h SrSSKrSSKrSSKr\"\SS5r\Rr"SS\ 5r "SS\ 5r "SS 5r \ "5r \ Rr\ RrC /S Qrg) zQ Cryptographically secure random implementation, with fallback on normal random. N getrandbitsc\rSrSrSrSrg)SecureRandomNotAvailablez< Exception raised when no secure random algorithm is found. N__name__ __module__ __qualname____firstlineno____doc____static_attributes__r_/root/1688_scrapy/alibaba-scraper/venv/lib/python3.13/site-packages/twisted/python/randbytes.pyrrrrc\rSrSrSrSrg)SourceNotAvailablezI Internal exception used when a specific random source is not available. rNrrrrrrrrrc\rSrSrSrSr\rS\S\4Sjr SS\S\ S\4Sjjr S\S\4S jr \Rr\"S S 5rS\S\4S jrS\S\4S jrSrg ) RandomFactoryz Factory providing L{secureRandom} and L{insecureRandom} methods. You shouldn't have to instantiate this class, use the module level functions instead: it is an implementation detail and could be removed or changed arbitrarily. rnbytesreturncv[R"U5$![[4an[ U5eSnAff=f)z? Wrapper around C{os.urandom} that cleanly manage its absence. N)osurandomAttributeErrorNotImplementedErrorr)selfres r _osUrandomRandomFactory._osUrandom-s7 (::f% % 34 ($Q' ' (s8 38fallbackcURU5$![a Of=fU(a+[R"S[SS9 UR U5$[ S5e)a# Return a number of secure random bytes. @param nbytes: number of bytes to generate. @type nbytes: C{int} @param fallback: Whether the function should fallback on non-secure random or not. Default to C{False}. @type fallback: C{bool} @return: a string of random bytes. @rtype: C{str} zPurandom unavailable - proceeding with non-cryptographically secure random source)category stacklevelz!No secure random source available)r!rwarningswarnRuntimeWarninginsecureRandomr)rrr#s r secureRandomRandomFactory.secureRandom6sd ??6* *!     MMM'   &&v. .*+NO O   cURb*URUS-5nSUS--U-n[U5$[S5e)z# Wrapper around C{os.getrandbits}. z%%0%dxr%z#random.getrandbits is not available)r_fromhexr)rrnhexBytess r _randBitsRandomFactory._randBitsSsN    '  !,A FQJ/14HH% % !FGGrrc SR[U5Vs/sH-n[[R"UR 5/5PM/ sn5$s snf)z& Wrapper around the C{random} module. r)joinrangebytesrandomchoice_BYTES)rris r _randModuleRandomFactory._randModule`s>xxeFmTm dkk :;)rrs rr+RandomFactory.insecureRandomfs9 >>&) )!   ''r.N)F)r r r r r randomSourcesrintr9r!boolr,r4 maketrans _maketransr<r>r+rrrrrrsMK(((P3P$P5P:HHHJ S !FV#V%V (S(U(rr)r,r+r)r rr:r(getattrrr9fromhexr1 RuntimeErrorrrrfactoryr,r+__all__rrrrLs{   fmT2 ==|  U(U(p /## ''  Ir