( R t item( ( s4 /usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyR7 s s c C sN | j s
d Sd } x4 | j D]) } y | | 7} Wq t k
rE d SXq Wd S( Ni i ( R) t TypeError( R t testR8 ( ( s4 /usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyt hasOnlyIntsv s
c C s t d | _ xc | j D]X } y | j | 7_ Wq y | j t | j 7_ Wqq t d qq Xq Xq Wt j | S( s
Return the DER encoding for the ASN.1 SEQUENCE containing
the non-negative integers and longs added to this object.
R s& Trying to DER encode an unknown object( R
R R) R R R R ( R R8 ( ( s4 /usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyR s c C s5 g | _ yt j | | | } | j | j d d k rJ t d n d } x | t | j k r| j | } | | j d d k r t } | | j | j | 7} | j j | j
qS | j | d | j \ } } | j j | j | | | ! | | } qS WWn t k
r0t d n X| S( s
This function decodes the given string into a sequence of
ASN.1 objects. Yet, we only know about unsigned INTEGERs.
Any other type is stored as its rough TLV. In the latter
case, the correctectness of the TLV is not checked.
R i s Not a DER SEQUENCE.R i s Not a valid DER SEQUENCE.(
R) R R" R R
R R R R R7 R& R R ( R R R! R( R R t
newIntegert itemLent itemIdx( ( s4 /usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyR" s$
( R# R$ R R+ R, R. t syst version_infoR2 R3 R5 R6 R7 R; R R" ( ( ( s4 /usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyR ` s
( ( t Crypto.Util.numberR R R? t Crypto.Util.py3compatt __all__R R R ( ( ( s4 /usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyt <module> s
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