devcon 7 / polynomial commitment schemes for zero knowledge proof systems a hands on workshop
Duration: 00:00:00
Speaker: Giuseppe
Type: Workshop
Expertise: Intermediate
Event: Devcon
Date: Nov 2024
Circom buses: a new journey
Circom is one of the most widely used languages in programmable cryptography. In this talk we present an amazing new circom feature, called buses. Like structs in other languages, programmers can define their own buses, as new types, in a general way to create structured collections of signals and freely use them in their code. Buses increase the readability, modularity and security of circuits. Illustrative examples as well as the renewed circomlib, using buses, are presented.
Keynote: Programmable Cryptography and Ethereum
Programmable Cryptography is a "second generation" of cryptographic primitives - primitives that allow arbitrary programs to be executed "inside of" or "on top of" cryptographic objects. Programmable cryptography provides three key affordances that complement and amplify the affordances of Ethereum--verifiability, confidentiality, and non-interactivity. We'll discuss how these technologies can reshape the Internet over the next 50 years.
Keynote: The Universal Cryptographic Adapter
The "secret" third affordance of Zero-Knowledge proof after 1) Privacy and 2) Succinctness is Interoperability. ZK enables us to continuously refactor data, aggregate it from different sources, and transforming it without loosing its integrity. Starting with the Zupass project, and now with the broader adoption of the POD and GPC format, 0xPARC has been exploring using ZK for data sovereignty and creating more interoperable data ecosystem. We will cover our learnings and progress in this talk.
Lessons from integrating LogUp-GKR in the Miden VM
In this talk we will describe how to modify the STARK protocol to prove multiset checks using the GKR protocol. We will take a deep dive of the approach we’ve taken to implement it in the Miden VM, covering the benefits and challenges we've experienced.
Little Things We've learned About FHE
Recently, at PSE, we have been exploring the field of cryptography, specifically focusing on Fully Homomorphic Encryption (FHE). FHE enables secure interactions with encrypted data between different parties. In this presentation, we will introduce key concepts and essential information tailored for developers and application designers. This will help them quickly grasp the fundamentals without getting bogged down by complex mathematical details.
MPC Tooling or How to create MPC apps
Let's get into the state of the art of MPC development: we'll discuss different MPC schemes, current MPC tooling & how you can create MPC apps today. We'll cover the tech stack from a frontend level (e.g. MPC compilers) to a backend - and of course how we can combine them.
Non-Native Arithmetic via CRT Codes
Non-native arithmetic is an important and costly operation in SNARKs. It is essential for proving validity of general cryptographic data like RSA signatures, non-native elliptic curve arithmetic like secp256r1, and general SNARK proof composition. We investigate a new approach to prove non-native integer arithmetic using Residue Number Systems and a batch proximity test for Chinese Remainder Theorem (CRT) codes, as well as surprising connections to STARK soundness.
Introducing Provable Object Data
Built on learnings from experimental projects like Zupass, Provable Object Data (POD) is a new format with open-source libraries for any app to issue verifiable data, and make ZK proofs of claims about that data. PODs allow arbitrary key/value data to be signed and distributed. Flexible proofs about PODs can be created using a highly-configurable family of General Purpose Circuits (GPCs), without app-specific circuits or trusted setup. This talk will focus on POD and GPC motivation and design.
Programmable Cryptography and the future of the Internet
You rarely hear of issues at the networking layer of the Internet: networking companies are running utilities business: they are fungible and can be swapped if distrusted. Most of the value captured on the Internet -- and also most abuse -- happen at the Compute and Data layer of the Web. Ethereum gave us a glimpse of a fundamentally different architecture for Compute and Data than Client/Server architecture.We think the Internet is 1/3 complete, and that programmable cryptography can finish it.
Elliptic curves and SNARKs: past, present and future.
Elliptic curves are used in many proof systems. Some systems (e.g. Bulletproofs) use plain curves (e.g. ed25519). Some (e.g. Groth16, KZG-PLONK) use pairing-friendly curves (e.g. BLS12-381). Some recursive systems require pairing-friendly 2-cycle (e.g. MNT4/6) or 2-chains (e.g. BLS12-377/BW6-761). Some other recursive/folding systems require plain 2-cycle (e.g. Pasta). In this talk we will go through the difference between these curves and why there isn't a silver bullet curve for all scenarios.