jerome at jeromebaum.com
Sat Dec 17 17:58:28 CET 2011
On 2011-12-17 17:04, MFPA wrote:
> On Saturday 17 December 2011 at 3:25:56 PM, in
> <mid:4EECB484.6080701 at jeromebaum.com>, Jerome Baum wrote:
>> I doubt the validity of those automated checks and
>> checks on the email anyway. What constitutes "owning"
>> foo at example.com?
> As far as that server's checking is concerned, being able to receive
> the email they send out to that address and respond to it or click a
Okay so we're assuming that "ownership" means being able to read mail
there. Given an attacker that cannot read mail for foo at example.com, if
that attacker uploads a key with UID foo at example.com, what value does
this verification have? If I don't verify the key, and send an encrypted
email to foo at example.com, the attacker presumably cannot read the
message anyway. So then I wouldn't even need to encrypt it. So then the
key is useless for encryption. So is the check also.
For signing, well I don't usually care that "some person who was at a
point or currently is able to receive or intercept emails sent to
foo at example.com signed this message", I usually care that "John Smith
signed it". But let's assume I care whether something really originated
with a person that was or is able to read email to foo at example.com, how
is this more useful than just emailing them to confirm?
i.e. IMO emails on UIDs are bullshit. So are certification policies that
say (or don't say but enforce anyway) that you must have an email on
your UID. Why refuse to certify _less_ information?
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"Apple" and "i<Anything>" are trademarks of Apple Inc., co., or
something like that. "Orange" is probably a trademark of someone else as
well. "Peach" is probably the trademark of the guys who trademarked
"Orange", or maybe it's Apple's trademark. Who's in for a bet that
"T-<anything>", "z<Anything>", "y<Anything>" and "x<Anything>" are also
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Do not operate this disclaimer if you are prohibited from doing so.
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