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dWallet Labs, a leading cryptography research team and core contributor to the Ika network, has introduced REFHE (Ring-Enhanced Fully Homomorphic Encryption), a novel encryption method designed to handle encrypted computations.
REFHE stands out by enabling both arithmetic and logical operations on encrypted 64-bit data, allowing seamless switching between the two, much like a conventional CPU. This unified approach eliminates the long-standing compromise in Fully Homomorphic Encryption (FHE) systems between efficient mathematics and logical processing.
FHE is often described as the “holy grail” of cryptography because it allows data to be processed while still encrypted, safeguarding sensitive information throughout computation. Historically, FHE implementations have required developers to optimize for either arithmetic or logical efficiency, but not both. REFHE removes that constraint, creating a practical framework for real-world encrypted software that mixes both types of operations.
Surpassing a Decade of TFHE Dominance
Since its emergence in 2016, TFHE has held its place as the leading Fully Homomorphic Encryption framework, especially within blockchain applications embraced by companies such as Zama. For almost a decade, no contender had managed to outperform it—until the arrival of REFHE.
 
According to dWallet Labs, REFHE marks a significant leap forward, producing ciphertexts that are 100 times smaller, executing multiplications 20 times faster, and performing additions a remarkable 1,000 times faster. When paired with its ability to handle both arithmetic and logical operations seamlessly, REFHE becomes the first FHE scheme capable of functioning like a true CPU-based encrypted execution engine.
Impact on MPC and the Ika Network
REFHE, alongside recent Threshold FHE innovations, is expected to enhance the Ika network’s 2PC-MPC (Two-Party Computation – Multi-Party Computation) protocol, which is already considered the fastest MPC system and operates on the Sui blockchain.
The integration of these technologies could allow Ika to execute zero-trust digital signing entirely under FHE, reducing communication overhead while improving latency, throughput, and security.
Building on Threshold FHE Research
This news follows dWallet Labs’ recent breakthrough in Threshold FHE, a technology that allows multi-party decryption to be performed with greater scalability and efficiency. Together, REFHE and Threshold FHE establish the foundation for high-performance encrypted systems capable of executing complex, real-world program logic.
Commenting on the launch, Omer Sadika, Co-Founder of Ika and CEO at dWallet Labs, remarked:
“This is more than a speedup. It’s about finally aligning encrypted computation with the way real software and CPUs work. That opens up a new class of secure, privacy-preserving applications that were simply not practical before.”
About Ika
Ika is a next-generation, parallel MPC (Multi-Party Computation) network engineered for unmatched speed and security. By enabling seamless interoperability and abstracting blockchain complexity, Ika empowers users with a frictionless, secure experience across multiple chains, revolutionizing how digital assets are managed in the DeFi ecosystem.
About dWallet Labs
dWallet Labs is at the forefront of cryptographic innovation, building the security backbone for a decentralized digital future. The company focuses on pioneering technologies like next-generation MPC protocols and Fully Homomorphic Encryption (FHE), driving innovation in privacy and trustless computation. Through its research-driven approach, dWallet Labs is shaping the infrastructure that allows decentralized applications to operate securely, efficiently, and at scale.
Source: https://zycrypto.com/ika-core-contributor-dwallet-labs-unveils-refhe-first-fully-homomorphic-encryption-scheme-that-works-like-a-real-cpu/