Public Report – Coda Cryptographic Review

During the spring of 2020, O(1) Labs engaged NCC Group to conduct a cryptographic assessment of Coda Protocol. This cryptocurrency leverages state-of-the art cryptographic constructions to provide traditional cryptocurrency applications with a more lightweight blockchain. This assessment focused on the core cryptographic primitives as well as the overlaid protocol. The O(1) Labs team provided source … Continue reading Public Report – Coda Cryptographic Review

Whitepaper – Coinbugs: Enumerating Common Blockchain Implementation-Level Vulnerabilities

By Aleksandar Kircanski and Terence Tarvis A good amount of effort has been dedicated to surveying and systematizing Ethereum smart contract security bug classes. There is, however, a gap in literature when it comes to surveying implementation-level security bugs that commonly occur in basic PoW blockchain node implementations, discovered during the first decade of Bitcoin’s … Continue reading Whitepaper – Coinbugs: Enumerating Common Blockchain Implementation-Level Vulnerabilities

Passive Decryption of Ethereum Peer-to-Peer Traffic

Ethereum, a popular cryptocurrency, utilizes a P2P flood network overlay protocol in order to propagate new transactions and state around the network. As has been shown in previous works[^1][^2], observing the propagation of transactions through the peer-to-peer network layer is often enough to deanonymize users of cryptocurrency networks....