Alternative Authentication with Smart Contracts for Online Games

Abstract

Safely keeping the account’s private key is vital in blockchain technology, as there are no native blockchain mechanisms for recovering the account when the private key is lost. Therefore, this paper proposes a solution to this problem, running directly on the blockchain platform in the form of a smart contract, enabling deposit of digital assets into the contract for safekeeping, along with a list of security questions. The proposed solution can be used, for example, in online games. By providing proof of knowing answers to questions, a player can access his account without his private key. Furthermore, additional security measures are put in place to cope with malicious behaviour.