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implementing sha2 512

db4
Doug Coleman 2009-05-08 19:00:06 -05:00
parent 5451d8f976
commit c0a3ef631a
3 changed files with 78 additions and 24 deletions
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3
basis/checksums/common/common.factor
View File

@ -9,6 +9,9 @@ SYMBOL: bytes-read
: calculate-pad-length ( length -- length' )
[ 56 < 55 119 ? ] keep - ;
: calculate-pad-length-long ( length -- length' )
[ 112 < 111 249 ? ] keep - ;
: pad-last-block ( str big-endian? length -- str )
[
[ % ] 2dip HEX: 80 ,

6
basis/checksums/sha2/sha2-tests.factor
View File

@ -34,3 +34,9 @@ IN: checksums.sha2.tests
"12345678901234567890123456789012345678901234567890123456789012345678901234567890"
sha-256 test-checksum
] unit-test
[ "8e959b75dae313da8cf4f72814fc143f8f7779c6eb9f7fa17299aeadb6889018501d289e4900f7e4331b99dec4b5433ac7d329eeb6dd26545e96e55b874be909" ]
[ "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu" sha-512 test-checksum ] unit-test

93
basis/checksums/sha2/sha2.factor
View File

@ -6,9 +6,31 @@ sbufs strings combinators.smart math.ranges fry combinators
accessors locals ;
IN: checksums.sha2
<PRIVATE
SINGLETON: sha-224
SINGLETON: sha-256
SINGLETON: sha-384
SINGLETON: sha-512
SYMBOL: sha2
INSTANCE: sha-224 checksum
INSTANCE: sha-256 checksum
INSTANCE: sha-384 checksum
INSTANCE: sha-512 checksum
TUPLE: sha2-state K H word-size block-size ;
TUPLE: sha2-short < sha2-state ;
TUPLE: sha2-long < sha2-state ;
TUPLE: sha-224-state < sha2-short ;
TUPLE: sha-256-state < sha2-short ;
TUPLE: sha-384-state < sha2-long ;
TUPLE: sha-512-state < sha2-long ;
<PRIVATE
CONSTANT: a 0
CONSTANT: b 1
@ -77,6 +99,10 @@ CONSTANT: K-256
CONSTANT: K-384
{
HEX: 428a2f98d728ae22 HEX: 7137449123ef65cd HEX: b5c0fbcfec4d3b2f HEX: e9b5dba58189dbbc
HEX: 3956c25bf348b538 HEX: 59f111f1b605d019 HEX: 923f82a4af194f9b HEX: ab1c5ed5da6d8118
HEX: d807aa98a3030242 HEX: 12835b0145706fbe HEX: 243185be4ee4b28c HEX: 550c7dc3d5ffb4e2
HEX: 72be5d74f27b896f HEX: 80deb1fe3b1696b1 HEX: 9bdc06a725c71235 HEX: c19bf174cf692694
HEX: e49b69c19ef14ad2 HEX: efbe4786384f25e3 HEX: 0fc19dc68b8cd5b5 HEX: 240ca1cc77ac9c65
HEX: 2de92c6f592b0275 HEX: 4a7484aa6ea6e483 HEX: 5cb0a9dcbd41fbd4 HEX: 76f988da831153b5
@ -144,14 +170,25 @@ ALIAS: K-512 K-384
: slice3 ( n seq -- a b c )
[ dup 3 + ] dip <slice> first3 ; inline
: pad-initial-bytes ( string -- padded-string )
GENERIC: pad-initial-bytes ( string sha2 -- padded-string )
M: sha2-short pad-initial-bytes ( string sha2 -- padded-string )
drop
dup [
HEX: 80 ,
length
[ HEX: 3f bitand calculate-pad-length 0 <string> % ]
[ 64 mod calculate-pad-length 0 <string> % ]
[ 3 shift 8 >be % ] bi
] "" make append ;
M: sha2-long pad-initial-bytes ( string sha2 -- padded-string )
drop dup [
HEX: 80 ,
length
[ 128 mod calculate-pad-length-long 0 <string> % ]
[ 3 shift 16 >be % ] bi
] "" make append ;
: seq>byte-array ( seq n -- string )
'[ _ >be ] map B{ } join ;
@ -179,7 +216,7 @@ ALIAS: K-512 K-384
: prepare-message-schedule ( seq sha2 -- w-seq )
[ word-size>> <sliced-groups> [ be> ] map ]
[
block-size>> 0 pad-tail 16 64 [a,b) over
block-size>> [ 0 pad-tail 16 ] keep [a,b) over
'[ _ process-M-256 ] each
] bi ; inline
@ -199,25 +236,9 @@ ALIAS: K-512 K-384
] each ;
: byte-array>sha2 ( bytes state -- )
[ [ pad-initial-bytes ] [ block-size>> ] bi* <sliced-groups> ]
[ [ pad-initial-bytes ] [ nip block-size>> ] 2bi <sliced-groups> ]
[ sha2-steps ] bi ;
PRIVATE>
SINGLETON: sha-224
SINGLETON: sha-256
SINGLETON: sha-384
SINGLETON: sha-512
INSTANCE: sha-224 checksum
INSTANCE: sha-256 checksum
INSTANCE: sha-384 checksum
INSTANCE: sha-512 checksum
TUPLE: sha2-state K H word-size block-size ;
TUPLE: sha-224-state < sha2-state ;
: <sha-224-state> ( -- sha2-state )
sha-224-state new
K-256 >>K
@ -225,8 +246,6 @@ TUPLE: sha-224-state < sha2-state ;
4 >>word-size
64 >>block-size ;
TUPLE: sha-256-state < sha2-state ;
: <sha-256-state> ( -- sha2-state )
sha-256-state new
K-256 >>K
@ -234,6 +253,22 @@ TUPLE: sha-256-state < sha2-state ;
4 >>word-size
64 >>block-size ;
: <sha-384-state> ( -- sha2-state )
sha-384-state new
K-384 >>K
initial-H-384 >>H
8 >>word-size
80 >>block-size ;
: <sha-512-state> ( -- sha2-state )
sha-512-state new
K-512 >>K
initial-H-512 >>H
8 >>word-size
80 >>block-size ;
PRIVATE>
M: sha-224 checksum-bytes
drop <sha-224-state>
[ byte-array>sha2 ]
@ -243,3 +278,13 @@ M: sha-256 checksum-bytes
drop <sha-256-state>
[ byte-array>sha2 ]
[ H>> 4 seq>byte-array ] bi ;
M: sha-384 checksum-bytes
drop <sha-384-state>
[ byte-array>sha2 ]
[ H>> 6 head 8 seq>byte-array ] bi ;
M: sha-512 checksum-bytes
drop <sha-512-state>
[ byte-array>sha2 ]
[ H>> 8 seq>byte-array ] bi ;