- + With all the current interest in personal data ownership, there + is a growing need for better security, freedom and control for + online users. Along with this, a counter-movement of + decentralized applications where no single entity controls the + system has started to grow. Over the two last decades many + distributed (cryptographic) schemes have been designed and + deployed in the real world in the quest to build a decentralized + web. +
++ Although these topics are discussed in the literature (e.g. + threshold cryptographic schemes), most current solutions lack + the robustness necessary for real-world usage: many protocols + require that any failure results in restarting the process and + consequently the threshold may need to be changed. +
++ The goals of this workshop are to review the state-of-the-art + research and practices, discuss existing challenges in terms of + security and performance, and to trigger new research directions + to tackle the challenges. +
++ Topics such as distributed key generation, threshold + cryptography, and multiparty computation will be presented in + the workshop and in a concluding panel issues such as setups, + robustness, and reconfigurability of cryptographic schemes when + they are deployed in decentralized real-world conditions will be + discussed. +
With all the current interest in personal data ownership, there is a growing need for better security, freedom and control for online users. Along with this, a counter-movement of decentralized applications where no single entity controls the system has started to grow. Over the two last decades many distributed (cryptographic) schemes have been designed and deployed in the real world in the quest to build a decentralized web.
-Although these topics are discussed in the literature (e.g. threshold cryptographic schemes), most current solutions lack the robustness necessary for real-world usage: many protocols require that any failure results in restarting the process and consequently the threshold may need to be changed.
-The goals of this workshop are to review the state-of-the-art research and practices, discuss existing challenges in terms of security and performance, and to trigger new research directions to tackle the challenges.
-Topics such as distributed key generation, threshold cryptography, and multiparty computation will be presented in the workshop and in a concluding panel issues such as setups, robustness, and reconfigurability of cryptographic schemes when they are deployed in decentralized real-world conditions will be discussed.
-Organizers
-
- Aniket Kate - Purdue University
- Fatemeh Shirazi - Web3 Foundation
-
Event Information
-
- Registration: The workshop will take place online. Attendance to the workshop is free of charge
- Date: January 15, 2021
-
Organizers
+
+ Aniket Kate - Purdue University
+ Fatemeh Shirazi - Web3 Foundation
+
Event Information
+
+ Registration: The workshop will take place online. Attendance to
+ the workshop is free of charge
+ Date: January 15, 2021
+
Tentative Schedule (all times are in CET)
+Tentative Schedule (all times are in CET)
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-
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- 3:00 pm — 3:15 pm-Aniket Kate and Fatemeh Shirazi-Introduction and Organization-Purdue University, Web3 Foundation-
-
-
- 3:15 pm — 3:45 pm-Omer Shlomovits-Baby Sharks: small subgroup attacks on DKG implementations-ZenGo X---Abstract---
We will show how injecting small order subgroup elements can bypass security for cryptographic primitives used in DKGs such as VSS and sigma protocols. We discuss the potential damage of our attacks on applications such as consensus and random beacon.
---Watch video---- --
- -
- 3:45 pm — 4:15 pm-Jeffrey Burdges-Verifiable Luck-Web3 Foundation---Abstract---
As reusable PRFs, VRFs provide a wondrous flexibility for distributed systems. We give an applied perspective on verifiable random functions (VRFs), including fun examples, intuition for proper usage, miss-use resistance, and implementation.
---Watch video---- --
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- 4:15 pm — 4:45 pm-Eleftherios Kokoris-Kogias-Asynchronous Distributed Key Generation for Computational Secure Randomness, Consensus and Threshold Signatures-IST Austria & Novi Research---Abstract---
Asynchronous Distributed Key Generation (ADKG) algorithm is the first algorithm that generates cryptographic keys with a dual (f, 2f+1)-threshold. ADKG removes the trusted setup that consensus and MPC protocols need.
---Watch video---- --
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- 4:45 pm — 5:15 pm-Mary Maller-Aggregatable Distributed Key Generation-Ethereum Foundation---Abstract---
We present a distributed key generation protocol with aggregatable and publicly-verifiable transcripts that reduces the size of the final transcript and time to verify by leveraging gossip rather than all-to-all communication.
---Watch video---- --
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- 5:15 pm — 5:45 pm-Alin Tomescu-Towards Scalable Threshold Cryptosystems-VMware Research---Abstract---
We will present new techniques for authenticating polynomial evaluations that help scale threshold signature schemes, verifiable secret sharing and distributed key generation protocols to hundreds of thousands of participants and beyond.
---Watch video---- --
- -
- 5:45 pm — 7:00 pm-Panel - Decentralized Cryptography: A Distant Dream or an Immediate Possibility?-Ittai Ibrahim-VMware Research-Andrew Miller-University of Illinois, Urbana-Champaign-Christian Cachin-University of Bern-Harry Halpin-Nym Technologies-Host: Aniket Kate-Purdue University---Watch video---- --
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- 7:00 pm — 7:05 pm-Fatemeh Shirazi, Aniket Kate-Closing Remarks-Web3 Foundation, Purdue University-
-
-
+
-
+ 3:00 pm — 3:15 pm++ Aniket Kate and Fatemeh Shirazi +++ Introduction and Organization +++ Purdue University, Web3 Foundation ++
+
-
+ 3:15 pm — 3:45 pm+Omer Shlomovits++ Baby Sharks: small subgroup attacks on DKG implementations ++ZenGo X++-Abstract++-
+ We will show how injecting small order subgroup elements + can bypass security for cryptographic primitives used in + DKGs such as VSS and sigma protocols. We discuss the + potential damage of our attacks on applications such as + consensus and random beacon. +