Title: Fhenix · Vendor · EthSystems

URL Source: https://original.es-internal.pages.dev/vendors/fhenix/

Markdown Content:
---
description: Fhenix builds a CoProcessor that brings Fully Homomorphic Encryption (FHE) to EVM chains, enabling developers to compute directly on encrypted data without ever decrypting it. This allows dApps to offer on-chain privacy by default. At its core, Fhenix introduces CoFHE, a decentralized coprocessor that makes encrypted computation fast, scalable, and easy for Solidity developers to adopt.
title: Fhenix · Vendor · EthSystems
image: https://original.es-internal.pages.dev/og.png
---

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# Fhenix - FHE Based CoProcessor for EVM chains (Fully Homomorphic Encryption as a Service)

## Fits with patterns

* [Private Stablecoin Shielded Payments](https://github.com/ethsystems/map/blob/master/patterns/pattern-private-stablecoin-shielded-payments.md) \- FHE enables encrypted balances and amounts, supporting fully confidential stablecoin transfers.
* [Private Intent-Based Vaults](https://github.com/ethsystems/map/blob/master/patterns/pattern-private-vaults.md) \- FHE-powered execution allows vault strategies to run privately while preserving on-chain auditability of assets.
* [Shielded ERC-20 Transfers](https://github.com/ethsystems/map/blob/master/patterns/pattern-shielding.md) \- Native FHE support provides encrypted ERC-20 transfer flows for end-to-end confidentiality.
* [Confidential ERC3643](https://github.com/ethsystems/map/blob/master/patterns/pattern-erc3643-rwa.md) \- FHE makes it possible to extend ERC3643 into a confidential standard with private, enforceable compliance logic.
* [Private L2s](https://github.com/ethsystems/map/blob/master/patterns/pattern-privacy-l2s.md) \- Fhenix’s CoFHE serves as an FHE coprocessor enabling privacy-preserving rollups and encrypted execution environments.

## Not a substitute for

* ZK-based L2 privacy (e.g., Aztec, Scroll)
* MPC or TEEs for off-chain privacy computation

## Architecture

CoFHE, Fhenix’s encrypted-computation coprocessor, enables smart contracts to perform arithmetic directly on encrypted values, bringing confidential computation seamlessly into standard EVM workflows.

## Privacy domains

* FHE encryption at the contract and variable level.
* Supports hybrid models (FHE + ZK for verification).

## Enterprise demand and use cases

* Financial institutions: [private stablecoin](https://github.com/ethsystems/map/blob/master/use-cases/private-stablecoins.md) transfers, on-chain strategies management and [RWA tokenization](https://github.com/ethsystems/map/blob/master/use-cases/private-rwa-tokenization.md).
* Treasury managers: confidential DeFi strategies, conditional orders and portfolio management.
* Private or dual-mode stablecoins, on-chain private intents, confidential lending markets and privacy-preserving yield strategies.

## Technical details

* EVM-compatible FHE runtime (`FHE.sol`)
* SDKs for Solidity and TypeScript
* Ongoing collaborations with Zama

## Strengths

* Native EVM integration
* Strong security guarantess
* Easy integration for dApps

## Risks and open questions

* High compute cost and latency
* Cross-network interoperability for FHE systems is still developing

## Links

* <https://fhenix.io/>
* <https://cofhe-docs.fhenix.zone/>
* <https://github.com/fhenixprotocol/>

Used in

[ Private Bond Issuance & Trading FHE Coprocessor ](/approaches/approach-private-bonds/#fhe-coprocessor)[ Private Money Market Funds FHE Encrypted Balances ](/approaches/approach-private-money-market-funds/#fhe-encrypted-balances)[ Private Payments Privacy L2 ](/approaches/approach-private-payments/#privacy-l2)[ Private Smart Derivatives FHE Coprocessor ](/approaches/approach-private-derivatives/#fhe-coprocessor)[ Private Transaction Broadcasting Private Rollups ](/approaches/approach-private-broadcasting/#private-rollups)[ White-Label Infrastructure Deployment Vendor-Managed Deployment ](/approaches/approach-white-label-deployment/#vendor-managed-deployment)[ White-Label Infrastructure Deployment Institution-Controlled Deployment ](/approaches/approach-white-label-deployment/#institution-controlled-deployment)[ White-Label Infrastructure Deployment Consortium Deployment ](/approaches/approach-white-label-deployment/#consortium-deployment) 

#### Referenced by

approaches1
* [Private Transaction Broadcasting](/approaches/approach-private-broadcasting/)
building blocks4
* [Private Intent-Based Vaults](/patterns/pattern-private-vaults/)
* [Private Shared State (FHE)](/patterns/pattern-private-shared-state-fhe/)
* [Private Stablecoin Shielded Payments](/patterns/pattern-private-stablecoin-shielded-payments/)
* [TEE-Based Privacy](/patterns/pattern-tee-based-privacy/)

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