multi-party-schnorr icon indicating copy to clipboard operation
multi-party-schnorr copied to clipboard

Published 20 hours ago • verified publisher icon ZenGo-X

Schnorr Blind Signature support?

Open Kelbie opened this issue 4 years ago • 5 comments

Is there any support or planned support of Schnorr Blind Signatures?

Kelbie avatar Sep 28 '19 23:09 Kelbie

Good idea, do you have a specific protocol ?

omershlo avatar Sep 29 '19 06:09 omershlo

I am working on implementing the Statechains protocol which requires Blind Schnorr so it would have to be compatible with bip-schnorr.

~~This thread may be of interest to anyone implementing the blinding.~~ Edit: turns out the way they did it in Wasabi was not compatible with bip-schnorr.

Kelbie avatar Sep 29 '19 09:09 Kelbie

Relevant thread on StackExchange about implementing blind schnorr that is compatible with bip-schnorr. Note that Greg Maxwell said that this implementation is insecure.

Kelbie avatar Oct 04 '19 13:10 Kelbie

thanks. I asked in the telegram group if someone wants to take this issue. let's see/ And - if Greg Maxwell says its insecure : it's insecure :)

omershlo avatar Oct 04 '19 13:10 omershlo

There is an easy fix to the Wagner attacks in https://eprint.iacr.org/2019/877.pdf but not sure if/when adaptor signatures are secure, and I'm not sure when schnorr blind signatures really make sense.

burdges avatar Dec 22 '19 13:12 burdges