[hashcash] Re: Hi!
- From: Atom Smasher <atom@xxxxxxxxxxx>
- To: hashcash@xxxxxxxxxxxxx
- Date: Fri, 26 May 2006 15:35:21 -0400 (EDT)
On Fri, 26 May 2006, Máté Soós wrote:
The problem with BCC, as far as I can see, is that the X-HASH value must
contain the email address of the BCC recipient, which needs to be
hidden. In theory, we could use some sort of masking of this email
address. And if we are at hashes, why not use them (after all, they are
one-way, not only 2nd-preimage-resistant). So, hash the address, and use
that(or some first bytes of that) instead of the email string. We are
done - hmm, well, almost. Except that if the person thinks that the
email might have been sent to someone he knows the email address of, he
could check. Well, nothing is perfect.What do you think?
============================
i'm using my own scripts to implement stamping outgoing mail. any address
that's BCCd will generate a stamp that only goes to that particular blind
recipient.
let's say i address an email:
To: alice
CC: bob, charlie
BCC: diane, eric
ALL recipients will see stamps for alice, bob and charlie. only diane will
see a stamp for diane; and only eric will see a stamp for eric.
--
...atom
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"When the President does it, that means that it's not illegal."
-- Richard M. Nixon, 19 May 1977
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