Fhenix acquires Sunscreen, appoints Founder to lead privacy research

Fhenix has acquired Sunscreen, one of the earliest teams focused on fully homomorphic encryption (FHE) for Web3, as the company expands its privacy infrastructure for blockchain ecosystems.

As part of the deal, Sunscreen founder Ravital Solomon has joined Fhenix to lead the company's research efforts.

The acquisition brings together expertise in TFHE, BFV, encrypted computation and post-quantum cryptography as Fhenix seeks to strengthen its quantum-safe privacy stack across Ethereum, Arbitrum and Base.

The company said the move reflects the growing importance of encrypted computation as stablecoins, tokenized assets, artificial intelligence applications and institutional capital continue to move on-chain.

Acquisition strengthens Fhenix's cryptography expertise

Sunscreen launched publicly in 2022 with an open-source FHE compiler and grants program before expanding into zero-knowledge tooling, threshold-encrypted systems, developer tools and privacy-preserving application architectures.

Ravital Solomon has been an early contributor to the development of FHE for blockchain systems.

Her work includes lattice-based post-quantum cryptography, privacy-preserving smart contracts, encrypted computation frameworks and production-focused cryptographic applications.

The acquisition also expands Fhenix's existing research efforts around CoFHE, the company's encrypted computation infrastructure for Ethereum Virtual Machine (EVM) applications.

Fhenix said it has recently advanced research in threshold FHE decryption, DBFV exact arithmetic and scalable encrypted computation designed for blockchain workloads.

The combined organization will bring together research and engineering capabilities spanning BFV, TFHE, threshold cryptography, compiler design and confidential application architecture.

Focus on scalable encrypted computation

Fhenix said the combined research team will focus on developing scalable FHE systems, quantum-resistant infrastructure and cryptographic foundations for confidential blockchain applications.

The company said these technologies are intended to support privacy-sensitive use cases across finance, payments, digital identity, artificial intelligence and other onchain applications.

"FHE is entering a new phase," said Guy Zyskind, Founder of Fhenix. "The conversation is no longer about whether encrypted computation works. It's about making it scalable, practical, and available across the ecosystems where developers are building today. Sunscreen has been one of the most respected teams pushing this field forward from the very beginning. Bringing Ravital and Sunscreen's assets into Fhenix allows us to move faster toward our goal of building the quantum-safe privacy layer for Ethereum, Arbitrum, Base, and beyond."

Solomon said the combination of research and deployment capabilities influenced her decision to join the company.

"I started Sunscreen because I believed advanced cryptography should shift from theoretical to usable," said Ravital Solomon. "What excited me about joining Fhenix is the combination of ambitious research and a clear path to deployment. Fhenix has already built meaningful infrastructure across live blockchain ecosystems, and I'm excited to help lead the next chapter of research as encrypted computation moves closer to mainstream adoption."

Expansion supports long-term privacy strategy

Fhenix said the acquisition reflects its long-term strategy of assembling research talent focused on fully homomorphic encryption and privacy technologies.

According to the company, future leadership in encrypted computation will depend on solving the technical challenges required to make privacy solutions scalable and practical for developers building blockchain applications.

Fhenix develops privacy infrastructure powered by fully homomorphic encryption, enabling encrypted smart contracts while maintaining blockchain composability. The platform currently focuses on decentralized finance applications across Ethereum, Arbitrum and Base.

Sunscreen specializes in applied cryptography and develops compiler technology, encrypted application architectures, and developer tools designed to accelerate the adoption of fully homomorphic encryption in production environments.