Welcome to the resource topic for 2023/191
Title:
Beyond the Blockchain Address: Zero-Knowledge Address Abstraction
Authors: Sanghyeon Park, Jeong Hyuk Lee, Seunghwa Lee, Jung Hyun Chun, Hyeonmyeong Cho, MinGi Kim, Hyun Ki Cho, Soo-Mook Moon
Abstract:The integration of web2 identities into the web3 blockchain has been a challenging area of research. Existing methods use a mapping approach, linking web2 identities to blockchain addresses, resulting in limitations such as identifier fragmentation across different blockchains.
In this paper, we propose a novel solution, zero-knowledge Address Abstraction (zkAA), which eliminates the need for mapping and enables the direct use of web2 identity in the blockchain. Our solution leverages zero-knowledge proofs verified by smart contracts, allowing users to operate in the blockchain using their web2 identity without any address-related restrictions. The identity used in zkAA is based on the certificate issued by a trusted institution and registered as a hidden form in the blockchain.
Our zkAA solution is implemented as a smart contract on top of the Ethereum blockchain, providing easy integration with existing systems without the need for a hardfork. We conducted an implementation and evaluation of zkAA on Ethereum, where we found that the cost of registering an abstract identity is $7.66 and the cost of publishing an abstracted transaction is $4.75. On Polygon, the cost is much more favorable, with a cost of $0.02 for registering and $0.01 for publishing, as of January 13, 2023. In addition, we found that the time taken for generating proofs for registering is approximately 9.57 seconds and the time cost for publishing is approximately 3.49 seconds on an average local machine. This suggests that the client has adequate time to generate proofs within a single block.
ePrint: https://eprint.iacr.org/2023/191
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