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[Taler] BBS+ blind signatures relevant?

From: Schanzenbach, Martin
Subject: [Taler] BBS+ blind signatures relevant?
Date: Wed, 29 Sep 2021 10:27:23 +0000


in our DISSENS project [1] we investigated BBS+ signatures on BLS12-381 as a 
state of the art method for privacy credentials (specifically selective 
We therefore built a C/C++ implementation for such a scheme.
For some time now there has been an effort to standardise the signatures [2] 
and maybe this is relevant to Taler as well?
I know that you are looking into blind Schnorr signatures, which are likely to 
be more efficient than BBS+ as those are pairing-based.
I also do not know if BBS+ signatures can actually be used in the way Taler 
needs blind signatures.

Anyway, may be worth checking out; I am following the standardisation efforts 
in case we want to follow the standards for our library and, eventually, 


[1] https://gnunet.org/en/news/2021-05-DISSENS.html
[2] https://identity.foundation/bbs-signature

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