[crypto] Fwd: [risc-list] RISC at CWI (Wed May 3): Prof. Sanjam Garg (Berkeley and NTT Research)

[R. Hirschfeld]

-------- Original Message --------
Subject: [risc-list] RISC at CWI (Wed May 3): Prof. Sanjam Garg (Berkeley 
and NTT Research)
Date: 2023-04-26 12:23
 From: Serge Fehr <fehr at cwi.nl>
To: risc-list at cwi.nl

Dear Colleagues,

We cordially invite you to a RISC Seminar taking place

         * Wednesday May 3, 2023, from 16:00 *

in room L016 at CWI. The seminar features a talk by

         * Prof. Sanjam Garg (Berkeley and NTT Research) *

titled

         * hinTS: Threshold Signatures with Silent Setup *

Abstract:

In this talk, I will describe hinTS --- a new threshold signature scheme 
built on top of the widely used BLS signatures. This scheme achieves the 
following desirable features:
  - A silent setup process where the joint public key of the parties is 
computed as a deterministic function of their locally computed public 
keys.
  - Support for dynamic choice of thresholds and signers, after the 
silent setup, without further interaction.
  - Support for general access policies and native support for weighted 
thresholds with zero additional overhead over standard threshold 
setting.
  - Strong security guarantees, including proactive security and forward 
security.
This scheme is practical with aggregation time for 1000 signers under 
0.5 seconds, while both signing and verification are constant time 
algorithms, taking 1 ms and 17.5 ms, respectively. (Based on joint work 
with Abhishek Jain, Pratyay Mukherjee, Rohit Sinha, Mingyuan Wang, and 
Yinuo Zhang)

For more information, see our RISC webpage: 
https://projects.cwi.nl/crypto/risc.php

See you then and there!

Best regards,
Ronald Cramer and Serge Fehr
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