White Noise is an encrypted group chat application implementing the Marmot protocol. The Marmot protocol combines the MLS (Messaging Layer Security) protocol with Nostr’s decentralized network to provide private group messaging that does not rely on centralized servers. whitenoise-rs is the Rust backend for White Noise client applications. It leverages
Marmot combines the MLS (Messaging Layer Service) Protocol with Nostr’s decentralized network to provide private group messaging without relying on centralized servers or legacy identity systems. MDK is the Marmot Development Kit and consists of four crates. White Noise is the Rust backend of the Flutter application, and the whitenoise
We performed a security audit of TACEO’s OPRF Noir circuits within their OPRF service, which provides publicly verifiable, privacy-preserving nullifiers via a verifiable threshold OPRF (Oblivious Pseudorandom Function). Our final audit report was completed on January 26, 2026. To read the full report, including our findings, click here: Report
We performed a security audit of the upgraded version of TACEO’s Circom circuits used in their Nullifier Oracle service, which implements publicly verifiable, privacy-preserving nullifiers through a verifiable threshold OPRF (Oblivious Pseudorandom Function). Our final audit report was completed on January 26, 2026. To read the full report, including our
Our team performed a security audit of the Confidential Transfer component of the Solana Token-2022 program. The project, combining the Token-2022 extensions with the zk-elGamal/zk‐sdk, delivers privacy‐preserving token operations while keeping balances and transaction validity cryptographically verifiable via homomorphic twisted ElGamal and Bulletproofs‐based range proofs. Our final audit report was
White Noise has requested that Least Authority perform a review of the Marmot Protocol and conduct security audits of both MDK and White Noise in three phases. Marmot combines the MLS (Messaging Layer Service) Protocol with Nostr’s decentralized network to provide private group messaging without relying on centralized servers or
Least Authority reviewed the changes made to Zebra that will be introduced in the NU6.1 network upgrade. The Zebra project is a Rust implementation of a Zcash node, developed by the Zcash Foundation as an alternative to the reference zcashd client. Its core functionality centers on validating blocks, enforcing consensus
Aligned Layer is a verification layer for zero-knowledge proofs using Eigen Layer. Our team recently performed a security audit of the Aligned Layer system as part of a multi-firm audit, targeting Aligned Layer version 0.4.0. In this review, we performed a follow-up audit, focusing on the changes between Aligned Layer