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(formerly Perl 6)
<syntaxhighlight lang="raku" line>sub md4($str) {
my @$buf = $str.ordsencode;
my $buflen(&f, &g, &h, &r) = @buf.elems;
my &h = ->{ $ ^x , +& $ ^y , $z {+| +^$x + ^& $ y +^ $z } ,▼
my &g = -> $x, $y, $z { ($ ^x +& $ ^y ) +| ($x +& $ ^z ) +| ($y +& $z ) } ,▼
{ $ ^x + =^ $ n^y + &^ $^z 0xff;},▼ # for some reason we have to type v here
my &r = -> uint32 $v, $s { (($v +< $s ) +& mask) +| (($v +& mask) +> (32 - $s )) } ▼
sub pack-le (@a) { @a.rotor(4).map: {:256[.reverse]} }
my \mask = (1 +< 32) - 1;
my &f = -> $x, $y, $z { ($x +& $y) +| ($x +^ mask) +& $z }
▲ my &g = -> $x, $y, $z { ($x +& $y) +| ($x +& $z) +| ($y +& $z) }
▲ my &h = -> $x, $y, $z { $x +^ $y +^ $z }
▲ my &r = -> $v, $s { (($v +< $s) +& mask) +| (($v +& mask) +> (32 - $s)) }
sub pack-le (@a) {
gather for @a -> $a,$b,$c,$d { take $d +< 24 + $c +< 16 + $b +< 8 + $a }
my uint32 ($a, $b, $c, $d) = 0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476;
my $term = False;
my $last = False;
myfor @$offbuf.rotor(64, =:partial) 0;{
my @block = @ buf[$ off..$off+63]:v; $off += 64_; ▼ repeat until $last {
▲ my @block = @buf[$off..$off+63]:v; $off += 64;
my uint32 @x;
given +@block {
when 64 { @x = pack-le @block }
@x = pack-le @block; when 56..63 {
$term = True;
@block.push(0x80);
when 56..63 {
$term = True @block.push(slip 0 xx 63 - $_);
@x = pack-le @block.push(0x80);
@block.push(slip 0 xx 63 - $_);}
@x = pack-le @block; when 0..55 {
@block.push($term ?? 0 !! 0x80);
@block.push(slip 0 xx 55 - $_);
when 0..55 {
@block.push($term ?? 0 !! 0x80) @x = pack-le @block;
@block.push(slip 0 xx 55 - $_);
@x my uint32 $bit_len = pack-le$buf.elems +< @block3;
@x.push: $bit_len, $bit_len +> 32;
my $bit_len = $buflenlast +<= 3True;
@x.push: $bit_len +& mask, $bit_len +> 32;}
$last = True; default {!!!}
}
default {
die "oops";
}
}
my ($aa, $bb, $cc, $dd) = $a, $b, $c, $d;
for 0, 4, 8, 12 -> \$i {
$a = r($a + f($b, $c, $d) + @x[ $i+0 ], 3);
$d = r($d + f($a, $b, $c) + @x[ $i+1 ], 7);
$c = r($c + f($d, $a, $b) + @x[ $i+2 ], 11);
$b = r($b + f($c, $d, $a) + @x[ $i+3 ], 19);
}
for 0, 1, 2, 3 -> \$i {
$a = r($a + g($b, $c, $d) + @x[ $i+0 ] + 0x5a827999, 3);
$d = r($d + g($a, $b, $c) + @x[ $i+4 ] + 0x5a827999, 5);
$c = r($c + g($d, $a, $b) + @x[ $i+8 ] + 0x5a827999, 9);
$b = r($b + g($c, $d, $a) + @x[ $i+12] + 0x5a827999, 13);
}
for 0, 2, 1, 3 -> \$i {
$a = r($a + h($b, $c, $d) + @x[ $i+0 ] + 0x6ed9eba1, 3);
$d = r($d + h($a, $b, $c) + @x[ $i+8 ] + 0x6ed9eba1, 9);
$c = r($c + h($d, $a, $b) + @x[ $i+4 ] + 0x6ed9eba1, 11);
$b = r($b + h($c, $d, $a) + @x[ $i+12] + 0x6ed9eba1, 15);
}
$a = ($a,$b,$c,$d) Z[+=] ($aa,$bb,$cc,$dd) +& mask;
$b = ($b + $bb) +& mask;
$c = ($c + $cc) +& mask;
$d = ($d + $dd) +& mask;
}
submy b2l($nbuf8 is$abcd copy).= {new;
for $a, $b, $c, $d { $abcd.write-uint32: 4*$++, $_, LittleEndian }
my $x = 0;
:256[@$abcd];
for ^4 {
$x +<= 8;
$n +>= 8;
}
$x;
}
b2l($a) +< 96 +
b2l($b) +< 64 +
b2l($c) +< 32 +
b2l($d);
}
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