Da2wa: A Secure Pairing Protocol between a Dapp and a Wallet for the Blockchain Scenario

• DOI: 10.2139/ssrn.4604408
• Publication Date: 2023-10-17T04:19:10Z
• Authors: Fernando Román-Ga...; Juan Hernández-Se...; Oscar Esparza
• Keywords: Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telemàtica i xarxes d'ordinadors; Cryptocurrencies; Pairing protocols; Blockchain; 000; Wallet; Decentralized application; DApp; Public-key cryptography; 004

Wallet applications play a crucial role in securely storing users' private keys needed to interact with the blockchain, while decentralised (DApps) take profit of blockchain technologies create transparent, tamper-proof environments without need for trust relationships.As DApps secure interconnection these is vital yet still challenging.This article introduces DA2Wa, protocol designed establish pairing between cryptocurrency wallet and DApp, both which run as isolated on same machine.The utilizes six-character PIN exchange mechanism, delivering security level equivalent that Bluetooth.To demonstrate we employ Tamarin Prover, tool symbolically modelling analysing protocols.