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What is the current state of Bulletproofs+ ?


Hello everyone! This CCS proposal is for implementing Bulletproofs+ for range proofs in Monero. Currently, Bulletproofs is employed for range proofs in Monero. Using Bulletproofs+, we aim to save about 10% of the data being pushed to Monero blockchain everyday. We already have a proof of concept implementation of Bulletproofs+ in Rust. Our simulations show that Bulletproofs+ could speed up proof generation and verification by 21% and 17% (Note: These improvements in timings will vary depending on how efficient the group operations over Ed25519 curve used in Monero are). In blogs 1 and 2 we cover in depth the techniques used in Bulletproofs+ and how they differ with Bulletproofs. Read below for more details on applicability of Bulletproofs+ to Monero.

Team and Scope

I am Suyash Bagad and I just graduated with B.Tech and M.Tech in Electrical Engineering from IIT Bombay (India). My thesis was primarily on designing and implementing novel proofs of reserves protocols for crypto exchanges mainly for Monero and Grin. I have also worked on a few other topics in cryptocurrency research.

This will be a joint project together with @omershlo who is experienced in implementing complex cryptographic systems. Our goal is to provide a full implementation of the protocol (aggregated version) from the Bulletproof+ paper while re-using as much of the existing code base utilized for Bulletproofs.

Funding Note

We estimate to complete the project in about 3 months in 3 steps as below:

Working Proof of Concept Optimizations and Code quality Benchmarking

We need a funding equivalent to a standard researcher's salary of $10k per month amounting to ~450 XMR (for 3 months) according to the moving average on Kraken. The funding is proposed in 3 payouts of 50%, 30% and 20% respectively for the above 3 steps. This project will include both me and @omershlo working as well as academic advisory from Claudio Orlandi.

Details on how Bullet...
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