Re: Double-blinding

Subject: Re: Double-blinding
From: David Wagner (dawCS.Berkeley.EDU)
Date: Thu Dec 16 1999 - 10:40:57 CST

• Next message: mortgage12yahoo.com: "Low Cost Mortgage Loans"
• Previous message: DiShWiZaRd (Cardcleaning Services): "Randomizing Clocks on Smart Cards"
• In reply to: lcs Mixmaster Remailer: "Re: Double-blinding"
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

In article <19991216032030.10728.qmailnym.alias.net>,
lcs Mixmaster Remailer <mixanon.lcs.mit.edu> wrote:
> The escape with respect to Wagner blinding is that the patent covers
> blind signatures, not blind everything. It's not entirely clear what the
> Wagner technique blinds (David Wagner called it a blind Diffie-Hellman
> exchange, but that doesn't seem quite right); but it is very arguably
> not a blind signature.

Right. Calling it a blind Diffie-Hellman exchange was a misnomer.
I suspect it's probably better to think of it as a blinded MAC: that
emphasizes the symmetric-key (rather than public-key) nature of the
scheme. Thus the hope that Chaum's patent covers only the blinding
of public-key cryptosystems (specifically, public-key signatures).

• Next message: mortgage12yahoo.com: "Low Cost Mortgage Loans"
• Previous message: DiShWiZaRd (Cardcleaning Services): "Randomizing Clocks on Smart Cards"
• In reply to: lcs Mixmaster Remailer: "Re: Double-blinding"
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

This archive was generated by hypermail 2b27 : Thu Dec 16 1999 - 13:18:20 CST