Paper 2022/1255
PLUME: An ECDSA Nullifier Scheme for Unique Pseudonymity within Zero Knowledge Proofs
, Massachusetts Institute of Technology, 0xPARCAbstract
ZK-SNARKs (Zero Knowledge Succinct Noninteractive ARguments of Knowledge) are one of the most promising new applied cryptography tools: proofs allow anyone to prove a property about some data, without revealing that data. Largely spurred by the adoption of cryptographic primitives in blockchain systems, ZK-SNARKs are rapidly becoming computationally practical in real-world settings, shown by i.e. tornado.cash and rollups. These have enabled ideation for new identity applications based on anonymous proof-of-ownership. One of the primary technologies that would enable the jump from existing apps to such systems is the development of deterministic nullifiers. Nullifiers are used as a public commitment to a specific anonymous account, to forbid actions like double spending, or allow a consistent identity between anonymous actions. We identify a new deterministic signature algorithm that both uniquely identifies the keypair, and keeps the account identity secret. In this work, we will define the full DDH-VRF construction, and prove uniqueness, secrecy, and existential unforgeability. We will also demonstrate a proof of concept of our Pseudonymously Linked Unique Message Entity (PLUME) scheme.
Note: Edited some wordings and added PLUME to the title
Metadata
- Available format(s)
-
PDF
- Category
- Cryptographic protocols
- Publication info
- Preprint.
- Keywords
- zero knowledgezk proofnullifierddh-vrfvrfpseudonymityethereumbitcoinecdsasecp256k1plumesignature
- Contact author(s)
-
aayushgupta @ mit edu
kobi @ geometryresearch xyz - History
- 2023-03-27: last of 4 revisions
- 2022-09-21: received
- See all versions
- Short URL
- https://ia.cr/2022/1255
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2022/1255,
author = {Aayush Gupta and Kobi Gurkan},
title = {{PLUME}: An {ECDSA} Nullifier Scheme for Unique Pseudonymity within Zero Knowledge Proofs},
howpublished = {Cryptology {ePrint} Archive, Paper 2022/1255},
year = {2022},
url = {https://eprint.iacr.org/2022/1255}
}
