Secure two-party threshold ECDSA from ECDSA assumptions
The Elliptic Curve Digital Signature Algorithm (ECDSA) is one of the most widely used
schemes in deployed cryptography. Through its applications in code and binary …
schemes in deployed cryptography. Through its applications in code and binary …
Practical key-extraction attacks in leading MPC wallets
Multi-Party Computation (MPC) has become a major tool for protecting hundreds of billions
of dollars in cryptocurrency wallets. MPC protocols are currently powering the wallets of …
of dollars in cryptocurrency wallets. MPC protocols are currently powering the wallets of …
[PDF][PDF] LaKey: Efficient lattice-based distributed PRFs enable scalable distributed key management
M Geihs, H Montgomery - … USENIX Security Symposium, D. Balzarotti and …, 2024 - usenix.org
Distributed key management (DKM) services are multi-party services that allow their users to
outsource the generation, storage, and usage of cryptographic private keys, while …
outsource the generation, storage, and usage of cryptographic private keys, while …
Sometimes you can't distribute random-oracle-based proofs
We investigate the conditions under which straight-line extractable NIZKs in the random
oracle model (ie without a CRS) permit multiparty realizations that are black-box in the same …
oracle model (ie without a CRS) permit multiparty realizations that are black-box in the same …
Secure multiparty computation with identifiable abort via vindicating release
In the dishonest-majority setting, secure multiparty computation (MPC) with identifiable abort
(IA) guarantees that honest parties can identify and agree upon at least one cheating party if …
(IA) guarantees that honest parties can identify and agree upon at least one cheating party if …
FATF Travel Rule's Technical Challenges and Solution Taxonomy
Virtual assets are globally recognized as a decentralized digital currency system. They are
also being used to transfer criminal proceeds. In 2019, the Financial Action Task Force …
also being used to transfer criminal proceeds. In 2019, the Financial Action Task Force …
Exponent-VRFs and Their Applications
Verifiable random functions (VRFs) are pseudorandom functions with the addition that the
function owner can prove that a generated output is correct, with respect to a committed key …
function owner can prove that a generated output is correct, with respect to a committed key …
Batch Range Proof: How to Make Threshold ECDSA More Efficient
G Tang, S Han, L Lin, C Wei, Y Yan - Proceedings of the 2024 on ACM …, 2024 - dl.acm.org
With the demand of cryptocurrencies, threshold ECDSA recently regained popularity. So far,
several methods have been proposed to construct threshold ECDSA, including the usage of …
several methods have been proposed to construct threshold ECDSA, including the usage of …
Secure Multiparty Computation with Identifiable Abort via Vindicating
In the dishonest-majority setting, secure multiparty compu-tation (MPC) with identifiable
abort (IA) guarantees that honest parties can identify and agree upon at least one cheating …
abort (IA) guarantees that honest parties can identify and agree upon at least one cheating …
Direct Range Proofs for Paillier Cryptosystem and Their Applications
The Paillier cryptosystem is renowned for its applications in electronic voting, threshold
ECDSA, multi-party computation, and more, largely due to its additive homomorphism. In …
ECDSA, multi-party computation, and more, largely due to its additive homomorphism. In …