A Framework for Formal Transformation and Analysis of Smart Contract Code

Abstract

The smart contract technology has drawn extensive attention in recent years. However, attributing to the immutability of blockchain, a smart contract cannot be altered once deployed on chain. Even a simple flaw in a smart contract can cause huge economic loss. Formal method can provide a reliable guarantee for the security of smart contracts. In this paper, we present a framework for formal transformation and analysis of smart contract code, aiming to facilitate the task of analyzing security issues of smart contracts. In addition, the transformation efficiency is tested and evaluated with different scales of code, which proves the practicality and effectiveness of the transformation framework.