ó ír Uc@sWdZddlZddlmZmZddlmZd„Zd„Zd„Z dS(s(Functions for generating random numbers.i˙˙˙˙N(tcommont transform(tbytecCsjt|dƒ\}}tj|ƒ}|dkrfttjdƒƒ}|d|L}t|ƒ|}n|S(sReads 'nbits' random bits. If nbits isn't a whole number of bytes, an extra byte will be appended with only the lower bits set. iii(tdivmodtosturandomtordR(tnbitstnbytestrbitst randomdatat randomvalue((s,c:\Python27\lib\site-packages\rsa\randnum.pytread_random_bitss cCs1t|ƒ}tj|ƒ}|d|d>O}|S(s8Reads a random integer of approximately nbits bits. i(R Rt bytes2int(RR tvalue((s,c:\Python27\lib\site-packages\rsa\randnum.pytread_random_int/s cCsotj|ƒ}d}xStrjt|ƒ}||kr:Pn|r]|ddkr]|d8}n|d7}qW|S(sâReturns a random integer x with 1 <= x <= maxvalue May take a very long time in specific situations. If maxvalue needs N bits to store, the closer maxvalue is to (2 ** N) - 1, the faster this function is. ii i(Rtbit_sizetTrueR(tmaxvalueRttriesR((s,c:\Python27\lib\site-packages\rsa\randnum.pytrandint<s    ( t__doc__RtrsaRRt rsa._compatRR RR(((s,c:\Python27\lib\site-packages\rsa\randnum.pyts