ó BwLc@skdZddlTddlmZdefd„ƒYZd d„Zd„Zde fd „ƒYZ e Z d S( s$Id$iÿÿÿÿ(t*(tnumberterrorcBseZRS((t__name__t __module__(((s</usr/lib/python2.7/dist-packages/Crypto/PublicKey/ElGamal.pyRscCs¤tƒ}|r|dƒntt||ƒƒ|_|rG|dƒn|dt|dƒƒd@}|dkr~|d}nxTtt||ƒƒ|_|j|jkr¯Pn|d|}|dkrd}qq|rè|dƒnx-|dt|dƒƒ}|dkrëPqëqëxTtt||ƒƒ|_|j|jkrIPn|d|}|dkrd}qq|r‚|d ƒnt|j|j|jƒ|_|S( sígenerate(bits:int, randfunc:callable, progress_func:callable) Generate an ElGamal key of length 'bits', using 'randfunc' to get random data and 'progress_func', if present, to display the progress of the key generation. sp sg ii?iisx isy ( t ElGamalobjtbignumtgetPrimetptordtgtxtpowty(tbitstrandfunct progress_functobjtsize((s</usr/lib/python2.7/dist-packages/Crypto/PublicKey/ElGamal.pytgenerate#sB            cCsltƒ}t|ƒdkr*tdƒ‚nx;tt|ƒƒD]'}|j|}t||||ƒq=W|S(sŸconstruct(tuple:(long,long,long,long)|(long,long,long,long,long))) : ElGamalobj Construct an ElGamal key from a 3- or 4-tuple of numbers. iis%argument for construct() wrong length(ii(Rtlent ValueErrortrangetkeydatatsetattr(ttupleRtitfield((s</usr/lib/python2.7/dist-packages/Crypto/PublicKey/ElGamal.pyt constructOs  RcBsYeZddddgZd„Zd„Zd„Zd„Zd„Zd „Zd „Z RS( RR R R cCsEt|j||jƒ}|t|j||jƒ|j}||fS(N(R R RR (tselftMtKtatb((s</usr/lib/python2.7/dist-packages/Crypto/PublicKey/ElGamal.pyt_encrypt`s#cCs_t|dƒstdƒ‚nt|d|j|jƒ}|dt||jƒ|j}|S(NR s(Private key not available in this objectii(thasattrt TypeErrorR R Rtinverse(RRtaxt plaintext((s</usr/lib/python2.7/dist-packages/Crypto/PublicKey/ElGamal.pyt_decryptes !cCsºt|dƒstdƒ‚n|jd}t||ƒdkrOtdƒ‚nt|j||jƒ}||j||}x|dkr˜||}qW|t||ƒ|}||fS(NR s(Private key not available in this objectisBad K value: GCD(K,p-1)!=1i( R#R$RtGCDRR R R R%(RRRtp1R ttR!((s</usr/lib/python2.7/dist-packages/Crypto/PublicKey/ElGamal.pyt_signls cCspt|j|d|jƒ}|t|d|d|jƒ|j}t|j||jƒ}||krldSdS(Nii(R R RR (RRtsigtv1tv2((s</usr/lib/python2.7/dist-packages/Crypto/PublicKey/ElGamal.pyt_verifyxs ( cCstj|jƒdS(sBReturn the maximum number of bits that can be handled by this key.i(RRR(R((s</usr/lib/python2.7/dist-packages/Crypto/PublicKey/ElGamal.pyR€scCst|dƒrdSdSdS(sQReturn a Boolean denoting whether the object contains private components.R iiN(R#(R((s</usr/lib/python2.7/dist-packages/Crypto/PublicKey/ElGamal.pyt has_private„scCst|j|j|jfƒS(s?Return a new key object containing only the public information.(RRR R (R((s</usr/lib/python2.7/dist-packages/Crypto/PublicKey/ElGamal.pyt publickeyŒs( RRRR"R(R,R0RR1R2(((s</usr/lib/python2.7/dist-packages/Crypto/PublicKey/ElGamal.pyR]s     N( t __revision__tCrypto.PublicKey.pubkeyt Crypto.UtilRt ExceptionRtNoneRRtpubkeyRtobject(((s</usr/lib/python2.7/dist-packages/Crypto/PublicKey/ElGamal.pyts  , 4