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Attacks to deployed threshold signatures

November 6, 2020


Jean-Phillippe Aumasson - ZenGo
Omer Shlomovitz - Taurus


Abstract: Threshold wallets leverage threshold signature schemes (TSS) to distribute signing rights across multiple parties when issuing blockchain transactions. These provide greater assurance against insider fraud, and are sometimes seen as an alternative to methods using a trusted execution environment to issue the signature. This talk describes the authors’ experience with building and analyzing TSS technology, notably the finding of attacks on TSS implementations used by leading organizations such as major exchanges.

Presented at

NIST Workshop on Multi-Party Threshold Schemes (MPTS) 2020.

Event Details



Related Topics

Security and Privacy: cryptography

Created May 04, 2021, Updated June 07, 2021