Aarhus University Seal / Aarhus Universitets segl

Extracting smart contracts tested and verified in Coq

Publikation: Bidrag til bog/antologi/rapport/proceedingKonferencebidrag i proceedingsForskningpeer review

DOI

We implement extraction of Coq programs to functional languages based on MetaCoq's certified erasure. As part of this, we implement an optimisation pass removing unused arguments. We prove the pass correct wrt. a conventional call-by-value operational semantics of functional languages. We apply this to two functional smart contract languages, Liquidity and Midlang, and to the functional language Elm. Our development is done in the context of the ConCert framework that enables smart contract verification. We contribute a verified boardroom voting smart contract featuring maximum voter privacy such that each vote is kept private except under collusion of all other parties. We also integrate property-based testing into ConCert using QuickChick and our development is the first to support testing properties of interacting smart contracts. We test several complex contracts such as a DAO-like contract, an escrow contract, an implementation of a Decentralized Finance (DeFi) contract which includes a custom token standard (Tezos FA2), and more. In total, this gives us a way to write dependent programs in Coq, test them semi-automatically, verify, and then extract to functional smart contract languages, while retaining a small trusted computing base of only MetaCoq and the pretty-printers into these languages.

OriginalsprogEngelsk
TitelCPP 2021 - Proceedings of the 10th ACM SIGPLAN International Conference on Certified Programs and Proofs, co-located with POPL 2021
RedaktørerCatalin Hritcu, Andrei Popescu
Antal sider17
ForlagAssociation for Computing Machinery
Udgivelsesårjan. 2021
Sider105-121
ISBN (Elektronisk)9781450382991
DOI
StatusUdgivet - jan. 2021
Begivenhed10th ACM SIGPLAN International Conference on Certified Programs and Proofs, CPP 2021, co-located with POPL 2021 - Virtual, Online, Danmark
Varighed: 17 jan. 202119 jan. 2021

Konference

Konference10th ACM SIGPLAN International Conference on Certified Programs and Proofs, CPP 2021, co-located with POPL 2021
LandDanmark
ByVirtual, Online
Periode17/01/202119/01/2021
SponsorACM SIGPLAN

Se relationer på Aarhus Universitet Citationsformater

ID: 211416645