Re: [PERL] Re: DeCSS anyone?

[sslug@sslug (Henrik Størner)]

In <sslug@sslug> Ole Tange <sslug@sslug> writes:

>On Thu, 8 Mar 2001, Joergen Ramskov wrote:

>> Det er på /. her: http://slashdot.org/article.pl?sid=01/03/06/1954213
>> 
>> Inkl. de 7 liniers perl kode.

>Perl Rules:

>#!/usr/bin/perl -w
># 531-byte qrpff-fast, Keith Winstein and Marc Horowitz<sslug@sslug>
># MPEG 2 PS VOB file on stdin -> descrambled output on stdout
># arguments: title key bytes in least to most-significant order
>$_='while(read+STDIN,$_,2048){$a=29;$b=73;$c=142;$t=255;@t=map{$_%16or$t^=$c^=(
>$m=(11,10,116,100,11,122,20,100)[$_/16%8])&110;$t^=(72,@z=(64,72,$a^=12*($_%16
>-2?0:$m&17)),$b^=$_%64?12:0,@z)[$_%8]}(16..271);if((@a=unx"C*",$_)[20]&48){$h
>=5;$_=unxb24,join"",@b=map{xB8,unxb8,chr($_^$a[--$h+84])sslug@sslug;s/...$/1$&/;$
>d=unxV,xb25,$_;$e=256|(ord$b[4])<<9|ord$b[3];$d=$d>>8^($f=$t&($d>>12^$d>>4^
>$d^$d/8))<<17,$e=$e>>8^($t&($g=($q=$e>>14&7^$e)^$q*8^$q<<6))<<9,$_=$t[$_]^
>(($h>>=8)+=$f+(~$g&$t))sslug@sslug"C*",@a}';s/x/pack+/g;eval

>YES! Lige min stil :-)

Det vil sige at vi snart kan forvente et foredrag med titlen

   "Perl 7-liners" starring Ole Tange

:-))
-- 
Henrik Storner      | "ATA100 is another testimony to the fact that 
<sslug@sslug> |  pigs can be made to fly given sufficient thrust"
                    | 
                    |          Linux kernel hacker Alan Cox, on IDE drives