In today\'s time, we use Leave Application System managed by some central authority. This can lead to corruption, misuse by a single authority or unnecessary time for approval. So, in this paper, we have developed smart contract architecture for Leave Management System using Solidity and Ethereum, which is a decentralized app architecture leveraged from Blockchain Technology. We also include smartphones as IoT devices by which any client can use this app. Due to the resource-constrained nature of these devices, the smart contract app is coupled with an alternative centralized architecture which is a classic client/server architecture with an underlying Blockchain backend.
Peer-to-peer computing , Cryptography
Software And Hardware
• Hardware: Processor: i3 ,i5 or more RAM: 4GB or more Hard disk: 16 GB or more • Software: Operating System : Windows2000/XP/7/8/10 Apache Tomcat server Frontend :-Java(Jsp/Servlet) Backend:- MYSQL Eclipse,geth