RosettaCodeData/Task/SHA-1/J/sha-1-3.j
2018-06-22 20:57:24 +00:00

36 lines
711 B
Text

pad=: ,1,(0#~512 | [: - 65 + #),(64#2)#:#
f=:4 :0
'B C D'=: _32 ]\ y
if. x < 20 do.
(B*C)+.D>B
elseif. x < 40 do.
B~:C~:D
elseif. x < 60 do.
(B*C)+.(B*D)+.C*D
elseif. x < 80 do.
B~:C~:D
end.
)
K=: ((32#2) #: 16b5a827999 16b6ed9eba1 16b8f1bbcdc 16bca62c1d6) {~ <.@%&20
plus=:+&.((32#2)&#.)
H=: #: 16b67452301 16befcdab89 16b98badcfe 16b10325476 16bc3d2e1f0
process=:4 :0
W=. (, [: , 1 |."#. _3 _8 _14 _16 ~:/@:{ ])^:64 x ]\~ _32
'A B C D E'=. y=._32[\,y
for_t. i.80 do.
TEMP=. (5|.A) plus (t f B,C,D) plus E plus (W{~t) plus K t
E=. D
D=. C
C=. 30 |. B
B=. A
A=. TEMP
end.
,y plus A,B,C,D,:E
)
sha1=: [:> [: process&.>/ (<H) (,~ |.) _512<\ pad