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(formerly Perl 6)
<syntaxhighlight lang="raku" line>sub md4($str) {
my @buf8 $buf .= new: $str.ordsencode;
my $buflenbuf-length = @$buf.elems;
@block$buf.push (: 0x80 ); ▼ $buf.push: 0 until ($buf - (448 div 8)) %% (512 div 8);
$buf.write-uint64: $buf.elems, $buf-length*8, LittleEndian;
my \mask(&f, =&g, (1&h, +< 32&r) -= 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 },
# for some reason we have to type v here
my &r = -> uint32 $v, $s { (($v +< $s) +& mask) +| (($v +& mask) +> (32 - $s)) }
my uint32 ($a, $b, $c, $d) = 0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476; ▼ sub pack-le (@a) {
gather for @a -> $a,$b,$c,$d { take $d +< 24 + $c +< 16 + $b +< 8 + $a }
for @$buf.rotor(64) {
▲ my ($a, $b, $c, $d) = 0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476;
my uint32 @x = .rotor(4).map: {:256[.reverse]}
my $term = False;
my $last = False;
repeat until $last {
my @block = @buf[$off..$off+63]:v; $off += 64;
given +@block {
when 64 {
@x = pack-le @block;
}
when 56..63 {
$term = True;
@block.push(slip 0 xx 63 - $_);
@x = pack-le @block;
}
when 0..55 {
@block.push($term ?? 0 !! 0x80);
@block.push(slip 0 xx 55 - $_);
@x = pack-le @block;
my $bit_len = $buflen +< 3;
@x.push: $bit_len +& mask, $bit_len +> 32;
$last = True;
}
default {
die "oops";
}
}
my ($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;
blob8.new: $abcd;
for ^4 {
$x +<= 8;
$x += $n +& 0xff;
$n +>= 8;
}
$x;
}
b2l($a) +< 96 +
b2l($b) +< 64 +
b2l($c) +< 32 +
b2l($d);
}
sub MAIN {
my $str = 'Rosetta Code';
say md4($str).base(16).lc;
}</syntaxhighlight>
{{out}}
<pre>Blob[uint8]:0x<A5 2B CF C6 A0 D0 D3 00 CD C5 DD BF BE FE 47 8B></pre>
<pre>a52bcfc6a0d0d300cdc5ddbfbefe478b</pre>
=={{header|Ruby}}==
|