Derive stacks address from keys

import { getPublicKeyFromPrivate } from "@stacks/encryption";
import { 
  getAddressFromPrivateKey, 
  getAddressFromPublicKey 
} from "@stacks/transactions";

// Derive address from private key
const privateKey = process.env.PRIVATE_KEY; // Keep this secret!
const addressFromPrivate = getAddressFromPrivateKey(privateKey, "testnet");

// Derive public key and address
const publicKey = getPublicKeyFromPrivate(privateKey);
const addressFromPublic = getAddressFromPublicKey(publicKey, "testnet");

console.log("Address:", addressFromPrivate);
console.log("Public key:", publicKey);
console.log("Same address:", addressFromPrivate === addressFromPublic); // true

Description

Generate Stacks addresses from private or public keys using multiple methods

Use Cases

• Wallet address generation
• Key pair validation
• Address recovery from backup keys
• Multi-signature wallet setup

Key Concepts

• Private key - 32-byte random number (keep secret!)
• Public key - Derived from private key using ECDSA
• Address - Base58check-encoded hash of public key
• Network - Different prefixes for mainnet (SP/SM) vs testnet (ST/SN)