Cryptology ePrint Archive: Report 2022/265

Non-interactive Mimblewimble transactions, revisited

Georg Fuchsbauer and Michele OrrĂ¹

Abstract: Mimblewimble is a cryptocurrency protocol promising to overcome notorious blockchain scalability issues. To this day, one of the major factors hindering its wider adoption is the lack of non-interactive transactions, that is, payments where only the sender needs to be online. We start from a proposal by Yu that adds non-interactive transactions to stealth addresses to Mimblewimble, but which turned out to be flawed. Using ideas from Burkett, we propose a modified scheme and analyze it using the provable-security methodology.

Category / Keywords: cryptographic protocols / cryptographic protocols, e-cash, mimblewimble

Date: received 28 Feb 2022, last revised 4 Apr 2022

Contact author: michele orru at berkeley edu

Available format(s): PDF | BibTeX Citation

Note: Improved security of the scheme, not susceptible to Wagner's attack anymore.

Version: 20220404:222150 (All versions of this report)

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