U P|j @s~dZddlZddlZddlZeeddZejZGddde Z Gddde Z Gdd d Z e Z e jZe jZ[ d d dgZdS) zQ Cryptographically secure random implementation, with fallback on normal random. N getrandbitsc@seZdZdZdS)SecureRandomNotAvailablezD Exception raised when no secure random algorithm is found. N__name__ __module__ __qualname____doc__r r dsz-RandomFactory._randModule..)joinrangerr r r*r _randModule`szRandomFactory._randModulecCs,z ||WStk r YnX||S)z Return a number of non secure random bytes. @param nbytes: number of bytes to generate. @type nbytes: C{int} @return: a string of random bytes. @rtype: C{str} )r"r r/r.r r r rfs  zRandomFactory.insecureRandomN)F)rrrrZ randomSourcesrintr$rboolrr" maketransZ _maketransr'r/rr r r r r s    r rr)rrr%rgetattrrr$fromhexr RuntimeErrorrr r factoryrr__all__r r r r s X