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awesome-fhe-blockchain

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A curated list of awesome Fully Homomorphic Encryption (FHE) x Blockchain resources, libraries, projects, and more.

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# Awesome FHE x Blockchain

A curated list of awesome Fully Homomorphic Encryption (FHE) x Blockchain resources, libraries, projects, and more.
This includes the innovative fhEVM technology, projects utilizing FHE within the blockchain space, educational materials & community links.

## What is fhEVM?

fhEVM is a technology that enables confidential smart contracts on the Ethereum Virtual Machine (EVM) using Fully Homomorphic Encryption (FHE). It is developed by Zama, and you can learn more about it in their [fhEVM GitHub repository](https://github.com/zama-ai/fhevm).

**Key Features of fhEVM:**
- **End-to-end encryption** of transactions and state, ensuring data included in transactions is encrypted and never visible to anyone.
- **Composability and data availability on-chain**, with states updated while remaining encrypted at all times.
- **No impact on existing dapps and state**, allowing encrypted state to co-exist alongside the public one without affecting existing dapps.

**Mechanism behind fhEVM:**
- Everything is encrypted under a single global FHE public key.
- The global secret key is generated using a threshold protocol (parts of the secret key are distributed among validators).
- The inputs are encrypted using the FHE public key.
- Computations on encrypted data are done locally by validators.
- Values can be decrypted by validators using the threshold protocol.
- Values can also be re-encrypted (without decryption) under another public key (let’s denote it “public key a”) using a threshold protocol. Re-encrypted values can be decrypted by the public key owner.

## Projects Using FHE x Blockchain or fhEVM

- [Zama](https://www.zama.ai/) - An open source cryptography company building state-of-the-art FHE solutions for blockchain and AI.
- [Fhenix](https://www.fhenix.io/) - An R&D-driven Ethereum infrastructure company delivering a full-stack confidential compute tooling suite.
- [Shibarium](https://shibarium.shib.io/fr) - Memecoin chain that integrated Zama technology.
- [PrivaSea](https://www.privasea.ai/) - The world's first FHEML inference network.
- [Inco](https://www.inco.org/) - Universal confidentiality layer of web3, powered by FHE and secured by Ethereum.
- [Octra](https://twitter.com/octra) - A FHE blockchain network with support for isolated execution environments.
- [Mind Network](https://mindnetwork.io/) - The Zero Trust Layer of Web3.
- [Sunscreen](https://sunscreen.tech/) - Privacy engine of the new web.

## Libraries

- [fhEVMJS by Zama - dAPP SDK](https://github.com/zama-ai/fhevmjs/)
- [fhEVM by Zama](https://github.com/zama-ai/fhevm/)
- [Hardhat Example by Fhenix](https://github.com/FhenixProtocol/fhenix-hardhat-example)
- [UI Demo by Fhenix](https://github.com/FhenixProtocol/fhenix-ui-demo)
- [Hardhat Plugin by Fhenix](https://github.com/FhenixProtocol/fhenix-hardhat-plugin)
- [Indexer by Inco](https://fhevm-explorers.notion.site/Subgraph-9edb5b47fbff4751a693d1e4748ffd21?pvs=4)
- [fhEVMJS by Inco](https://github.com/Inco-fhevm/fhevmjs-react-example)
- [zkFHE on risc0](https://github.com/emilianobonassi/zkFHE)
- [fhEVM Go by Zama](https://github.com/zama-ai/fhevm-go)

## Documentation

- [Zama](https://docs.zama.ai/fhevm)
- [Fhenix](https://docs.fhenix.zone/)
- [Mind Network](https://mind-network.gitbook.io/)
- [Octra](https://docs.octra.org/)
- [Inco](https://docs.inco.org/)
- [Fhenix.js](https://fhenixjs.fhenix.zone/)
- [PrivaSea](https://docs.privasea.ai/)

## Communities

- [fhEVM explorers](https://t.me/+Ojt5y-I7oR42MTkx)
- [FHE.org](https://fhe.org/)
- [Zama Forum](https://community.zama.ai/)
- [Octra Chat](https://t.me/octra_chat_en)
- [Fhenix Discord](https://discord.com/invite/FuVgxrvJMY)
- [Inco Discord](https://discord.com/invite/KKQrMkHCbs)

## Resources

- [Introduction to FHE: What is FHE, how does FHE work, how is it connected to ZK and MPC, what are the FHE use cases in and outside of the blockchain, etc.](https://taiko.mirror.xyz/2O9rJeB-1PalQeYQlZkn4vgRNr_PgzaO8TWUOM5wf3M)
- [How to write confidential smart contracts using Zama's fhEVM - Tutorial](https://www.youtube.com/watch?v=1FtbyHZwNX4)
- [Awesome Homomorphic Encryption](https://github.com/jonaschn/awesome-he)
- [Confidential ERC-20 Tokens Using Homomorphic Encryption and the fhEVM](https://www.zama.ai/post/confidential-erc-20-tokens-using-homomorphic-encryption)
- [Morten Dahl - Homomorphic Encryption in the EVM](https://www.youtube.com/watch?v=eivfVykPP8U)
- [Onchain Blind Auctions Using Homomorphic Encryption and the fhEVM](https://www.zama.ai/post/on-chain-blind-auctions-using-homomorphic-encryption)
- [Exploring Zama](https://furkanakal.com/exploring-zama)
- [An Intro to Fully Homomorphic Encryption for Engineers](https://blog.sunscreen.tech/an-intro-to-fully-homomorphic-encryption-for-engineers/)
- [Fully Homomorphic Encryption, the Holy Grail of Computing, by Messari](https://messari.io/report/fully-homomorphic-encryption-the-holy-grail-of-computing)
- [ZKPs, FHE, MPC: Managing Private State in Blockchains, by Alliance](https://medium.com/alliancedao/zkps-fhe-mpc-managing-private-state-in-blockchains-17cc3661007d)
- [The Dawn of On-Chain FHE, by Kyle Samani](https://multicoin.capital/2023/09/26/the-dawn-of-on-chain-fhe/)

### To add your project or resource to the list, make a pull request with relevant information.

awesome-fhe-blockchain

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