npm install @arcium-hq/client @coral-xyz/anchor @solana/web3.js

import * as anchor from '@coral-xyz/anchor';
import { PublicKey, SystemProgram } from '@solana/web3.js';
import {
  getMXEPublicKey,
  getClusterAccAddress,
  getMXEAccAddress,
  getMempoolAccAddress,
  getExecutingPoolAccAddress,
  getComputationAccAddress,
  getCompDefAccAddress,
  getArciumAccountBaseSeed,
  getCompDefAccOffset,
  getArciumProgramId,
  x25519,
  RescueCipher,
  deserializeLE,
} from '@arcium-hq/client';

// 1. Fetch MXE public key
const mxePublicKey = await getMXEPublicKey(provider, programId);

// 2. Generate ephemeral keypair
const privateKey = x25519.utils.randomPrivateKey();
const publicKey = x25519.getPublicKey(privateKey);

// 3. Derive shared secret
const sharedSecret = x25519.getSharedSecret(privateKey, mxePublicKey);

// 4. Encrypt values
const cipher = new RescueCipher(sharedSecret);
const nonce = nacl.randomBytes(16);
const values = [BigInt(10), BigInt(7), BigInt(5)];
const ciphertexts = cipher.encrypt(values, nonce);

// Cluster-based PDAs
const clusterOffset = 768109697; // from ARCIUM_CLUSTER_OFFSET
const clusterAccount = getClusterAccAddress(clusterOffset);
const mempoolAccount = getMempoolAccAddress(clusterOffset);
const executingPool = getExecutingPoolAccAddress(clusterOffset);

// Program-based PDAs
const mxeAccount = getMXEAccAddress(programId);
const computationOffset = new anchor.BN(nacl.randomBytes(8), 'le');
const computationAccount = getComputationAccAddress(clusterOffset, computationOffset);

// Comp def account
const baseSeed = getArciumAccountBaseSeed('ComputationDefinitionAccount');
const offsetBytes = getCompDefAccOffset('my_computation');
const [compDefAccount] = PublicKey.findProgramAddressSync(
  [baseSeed, programId.toBuffer(), offsetBytes],
  getArciumProgramId()
);