Firewall Wizards mailing list archives
Re: R: strong encryption for Europeans
From: Chris Lonvick <clonvick () cisco com>
Date: Mon, 24 Nov 1997 22:24:30 -0600
Hello Ming, They were not exactly attacks. These were a set of challenges offered by RSA Labs (with prizes). http://www.rsa.com/rsalabs/97challenge/ http://www.rsa.com/rsalabs/97challenge/html/status.html http://www.frii.com/~rcv/deschall.htm (winner of DES) http://rc5.distributed.net/ (winner of RC5-32/12/7) For those that don't wish to follow the URLs, Challenge time to crack Prize RC5-32/12/5 (40bit key) 3.5 hrs US$ 1,000. RC5-32/12/6 (48bit key) 313 hrs US$ 5,000. DES (56bit key) 140 days US$10,000. RC5-32/12/7 (56bit key) 265 days US$10,000. (And there's US$90,000. in prize money left in the other challenges.) Later, Chris Lonvick Cisco Systems Corporate Consulting Houston, TX, USA +1.713.778.5663 At 06:03 PM 11/24/97 -0500, Ming Lu wrote:
Franco: I would like to see reports reagding these successful attacks. I could not find them at CERT. TIA. On Mon, 24 Nov 1997, Franco RUGGIERI wrote:Recently (June and October this year), attacks have been successfully accomplished against DES and RC5 65 bit, by a huge number of computers coordinated via Internet. Since participation in such effort was voluntary, I wouldn't define such coordination as *strict*. Thus, we can assume that a well determined organization would break codes based on keys up to 56 bit in a reasonable amount of time. Therefore I wouldn't recommend VPNs based on such systems (RCx, DES and the likes with *short*keys), unless for what I would dub *minor areas* and for not long lasting applications. This, of course, IMHO. I would appreciate comments (not flames!) on this viewpoint of mine. ------------------------------- Franco RUGGIERI fruggieri () selfin net[snip] _ming
Current thread:
- R: strong encryption for Europeans Franco RUGGIERI (Nov 24)
- Re: R: strong encryption for Europeans Andreas Siegert (Nov 25)
- Re: R: strong encryption for Europeans Adam Shostack (Nov 25)
- Re: R: strong encryption for Europeans Perry E. Metzger (Nov 25)
- Re: R: strong encryption for Europeans Adam Shostack (Nov 25)
- Re: R: strong encryption for Europeans Adam Shostack (Nov 25)
- Re: R: strong encryption for Europeans Martin W Freiss (Nov 25)
- Re: R: strong encryption for Europeans Andreas Siegert (Nov 25)
- Re: R: strong encryption for Europeans Arjo Mukherjee (Nov 25)
- Re: R: strong encryption for Europeans Bennett Todd (Nov 25)
- Re: R: strong encryption for Europeans Ted Doty (Nov 25)
- <Possible follow-ups>
- Re: R: strong encryption for Europeans Chris Lonvick (Nov 24)
- Re: R: strong encryption for Europeans lum (Nov 25)
- Re: R: strong encryption for Europeans Bennett Todd (Nov 25)
- Re: R: strong encryption for Europeans lum (Nov 25)