Re: invalid gpg key revocation

2012-03-05 Thread Daniel Kahn Gillmor
On 03/05/2012 04:36 PM, Ingo Klöcker wrote: > 4. He has left his laptop unlocked and unattended for a very short > period of time and he is using gpg-agent with a cache-ttl > 0. > > I have verified that one can generate a revocation certificate without > entering a passphrase if one has previou

Re: invalid gpg key revocation

2012-03-05 Thread Hauke Laging
Am Montag, 5. März 2012, 22:36:42 schrieb Ingo Klöcker: > I have verified that one can generate a revocation certificate without > entering a passphrase if one has previously signed something (e.g. an > email). So, it was probably just a very nasty prank. I assume that ist possible only if the ma

Re: invalid gpg key revocation

2012-03-05 Thread Ingo Klöcker
On Sunday 04 March 2012, Robert J. Hansen wrote: > On 3/4/2012 4:13 PM, auto15963...@hushmail.com wrote: > > Hello. Supposing I create a key with an arbitrary user ID... > > This seems to me to be a simple question wrapped up in a lot of > unnecessarily specific details: "How is it possible for a

Re: invalid gpg key revocation

2012-03-05 Thread Hauke Laging
Am Montag, 5. März 2012, 18:12:24 schrieb auto15963...@hushmail.com: > I am 99.9% sure no one has gotten access to my machine or my keys. IMHO that requires at least that 1) you have generated the key in a secure environment, i.e. a) booted from a safe medium b (really) validated

Re: invalid gpg key revocation

2012-03-05 Thread David Shaw
On Mar 5, 2012, at 12:12 PM, auto15963...@hushmail.com wrote: > I am 99.9% sure no one has gotten access to my machine or my keys. > If they had, I have to believe that there would have been more > damage done than this, and that does not appear to have happened. I > mention the details, which

Re: invalid gpg key revocation

2012-03-05 Thread Daniel Kahn Gillmor
On 03/05/2012 12:12 PM, auto15963...@hushmail.com wrote: > I am 99.9% sure no one has gotten access to my machine or my keys. > If they had, I have to believe that there would have been more > damage done than this, and that does not appear to have happened. I > mention the details, which may se

Re: invalid gpg key revocation

2012-03-05 Thread Robert J. Hansen
On 3/5/12 12:12 PM, auto15963...@hushmail.com wrote: > I am 99.9% sure no one has gotten access to my machine or my keys. Whenever anyone ascribes 99.9% certainty to a belief, my knee-jerk reaction is to think the only 99.9% certainty is they've got the wrong confidence interval. :) There are re

Re: invalid gpg key revocation

2012-03-05 Thread auto15963931
I am 99.9% sure no one has gotten access to my machine or my keys. If they had, I have to believe that there would have been more damage done than this, and that does not appear to have happened. I mention the details, which may seem irrelevant, only because sometimes the devil is in the detail

Re: Master signing key length

2012-03-05 Thread Robert J. Hansen
On 3/5/2012 2:21 AM, Jon Molesa wrote: > Does master signing key length have any effect on the length of > sub-keys? Yes, no and maybe. Yes: if a 1024-bit master signing key can be compromised, there's nothing to prevent the attacker from revoking your 4k subkeys and adding new 4k subkeys the att