By the way, to forestall Clarice unblinding the cash received from Dave and
thus knowing the identity of the cash Alice gets, here's one option:
Alice provides the appropriate keys in an envelope Clarice encrypted to
Dave, such that Dave encrypts the blinded cash he sends back to Clarice.
Clarice cannot ever unblind this cash herself, as its locked in an envelope
only Alice can open.
Alice opens the envelope, unblinds the cash, deposits it.
Having multiple moneychangers accomplishes the same thing. Ian G. showed
this a couple of years ago.
--Tim May
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Timothy C. May | Crypto Anarchy: encryption, digital money,
ComSec 3DES: 831-728-0152 | anonymous networks, digital pseudonyms, zero
W.A.S.T.E.: Corralitos, CA | knowledge, reputations, information markets,
"Cyphernomicon" | black markets, collapse of governments.
