Re: Crypto codes #1

From: charlie strauss <cems_at_earthlink_dot_net>
Date: Thu May 19 2005 - 13:36:36 CDT

I'm not sure I understood the entire context of the discussion but one thing cuaght my eye:

"2) Each ballot contains (as printed strings or in a barcode):
> for bv = ballot-id + vote-string:
> e = encrypt(k, hash(bv))
> print bv + hash(bv) + e
> (3) At finalization, k is revealed publicly.

If the hash function is known or knowable does not this reveal you ballot and provide a effective receipt? That is to say it's going to be fairly trivial, by crypto standards to invert the hash of a ballot string I would suspect.

Perhaps this relies on the hash function being machine specific and undiscoverable? is the point that the machine can determine if a ballot came from it even if it has no record of the vote? This seems like a odd thing to want.

please explain what the objective is and how its' different than VOTEHERE.

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Received on Tue May 31 23:17:42 2005

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