ó T:´Nc@s~ddlmZmZddlZddlTdddgZdd d„ƒYZdefd„ƒYZdefd „ƒYZdS( iÿÿÿÿ(t long_to_bytest bytes_to_longN(t*t DerObjectt DerIntegert DerSequencecBsheZiedƒd6edƒd6edƒd6Zd d„Zd„Zd„Zd „Zd d „Z RS( t0tSEQUENCEss BIT STRINGstINTEGERcCs+|jj||ƒ|_tdƒ|_dS(Nt(ttypeTagstgetttypeTagtbtpayload(tselftASN1Type((s4/usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyt__init__ scCs:|dkr0t|ƒ}tt|ƒdƒ|St|ƒS(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). ii€(Rtbchrtlen(Rt payloadLentencoding((s4/usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyt _lengthOctets$s  cCs$|j|jt|jƒƒ|jS(N(R RRR(R((s4/usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pytencode/scCs‚t||ƒ}|dkr*||dfSt||d|d|d@!ƒ}|dkrhtdƒ‚n||d|d@fSdS(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. iisNot a DER length tag.N(tbordRt ValueError(Rtidxtstrtlengtht payloadLength((s4/usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyt _decodeLen2s # icCs¸y|d|_t|jƒd@dkr8tdƒ‚n|jd|ƒ\}}|r{t|ƒ||kr{tdƒ‚n||||!|_Wntk r¯tdƒ‚nX||S(NiisUnsupported DER tagisNot a DER structuresNot a valid DER SEQUENCE.(R RRRRRt IndexError(Rtinputt noLeftOversRR((s4/usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pytdecodeAs  N( t__name__t __module__R R tNoneRRRRR"(((s4/usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyRs -   cBs)eZdd„Zd„Zdd„ZRS(icCstj|dƒ||_dS(NR(RRtvalue(RR&((s4/usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyROscCsQt|jƒ|_t|jdƒdkrDtdƒ|j|_ntj|ƒS(Niit(RR&RRR RR(R((s4/usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyRSscCsStj|||ƒ}t|jdƒdkr=tdƒ‚nt|jƒ|_|S(NiisNegative INTEGER.(RR"RRRRR&(RR R!t tlvLength((s4/usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyR"Ys (R#R$RRR"(((s4/usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyRNs  cBseZd„Zd„Zd„Zd„Zejddkr[d„Zd„Z d„Z nd „Z d „Z d „Z d „Zdd „ZRS(cCstj|dƒg|_dS(NR(RRt_seq(R((s4/usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyRascCs|j|=dS(N(R)(Rtn((s4/usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyt __delitem__dscCs |j|S(N(R)(RR*((s4/usr/lib/python2.7/dist-packages/Crypto/Util/asn1.pyt __getitem__fscCs||j|s   1