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arXiv · 2112.04581

Building Usable Witness Encryption

Gavin Uberti·Kevin Luo·Oliver Cheng·Wittmann Goh
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Abstract

Witness encryption using multilinear maps was first proposed in 2013, and has continued to evolve since. In this paper, we build on an open-source multilinear map implementation by Carmer and Malozemoff of the graded encoding scheme CLT13 with asymmetric modifications. Using this map, we created the world's first ciphertext encoded with a candidate witness encryption scheme. Finally, using a reduction from Sudoku to Exact Cover, we encrypted the private key to a Bitcoin wallet with 22,700 Satoshi using a Sudoku.

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Gavin Uberti, Kevin Luo, Oliver Cheng, Wittmann Goh. 2021-12-08. Building Usable Witness Encryption. https://arxiv.org/abs/2112.04581

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