RE: [SLUG] Erasing backup tapes?

From: Craig Zeigler (craig@penguindevelopment.com)
Date: Thu Jun 06 2002 - 10:35:19 EDT


I have to agree.... Unless someone is truly out to get you.. Fire is a
very tough thing to recover data from. Besides, it's a lot more fun that
any other alternative I can think of (other than chemical fun)

-----Original Message-----
From: Ryland Bingham [mailto:ryland@t3t.com]
Sent: Wednesday, June 05, 2002 12:18 PM
To: slug@nks.net
Subject: Re: [SLUG] Erasing backup tapes?

dd if=/dev/urandom of=/dev/st0

But if you're defense-contractor paranoid, then a sledge hammer and
lighter-fluid works best.

In a former life I killed many a hardrive and memory module.

On Wed, 2002-06-05 at 10:35, Derek Glidden wrote:
> On Wed, 2002-06-05 at 09:03, Ben Ostrowsky wrote:
>
> > I've been told that writing from /dev/urandom until the tape fills
up
> > would do the trick, but I don't even know how to do that!
>
> cat /dev/urandom > /dev/st0
>
> or even
>
> tar cf /dev/st0 /dev/urandom
>
> I like the latter as it will make it look like there's something there
> if someone does decide to take a look. Let 'em try to break the
> encryption on it... ;)
>
> FWIW - why are you throwing them out? Do they no longer work
> correctly? DDS1/2/3? I have a DDS2 DAT drive that I'm always looking
> for more tapes...
>
> --
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> #!/usr/bin/perl -w
> $_='while(read+STDIN,$_,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[--$h+84])}@ARGV;s/...$/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))for@a[128..$#a]}
> print+x"C*",@a}';s/x/pack+/g;eval
>
> usage: qrpff 153 2 8 105 225 < /mnt/dvd/VOB_FILENAME \
> | extract_mpeg2 | mpeg2dec -
>
> http://www.cs.cmu.edu/~dst/DeCSS/Gallery/
> http://www.eff.org/ http://www.anti-dmca.org/
>
>

-- 
Ryland Bingham
Unix/Linux Specialist
T3 Technologies-An IBM Premier Business Partner
St. Petersburg, Florida



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