ASMesh: Anonymous and Secure Messaging in Mesh Networks Using Stronger, Anonymous Double Ratchet
Alexander Bienstock, Paul Rösler, Yi Tang
Abstract
The majority of secure messengers have single, centralized service providers that relay ciphertexts between users to enable asynchronous communication. However, in some scenarios such as mass protests in censored networks, relying on a centralized provider is fatal. Mesh messengers attempt to solve this problem by building ad hoc networks in which user clients perform the ciphertext-relaying task. Yet, recent analyses of widely deployed mesh messengers discover severe security weaknesses (Albrecht et al. CT-RSA'21 & USENIX Security'22).
Topics & Concepts
Computer scienceComputer networkAsynchronous communicationComputer securityRelayCiphertextService providerService (business)EncryptionPhysicsPower (physics)Quantum mechanicsEconomicsEconomyCryptography and Data SecurityInternet Traffic Analysis and Secure E-votingMobile Ad Hoc Networks