Import Private Key

Import a private key and derive the public address

Import a hex private key and derive the corresponding Ethereum address.

import { Secp256k1 } from '@tevm/voltaire/Secp256k1';
import { Keccak256 } from '@tevm/voltaire/Keccak256';
import { Address } from '@tevm/voltaire/Address';
import { Hex } from '@tevm/voltaire/Hex';

// Parse hex private key to bytes
const privateKeyHex = "0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80";
const privateKey = Hex.toBytes(privateKeyHex);

// Validate private key is on secp256k1 curve
if (!Secp256k1.isValidPrivateKey(privateKey)) {
  throw new Error("Invalid private key");
}

// Derive uncompressed public key (65 bytes: 04 || x || y)
const publicKey = Secp256k1.derivePublicKey(privateKey);

// Derive Ethereum address from public key
// Address = last 20 bytes of keccak256(publicKey[1:])
const address = Address.fromPublicKey(publicKey);
const checksummed = Address.toChecksummed(address);

// Alternatively, derive directly from private key
const addressDirect = Address.fromPrivateKey(privateKey);

Never share or expose private keys. Store them securely.

Related

• Generate Wallet from Mnemonic
• Derive Address from Private Key
• Secp256k1 API Reference
• More Examples