#privacy-preserving

Golang implementation of the PlatON protocol

Go implementation of Waku v2 protocol

Discovery Protocol

MixEth: efficient, trustless coin mixing service for Ethereum

Privacy-preserving federated learning is distributed machine learning where multiple collaborators train a model through protected gradients. To achieve robustness to users dropping out, existing practical privacy-preserving federated learning schemes are based on (t, N)-threshold secret sharing. Such schemes rely on a strong assumption to guarantee security: the threshold t must be greater than half of the number of users. The assumption is so rigorous that in some scenarios the schemes may not be appropriate. Motivated by the issue, we first introduce membership proof for federated learning, which leverages cryptographic accumulators to generate membership proofs by accumulating users IDs. The proofs are issued in a public blockchain for users to verify. With membership proof, we propose a privacy-preserving federated learning scheme called PFLM. PFLM releases the assumption of threshold while maintaining the security guarantees. Additionally, we design a result verification algorithm based on a variant of ElGamal encryption to verify the correctness of aggregated results from the cloud server. The verification algorithm is integrated into PFLM as a part. Security analysis in a random oracle model shows that PFLM guarantees privacy against active adversaries. The implementation of PFLM and experiments demonstrate the performance of PFLM in terms of computation and communication.

Privacy-first blockchain architecture combining ZK-SNARKs (Groth16), Move smart contracts, and Rust sequencer. Open-source framework for production-ready privacy-preserving applications. Designed by magic.

A Decentralized Privacy-Preserving Publishing Platform.

Shielded Intents Protocol - The Privacy Standard for Web3

Secret Bids is an on-chain privacy-preserving auction platform that allows auctioneers to launch secret auctions to sell their tokens/NFT

Obscura: Privacy-Preserving Protocol for the Algorand Blockchain Using LSAG Ring Signatures

Decentralized Property and Lease Management Platform using Blockchain for transparency and privacy.

Decryptor of MyPub Cipher Suite.