questions about bits and bytes

This may be a bit of a no brainer, but everything I have read sorta skips over this point. a bit is 1 or 0 8 bits make up a byte (0-255) If I have a 5 byte key, does that make it a 40 bit key? The only reason this doesn't make sense to me is it seems useless to use 5 byte keys, yet that is what companies export since the government limits keys to 40 bits. -- 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*',/((..)*)$/)