SmartOTPs: An Air-Gapped 2-Factor Authentication for Smart-Contract Wallets

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26230%2F26%3A0191341" target="_blank" >RIV/00216305:26230/26:0191341 - isvavai.cz</a>

Výsledek na webu

<a href="https://github.com/ivan-homoliak-sutd/SmartOTPs?tab=readme-ov-file" target="_blank" >https://github.com/ivan-homoliak-sutd/SmartOTPs?tab=readme-ov-file</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

SmartOTPs: An Air-Gapped 2-Factor Authentication for Smart-Contract Wallets

Popis výsledku v původním jazyce

We propose and develop SmartOTPs, a smart-contract wallet framework that gives a flexible, usable, and secure way of managing crypto-tokens in a self-sovereign fashion. The proposed framework consists of four components (i.e., an authenticator, a client, a hardware wallet, and a smart contract), and it provides 2-factor authentication (2FA) performed in two stages of interaction with the blockchain. To the best of our knowledge, our framework is the first one that utilizes one-time passwords (OTPs) in the setting of the public blockchain. In SmartOTPs, the OTPs are aggregated by a Merkle tree and hash chains whereby for each authentication only a short OTP (e.g., 16B-long) is transferred from the authenticator to the client. Such a novel setting enables us to make a fully air-gapped authenticator by utilizing small QR codes or a few mnemonic words, while additionally offering resilience against quantum cryptanalysis. We have made a proof-of-concept based on the Ethereum platform. Our cost analysis shows that the average cost of a transfer operation is comparable to existing 2FA solutions using smart contracts with multi-signatures.

Název v anglickém jazyce

SmartOTPs: An Air-Gapped 2-Factor Authentication for Smart-Contract Wallets

Popis výsledku anglicky

We propose and develop SmartOTPs, a smart-contract wallet framework that gives a flexible, usable, and secure way of managing crypto-tokens in a self-sovereign fashion. The proposed framework consists of four components (i.e., an authenticator, a client, a hardware wallet, and a smart contract), and it provides 2-factor authentication (2FA) performed in two stages of interaction with the blockchain. To the best of our knowledge, our framework is the first one that utilizes one-time passwords (OTPs) in the setting of the public blockchain. In SmartOTPs, the OTPs are aggregated by a Merkle tree and hash chains whereby for each authentication only a short OTP (e.g., 16B-long) is transferred from the authenticator to the client. Such a novel setting enables us to make a fully air-gapped authenticator by utilizing small QR codes or a few mnemonic words, while additionally offering resilience against quantum cryptanalysis. We have made a proof-of-concept based on the Ethereum platform. Our cost analysis shows that the average cost of a transfer operation is comparable to existing 2FA solutions using smart contracts with multi-signatures.

Druh

G_funk - Funkční vzorek

CEP obor

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OECD FORD obor

10201 - Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Interní identifikační kód produktu

SmartOTPs

Číselná identifikace

9781450381390

Technické parametry

The parameters of the product are describe in our paper https://dl.acm.org/doi/abs/10.1145/3419614.3423257 We developed software implementation of smart contract wallet, client DAPP, and authenticator App (both as Android app as well as hardware implementation on ESP8266 MCU).

Ekonomické parametry

No known. The product is licensed under MIT license, and its altered version is used by Harmony One Wallet - https://github.com/polymorpher/one-wallet. At the peak times of Harmony, its OneWallet secured hundreds of millions of USD.

Kategorie aplik. výsledku dle nákladů

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IČO vlastníka výsledku

00216305

Název vlastníka

Vysoké učení technické v Brně

Stát vlastníka

CZ - Česká republika

Druh možnosti využití

N - Využití výsledku jiným subjektem je možné bez nabytí licence (výsledek není licencován)

Požadavek na licenční poplatek

N - Poskytovatel licence na výsledek nepožaduje licenční poplatek

Adresa www stránky s výsledkem

https://github.com/ivan-homoliak-sutd/SmartOTPs?tab=readme-ov-file