Privacy-Preserving Holder Binding

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Maybe there is another option: BBS#

[bjafs]

Thanks for the link. As you might have seen in our Technical Roadmap we have a specific section on privacy preserving holder-binding.
We will gladly take a look at the link you shared with us and the corresponding paper. Is there any open-source implementation yet which you could refer us to?

Best Regards,

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Yes, we have seen this section about "privacy-preserving holder binding" and this is exactly the reason why we posted this.
We have implemented the protocol on Android Strongbox for now but unfortunately don't have an open-source implementation yet. However, given the amount of requests we get, we are working on a reference implementation.
In the meantime, you can have a look at what dock.io have done (it's basically a partial implementation of BBS# based on a paper we co-authored in 2016). We also noticed that Christian Khalo seems to have implemented it successfully.
Finally, another link that might clarify a few things in terms of privacy-preserving holder binding.
I hope you will find all that interesting.

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Hello,
The dock.io partial implementation we were referring to before is quickly growing into a full blown implementation. Please see here and don’t hesitate to ask for more details if needed.

[bit-jniestroj]

Thank you for the heads up about the dock.io implementation. We will have a deeper look into it.

Best Regards

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Hello,
Did you have the opportunity to look into it ?

[bjafs]

Hey there,
Due to absences, we can’t provide a detailed feedback yet. We will get back to you in due course.
Best Regards