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cleaning up sha2

db4
Doug Coleman 2009-05-08 09:51:57 -05:00
parent f2f834a234
commit 660bb079ae
1 changed files with 16 additions and 12 deletions
basis/checksums/sha2

28
basis/checksums/sha2/sha2.factor
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@ -2,12 +2,12 @@
! 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 ;
sbufs strings combinators.smart ;
IN: checksums.sha2
<PRIVATE
SYMBOLS: vars M K H S0 S1 process-M word-size block-size ;
SYMBOLS: vars K H process-M word-size block-size ;
CONSTANT: a 0
CONSTANT: b 1
@ -18,13 +18,13 @@ CONSTANT: f 5
CONSTANT: g 6
CONSTANT: h 7
: initial-H-256 ( -- seq )
CONSTANT: initial-H-256
{
HEX: 6a09e667 HEX: bb67ae85 HEX: 3c6ef372 HEX: a54ff53a
HEX: 510e527f HEX: 9b05688c HEX: 1f83d9ab HEX: 5be0cd19
} ;
}
: K-256 ( -- seq )
CONSTANT: K-256
{
HEX: 428a2f98 HEX: 71374491 HEX: b5c0fbcf HEX: e9b5dba5
HEX: 3956c25b HEX: 59f111f1 HEX: 923f82a4 HEX: ab1c5ed5
@ -42,17 +42,21 @@ CONSTANT: h 7
HEX: 391c0cb3 HEX: 4ed8aa4a HEX: 5b9cca4f HEX: 682e6ff3
HEX: 748f82ee HEX: 78a5636f HEX: 84c87814 HEX: 8cc70208
HEX: 90befffa HEX: a4506ceb HEX: bef9a3f7 HEX: c67178f2
} ;
}
: s0-256 ( x -- x' )
[ -7 bitroll-32 ] keep
[ -18 bitroll-32 ] keep
-3 shift bitxor bitxor ; inline
[
[ -7 bitroll-32 ]
[ -18 bitroll-32 ]
[ -3 shift ] tri
] [ bitxor ] reduce-outputs ; inline
: s1-256 ( x -- x' )
[ -17 bitroll-32 ] keep
[ -19 bitroll-32 ] keep
-10 shift bitxor bitxor ; inline
[
[ -17 bitroll-32 ]
[ -19 bitroll-32 ]
[ -10 shift ] tri
] [ bitxor ] reduce-outputs ; inline
: process-M-256 ( seq n -- )
[ 16 - swap nth ] 2keep