key bit lengths

In Applied Crypto, it talks about thermodynamic limitations of brute force attacks. I did some calculations and it looks like it will take, given a perfectly effecient computer, the combined energy of 509,485,193 average supernovas to brute force a 256 bit key. I was just wondering if there are any theoretical ways around this. I am just talking about plain brute force here, not attacking other weaknesses. -- thecrow@iconn.net "It can't rain all the time" RSA ENCRYPTION IN 3 LINES OF PERL --------------------------------------------------------- #!/bin/perl -sp0777i<X+d*lMLa^*lN%0]dsXx++lMlN/dsM0<j]dsj $/=unpack('H*',$_);$_=`echo 16dio\U$k"SK$/SM$n\EsN0p[lN*1 lK[d2%Sa2/d0$^Ixp"|dc`;s/\W//g;$_=pack('H*',/((..)*)$/)