dWallet Labs, a core contributor to the Ika network, has unveiled REFHE (Ring-Enhanced Fully Homomorphic Encryption), a breakthrough encryption scheme that operates like a real CPU by supporting both arithmetic and logical operations on encrypted 64-bit values. Announced on August 13, 2025, in Zug, Switzerland, REFHE eliminates the traditional trade-off between arithmetic and logic efficiency in Fully Homomorphic Encryption (FHE), enabling seamless execution of real-world software on encrypted data.
The technology delivers 100× smaller ciphertexts, 20× faster multiplications, and 1,000× faster additions compared to TFHE—the dominant FHE scheme since 2016. This performance leap allows REFHE to function as a practical, CPU-like encrypted execution engine. dWallet Labs plans to integrate REFHE with its Threshold FHE research into the 2PC-MPC protocol powering Ika, the fastest MPC network coordinated on Sui. This integration aims to reduce communication rounds while enhancing latency, throughput, and security for Zero-Trust signing.
Omer Sadika, Co-Founder of Ika and CEO of dWallet Labs, emphasized: "This opens up a new class of secure, privacy-preserving applications that were simply not practical before." Ika, known for sub-second latency and zero-trust security, positions itself as a premier solution for interoperability and decentralized custody in multi-chain DeFi.