Htj"`dZddlZddlZddlmZddlmZddlmZdgZ Gdde Z dS)z.integerifyUs"s1vvQ,,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&!+ #$6) !Vs##q((((!=s8}})z#ScryptEngine.run..rsPU6&"33455rr)r$rr:rr#joinrange) r0r r rr$outputr9r:r#s @@@rr zScryptEngine.run\s=Hfd1XNNNy 6Q;;T%[[FFJXX#Ax<<F 8VVAfMMMMrc  |j |j}|j}|j t || fd}t |}|j} dz }d}| krU| |z} tdt || D}  | |dz }| kU|j S)asrun SCrypt smix function on a single input block :arg input: byte string containing input data. interpreted as 32*r little endian 4 byte integers. :returns: byte string containing output data derived by mixing input using n & r parameters. .. note:: time & mem cost are both ``O(n * r)`` c3tKd}|kr,t}|V||dz }|k*dSdS)Nrr)tuple)ilastr-bufferr s rvgenzScryptEngine.smix..vgensWAa%%V}} T6"""Q a%%%%%%rrrc3&K|] \}}||z V dSr6rr7abs rr;z$ScryptEngine.smix..s*IITQ1q5IIIIIIr) r-r+r"r listunpack __getitem__rArpack)r0r9r+r"rEV get_v_elemn_maskrBjresultr-rDr s @@@rr:zScryptEngine.smix}sy& _ Fk((//00        LL ] Q !ee 6""V+AIIT&**Q---H-HIIIIIF D FA !ee  {((rc8|j}|dd}t|}d}||krq|dz}tdt||Dx|||<}tdt||Dx|||z||z<}|}||kodSdS)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 V dSr6rrGs rr;z$ScryptEngine.bmix..s*(L(L41aQ(L(L(L(L(L(Lrc3&K|] \}}||z V dSr6rrGs rr;z$ScryptEngine.bmix..s*2V2VTQ1q52V2V2V2V2V2Vr)r&iterrr)r0sourcetargethalftmpsiterrQjns rr-zScryptEngine.bmixs<!STTlV  $hh2B!((L(L4U;K;K(L(L(L!L!L LF1R4L3+22V2VT#uEUEU2V2V2V+V+V VF46$r'> "SA $hhhhhhrc |dd}tdt|t|Dx|dd<}tdt||D|dd<dS)z0special bmix() method optimized for ``r=1`` caserTNc3&K|] \}}||z V dSr6rrGs rr;z'ScryptEngine._bmix_1..s*#L#LdaAE#L#L#L#L#L#Lrc3&K|] \}}||z V dSr6rrGs rr;z'ScryptEngine._bmix_1..s*==1a!e======r)rrrW)r0rXrYBr[s rr,zScryptEngine._bmix_1sx 233K##L#Ld1d6ll6K6K#L#L#LLLLss c==S! =====rss r)__name__ __module__ __qualname____doc__r rrr#r$r%r&r+r" classmethodrr1r r:r-r,rrrrrs A A AJHHMKJ 66[6%%%DNNNB>)>)>)F&&&P>>>>>r) rer.r'passlib.utils.compatrpasslib.crypto.digestrpasslib.crypto.scrypt._salsar__all__objectrrrrrlsBB  %%%%%%------000000 X>X>X>X>X>6X>X>X>X>X>r