Enigma: Decentralized Computation Platform with Guaranteed Privacy

Abstraction: Peer-to-peer platform for privacy-preserving joint data computation

Key points:

• Enables multiple parties to jointly store and compute over data while keeping it completely private from all participants
• Computational model based on a highly optimized secure multi-party computation (MPC) with verifiable secret-sharing scheme
• Storage uses a modified distributed hash table (DHT) for secret-shared data
• External blockchain serves as the network controller: manages access control, identities, and provides a tamper-proof event log
• Security deposits and fees incentivize correct operation and fairness — similar to Bitcoin's trustless model
• First system claimed to give users cryptographic guarantees for privacy when sharing personal data with third parties

Connections: Mit Media Lab · Bitcoin · Secure Multi Party Computation · Privacy Preserving Computation · Blockchain · Secret Sharing

Source: https://arxiv.org/abs/1506.03471#