17 Dec
2003
17 Dec
'03
11:17 p.m.
Bill Stewart <stewarts@ix.netcom.com> writes:
... but there's also really no need for keys longer than 2048 bits unless some radical algorithmic breakthrough happens. (Computer hardware breakthroughs aren't relevant; the exponential behaviour of the algorithms mean that a few extra bits makes any device that fits on the planet still too small.) 1024 bits is probably enough, but maybe not, depending on how long you need to keep something secret and how much technology improves doing your lifetime.
Sorry, but computer hardware performance is increasing exponentially, but the difficulty of factoring is subexponential in the length of the number.