introductions

description	FHEVM is a technology that enables confidential smart contracts on the EVM using Fully Homomorphic Encryption (FHE).
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Welcome to FHEVM

Why FHEVM?

Guard Privacy	Keep data encrypted during onchain computation.
Build Fast	Use Solidity, SDKs, templates, etc.
Deploy Anywhere	Compatible with all EVM chains.

Start Building

Explore the doc

Solidity Guides	Write encrypted logic with Solidity tools.	Gitbook-cover.png	Solidity
SDK Guides	Build frontends with encrypted user data.	Gitbook-cover.png	SDK
Examples	Explore real dApps and code templates.	Gitbook-cover.png	Examples

Path to Build

{% stepper %} {% step %}

Set up your development environment

Use the official Hardhat template from Zama that includes all necessary configurations and dependencies to start developing confidential smart contracts.

Clone the template {% endstep %}

{% step %}

Write your first confidential smart contract

Use the provided contract examples, like ConfidentialERC20, to begin. A basic confidential token contract might look like this:

// SPDX-License-Identifier: BSD-3-Clause-Clear
pragma solidity ^0.8.24;

import { FHE } from "@fhevm/solidity/lib/FHE.sol";
import { SepoliaConfig } from "@fhevm/solidity/config/ZamaConfig.sol";

contract MyCounter is SepoliaZamaFHEVMConfig {
  euint64 counter;
  constructor() {
    counter = FHE.asEuint64(0);
  }

  function add() public {
    counter = FHE.add(counter, 1);
  }
}

See the full Solidity guide {% endstep %}

{% step %}

Build your frontend with @zama-ai/relayer-sdk

Start from Zama's ready-to-use React template.

See the full SDK guide Clone the template ; {% endstep %}

{% step %}

To continue

Architecture	Understand how the system fits together.		Broken link
Dapps Demos	Try real projects built with fhevm.
White paper	Dive deep into the cryptographic design.

{% endstep %} {% endstepper %}

Help Center

Ask technical questions and discuss with the community.

• Community forum
• Discord channel
• Telegram