! Copyright (C) 2008 Doug Coleman.
! See http://factorcode.org/license.txt for BSD license.
-USING: kernel splitting grouping math sequences namespaces make
-io.binary math.bitwise checksums checksums.common
-sbufs strings combinators.smart math.ranges fry combinators
-accessors locals checksums.stream multiline literals
-generalizations ;
+USING: accessors checksums checksums.common checksums.stream
+combinators combinators.smart fry generalizations grouping
+io.binary kernel literals locals make math math.bitwise
+math.ranges multiline namespaces sbufs sequences
+sequences.private splitting strings ;
IN: checksums.sha
SINGLETON: sha1
: prepare-M-256 ( n seq -- )
{
- [ [ 16 - ] dip nth ]
- [ [ 15 - ] dip nth s0-256 ]
- [ [ 7 - ] dip nth ]
- [ [ 2 - ] dip nth s1-256 w+ w+ w+ ]
+ [ [ 16 - ] dip nth-unsafe ]
+ [ [ 15 - ] dip nth-unsafe s0-256 ]
+ [ [ 7 - ] dip nth-unsafe ]
+ [ [ 2 - ] dip nth-unsafe s1-256 w+ w+ w+ ]
[ ]
- } 2cleave set-nth ; inline
+ } 2cleave set-nth-unsafe ; inline
: prepare-M-512 ( n seq -- )
{
- [ [ 16 - ] dip nth ]
- [ [ 15 - ] dip nth s0-512 ]
- [ [ 7 - ] dip nth ]
- [ [ 2 - ] dip nth s1-512 w+ w+ w+ ]
+ [ [ 16 - ] dip nth-unsafe ]
+ [ [ 15 - ] dip nth-unsafe s0-512 ]
+ [ [ 7 - ] dip nth-unsafe ]
+ [ [ 2 - ] dip nth-unsafe s1-512 w+ w+ w+ ]
[ ]
- } 2cleave set-nth ; inline
+ } 2cleave set-nth-unsafe ; inline
: ch ( x y z -- x' )
[ bitxor bitand ] keep bitxor ; inline
GENERIC: pad-initial-bytes ( string sha2 -- padded-string )
:: T1-256 ( n M H sha2 -- T1 )
- n M nth
- n sha2 K>> nth +
+ n M nth-unsafe
+ n sha2 K>> nth-unsafe +
e H slice3 ch w+
- e H nth S1-256 w+
- h H nth w+ ; inline
+ e H nth-unsafe S1-256 w+
+ h H nth-unsafe w+ ; inline
: T2-256 ( H -- T2 )
- [ a swap nth S0-256 ]
+ [ a swap nth-unsafe S0-256 ]
[ a swap slice3 maj w+ ] bi ; inline
:: T1-512 ( n M H sha2 -- T1 )
- n M nth
- n sha2 K>> nth +
+ n M nth-unsafe
+ n sha2 K>> nth-unsafe +
e H slice3 ch w+
- e H nth S1-512 w+
- h H nth w+ ; inline
+ e H nth-unsafe S1-512 w+
+ h H nth-unsafe w+ ; inline
: T2-512 ( H -- T2 )
- [ a swap nth S0-512 ]
+ [ a swap nth-unsafe S0-512 ]
[ a swap slice3 maj w+ ] bi ; inline
: update-H ( T1 T2 H -- )
- h g pick exchange
- g f pick exchange
- f e pick exchange
- pick d pick nth w+ e pick set-nth
- d c pick exchange
- c b pick exchange
- b a pick exchange
- [ w+ a ] dip set-nth ; inline
+ h g pick exchange-unsafe
+ g f pick exchange-unsafe
+ f e pick exchange-unsafe
+ pick d pick nth-unsafe w+ e pick set-nth-unsafe
+ d c pick exchange-unsafe
+ c b pick exchange-unsafe
+ b a pick exchange-unsafe
+ [ w+ a ] dip set-nth-unsafe ; inline
: prepare-message-schedule ( seq sha2 -- w-seq )
[ word-size>> <sliced-groups> [ be> ] map ]
[ [ block-size>> ] [ H>> clone ] [ ] tri process-chunk ] bi ;
: seq>byte-array ( seq n -- string )
- '[ _ >be ] map B{ } join ;
+ '[ _ >be ] map B{ } concat-as ;
: sha1>checksum ( sha2 -- bytes )
H>> 4 seq>byte-array ;
drop
[ <sha-256-state> ] dip add-checksum-stream get-checksum ;
-
-
: sha1-W ( t seq -- )
{
- [ [ 3 - ] dip nth ]
- [ [ 8 - ] dip nth bitxor ]
- [ [ 14 - ] dip nth bitxor ]
- [ [ 16 - ] dip nth bitxor 1 bitroll-32 ]
+ [ [ 3 - ] dip nth-unsafe ]
+ [ [ 8 - ] dip nth-unsafe bitxor ]
+ [ [ 14 - ] dip nth-unsafe bitxor ]
+ [ [ 16 - ] dip nth-unsafe bitxor 1 bitroll-32 ]
[ ]
- } 2cleave set-nth ;
+ } 2cleave set-nth-unsafe ;
: prepare-sha1-message-schedule ( seq -- w-seq )
4 <sliced-groups> [ be> ] map
} case ;
:: inner-loop ( n H W K -- temp )
- a H nth :> A
- b H nth :> B
- c H nth :> C
- d H nth :> D
- e H nth :> E
+ a H nth-unsafe :> A
+ b H nth-unsafe :> B
+ c H nth-unsafe :> C
+ d H nth-unsafe :> D
+ e H nth-unsafe :> E
[
A 5 bitroll-32
E
- n K nth
+ n K nth-unsafe
- n W nth
+ n W nth-unsafe
] sum-outputs 32 bits ;
:: process-sha1-chunk ( bytes H W K state -- )
80 [
H W K inner-loop
- d H nth e H set-nth
- c H nth d H set-nth
- b H nth 30 bitroll-32 c H set-nth
- a H nth b H set-nth
- a H set-nth
+ d H nth-unsafe e H set-nth-unsafe
+ c H nth-unsafe d H set-nth-unsafe
+ b H nth-unsafe 30 bitroll-32 c H set-nth-unsafe
+ a H nth-unsafe b H set-nth-unsafe
+ a H set-nth-unsafe
] each
state [ H [ w+ ] 2map ] change-H drop ; inline