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- Path: comma.rhein.de!serpens!not-for-mail
- From: mlelstv@serpens.rhein.de (Michael van Elst)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: Key File Programming
- Date: 16 Feb 1996 12:01:12 +0100
- Organization: dis-
- Message-ID: <4g1o5o$c53@serpens.rhein.de>
- References: <4f9kvp$m70@rock101.genie.net> <588.6611T1313T530@datashopper.dk> <4fbg4q$ndr@ra.nrl.navy.mil> <1161.6618T1423T2585@wvlink.mpl.com>
- NNTP-Posting-Host: serpens.rhein.de
-
- gene_heskett@wvlink.mpl.com (Gene Heskett) writes:
-
- >I think a small correction is in order here. Does the PGP code not use the
- >idea encryption? That was busted, prolly a year back,
-
- I think "busted" is the wrong term. Any code can be "busted" but the time
- necessary depends on the number of key bits and of course the computer
- technology.
-
- That's why the US allow export of DES technology with 40 (?) bit keys because
- these can be "busted" with a reasonably small effort.
-
- But the IDEA key uses 128 bits and currently you have no method nor technology
- to crack it.
-
- What _was_ cracked was the RSA encoding used to transmit the IDEA key. But
- what was cracked was the equivalent to a 429 bit key and it took a pretty
- huge effort. Many people use a 512 bit key that needs about 100 times the
- computing power (and with current technology that means: hundreds of years
- if you can't afford a few hundred super computers.).
-
- That's why people switch to 768 bit or 1024 bit keys as the 512 bit key
- might be broken with the technology of the year 2010.
-
- >yes, the combined power of the machines that cracked it would handily beat
- >the Cray.
-
- Yes. But who can devote a dozen Crays for a year to cracking a _single_ key ?
-
- --
- Michael van Elst
-
- Internet: mlelstv@serpens.rhein.de
- "A potential Snark may lurk in every tree."
-