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Privacy-Friendly Monero Transaction Signing on a Hardware Wallet

Abstract : Keeping cryptocurrency spending keys safe and being able to use them when signing a transaction is a well-known problem, addressed by hardware wallets. Our work focuses on a transaction signing process for privacy-centric cryptocurrency Monero, in the hardware wallets. We designed, implemented, and analyzed a privacy-preserving transaction signing protocol that runs on a hardware wallet and protects the spending keys. Moreover, we also implemented a privacy-preserving multi-party version of the Bulletproof zero-knowledge prover algorithm, which runs on a hardware wallet with constant memory. We present the protocols and evaluate their performance on a real hardware wallet.
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Conference papers
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Submitted on : Monday, November 22, 2021 - 3:31:37 PM
Last modification on : Monday, November 22, 2021 - 4:37:55 PM
Long-term archiving on: : Wednesday, February 23, 2022 - 7:56:34 PM


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Dusan Klinec, Vashek Matyas. Privacy-Friendly Monero Transaction Signing on a Hardware Wallet. 35th IFIP International Conference on ICT Systems Security and Privacy Protection (SEC), Sep 2020, Maribor, Slovenia. pp.338-351, ⟨10.1007/978-3-030-58201-2_23⟩. ⟨hal-03440818⟩



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