GnuPG private key resilience against off-line brute-force attacks (was: Re: Backup of private key)

John Clizbe John at
Sat Nov 28 19:03:27 CET 2009

Robert J. Hansen wrote:
> David Shaw wrote:
>> Difficult question to answer, since everyone is going to wave around
>> their opinion. :)
> There are some empirical facts which may be useful, though -- like
> observing the RC5-64 project was able to break a 64-bit key via a
> massive distributed project that took 18 months of runtime.

And estimates for RC5-72 including Moore's Law effects were hovering at 18 years.

John P. Clizbe                      Inet:John (a)
You can't spell fiasco without SCO. hkp://  or
     mailto:pgp-public-keys at

Q:"Just how do the residents of Haiku, Hawai'i hold conversations?"
A:"An odd melody / island voices on the winds / surplus of vowels"

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