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* docs: rename tfhe to fhe * docs: renaming all function names in the docs and library names * docs: update all mentions of TFHE * docs: tfhe-rs stays the same * docs: tfhe-rs stays the same * docs: rename repo * docs: fix renaming after merge conflicts * docs: resolve issues
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Architectural overview
The fhevm architecture provides the foundation for confidential smart contracts on EVM-compatible blockchains. At its core is FHE, a cryptographic technique enabling computations directly on encrypted data, ensuring privacy at every stage.
This system relies on three key types:
- The public key: used for encrypting data.
- The private key: used for decryption and securely managed by the Key Management System or KMS
- The evaluation key: enabling encrypted computations performed by the coprocessor.
The fhevm leverages Zama's FHE library, integrating seamlessly with blockchain environments to address transparency, composability, and scalability challenges. Its hybrid architecture combines:
- On-chain smart contracts for encrypted state management and access controls.
- Off-chain coprocessors for resource-intensive FHE computations.
- The Gateway to coordinate between blockchain, KMS, and coprocessors.
- The KMS for secure cryptographic key management and proof validation.
This architecture enables developers to write private, composable smart contracts using symbolic execution and zero-knowledge proofs, ensuring data confidentiality and computational integrity.
For a detailed exploration of the fhevm architecture, including components, workflows, and deployment models, see Architecture Overview.