A Verification of Digital Certificate Forgery Using Blockchain Technology and Smart Contract

Digital certificate forgery is becoming increasingly common and impacting information security. This research develops a framework and system for verifying digital document signing certificates by applying blockchain technology and smart contracts. Smart contracts are created on the Ethereum network to define various conditions in developing information systems that support adding digital certificates to the blockchain, verifying digital certificates, and accessing digital certificates. The research tested the security of smart contracts using the Slither tool and analyzed the shortcomings of smart contract development using the Solhint tool. The research results indicate that smart contracts can function correctly without security risks and can be used to verify digital certificate forgery. Additionally, smart contracts can be utilized in developing information systems and further developed with other related research in the future.