Vitalik Buterin has pitched the Diamond indistinguishability obfuscation (iO), a novel cryptographic framework that promises to deliver blockchain privacy and trustless infrastructure in both crypto and Web3.
Vitalik proposes new blockchain privacy technology
In his latest blog, the Ethereum co-founder describes Diamond iO as a tool that would enable user interaction with encrypted software, but in such a manner that the program’s underlying logic, code, and keys remain secret. Diamond iO would run on Fully Homomorphic Encryption (FHE) inside a modified Attribute-Based Encryption (ABE) scheme.
Unlike historical assumptions about iO, Buterin’s proposal could theoretically reduce the time it takes to run hidden program logic from a “universal-level” to a “planet-level” timescale. This would lay the groundwork for several privacy-preserving applications, including:
- On-chain voting where the program tallies votes and displays results without the need for a centralized tallying body.
- Private key use where applications can deploy private keys without risking their exposure.
- Trustless cryptographic infrastructure where developers can build secure software licensing protocols and decentralized, trustless Web3 services.
- Privacy-first blockchain and AI systems where artificial intelligence (AI) and smart contracts can process sensitive data with zero leakages.
Current limitations and competition
While Diamond iO is a viable proposition, it still requires extensive research and peer review before deployment. It also demands heavy computational input and tight circuit depth limits and will therefore require additional optimization studies.
Nonetheless, the idea speaks to the ever-growing need for privacy preservation on-chain and beyond, for both individuals and corporate entities.
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