Threshold Signatures with Private Accountability
Threshold Signatures with Private Accountability
In this work, we present a new type of threshold signature scheme that provides both privacy and accountability for signers. We refer to this scheme as a TAPS. A TAPS preserves privacy for signers and the threshold to the outside world, but allows for signer accountability only to a designated tracing entity. More generally, TAPS provides post-compromise accountability for threshold signature schemes while otherwise preserving privacy, filling a space that before was unmet in the literature.
About the speaker
PhD Candidate, University of Waterloo; Principal Researcher, Zcash Foundation
Chelsea Komlo is a cryptography and privacy researcher. Currently, she is a member of the Cryptography, Security, and Privacy lab at the University of Waterloo, and also works as a principal researcher for the Zcash Foundation. Her current research interests involve multi-party zero-knowledge schemes in both a classical and post-quantum setting, including threshold signatures.
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