h"XdZddlZddlZddlmZddlmZddlmZdgZ Gdde Z y)z.integerifyUs1vQ,,r)r rr smix_bytesiv_bytesbmix_len bmix_half_lenstructcalcsizeStructstr bmix_struct_bmix_1bmixoperator itemgetterr")selfr rrr%r"r r!s @@r__init__zScryptEngine.__init__:sq&!+ #$6) !Vs#q((!==s8})z#ScryptEngine.run..rs*U6&"345sr)r$rr:rr#joinrange) r0r r rr$outputr9r:r#s @@@rr zScryptEngine.run\s==Hfd1XNyy 66Q;%[FJXX#Ax<F 8VVAfMMrc  |j |j}|j}|j t |j | fd}t |}|j } dz }d}| krA| |z} tdt || D}  | |dz }| krA|j S)asrun SCrypt smix function on a single input block :arg input: byte string containing input data. interpreted as 32*r little endian 4 byte integers. :returns: byte string containing output data derived by mixing input using n & r parameters. .. note:: time & mem cost are both ``O(n * r)`` c3dKd}|kr$t}|||dz }|kr#yyw)Nrr)tuple)ilastr-bufferr s rvgenzScryptEngine.smix..vgens=Aa%V} T6"Q a%s*00rrc3,K|] \}}||z ywr6rr7abs rr;z$ScryptEngine.smix..sITQ1q5I) r-r+r"r listunpack __getitem__rArpack)r0r9r+r"rEV get_v_elemn_maskrBjresultr-rDr s @@@rr:zScryptEngine.smix}syy&& __ FFk((/0  L ]] Q !e6"V+AIT&*Q--HIIF  FA !e  {((rc|j}|dd}t|}d}||krV|dz}tdt||Dx|||}tdt||Dx|||z||z}|}||krUyy)a block mixing function used by smix() uses salsa20/8 core to mix block contents. :arg source: source to read from. should be list of 32*r 4-byte integers (2*r salsa20 blocks). :arg target: target to write to. should be list with same size as source. the existing value of this buffer is ignored. .. warning:: this operates *in place* on target, so source & target should NOT be same list. .. note:: * time cost is ``O(r)`` -- loops 16*r times, salsa20() has ``O(1)`` cost. * memory cost is ``O(1)`` -- salsa20() uses 16 x uint4, all other operations done in-place. rNrc3,K|] \}}||z ywr6rrGs rr;z$ScryptEngine.bmix..s(L41aQ(LrJc3,K|] \}}||z ywr6rrGs rr;z$ScryptEngine.bmix..s2VTQ1q52VrJ)r&iterrr)r0sourcetargethalftmpsiterrRjns rr-zScryptEngine.bmixs<!!STlV  $h2B!((L4U;K(L!L LF1RL3+22VT#uEU2V+V VF46$r' "SA $hrc |dd}tdt|t|Dx|dd}tdt||D|ddy)z0special bmix() method optimized for ``r=1`` caserUNc3,K|] \}}||z ywr6rrGs rr;z'ScryptEngine._bmix_1..s#LdaAE#LrJc3,K|] \}}||z ywr6rrGs rr;z'ScryptEngine._bmix_1..s=1a!e=rJ)rrrX)r0rYrZBr\s rr,zScryptEngine._bmix_1sO 23K##Ld1d6l6K#LLLs c=S! ==rs r)__name__ __module__ __qualname____doc__r rrr#r$r%r&r+r" classmethodrr1r r:r-r,rrrrrsj A A AJHHMKJ 66%DNB>)F&P>r) rfr.r'passlib.utils.compatrpasslib.crypto.digestrpasslib.crypto.scrypt._salsar__all__objectrrrrrms3B  %-0 X>6X>r