On Mon, Aug 21, 2000 at 09:37:05PM +0700, Oskar Sandberg wrote: > On Mon, Aug 21, 2000 at 09:21:04AM -0400, Travis Bemann wrote: > > On Mon, Aug 21, 2000 at 05:02:25PM +0300, Henry Hemming wrote: > > > > Use 256 bit symmentric encryption and 4096 asymetric, that should be > > > > safe even if they "they" have quantum computers (well, as long as > > > > they are smaller then 4096 qubits). > > > So, if you take a look at the development of quantum computers sofar, > > > their size follows pretty nicely moore's law, so assuming the current > > > trend continues we will reach 4096 quantum bit computers aprox in 24 > > > years. > > > > > > Therefore we indeed should leave room for crypto update in freenet :-) > > > > They assumed that it would be fixed later when they wrote software > > that used 2 digits for years. Even though Y2K didn't turn out to be > > what it was cracked up to be, they should have used at least 8 bits if > > not 16 or 32 bits to store years. > > That is not comparable. The threat of quantum computers, if they can > really grow exponential speeds, makes current asymetric ciphers completely > useless. Sure, we could go with 16384 bit keys and sit an wait for half an > hour while our nodes handshake, just to give us 26 years instead of 22. > > The fact is we HAVE to hope that this will get fixed later (or that the > threat is not as bad as it's cracked out to be - which is the worse > alternative since there are many good uses for quantum computing), or we > simply can't use asymetric ciphers at all.
Actually, quantum computer cannot crack one-time-pad encryption. If they try to crack one-time-pad encrypted data, the will end up producing *all possible blocks of data* which are of the same length as the encrypted data. Quantum computers turn the infinite monkeys smashing on keyboards into reality. -- Travis Bemann Sendmail is still screwed up on my box. My email address is really bemann at execpc.com. -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 1804 bytes Desc: not available URL: <https://emu.freenetproject.org/pipermail/devl/attachments/20000821/89290e4c/attachment.pgp>
