Shows how to compile and deploy a Smart Contract using client-side transaction signature, i.e. does not require the account to be unlocked in the Ethereum node.

compile-deploy-sign.js

const fs = require('fs');
const solc = require('solc');
const Web3 = require('web3');
const Tx = require('ethereumjs-tx')

// Private key to use to sign the transactions
// To decrypt your private key, use e.g. https://www.myetherwallet.com/#view-wallet-info
// You will find your private key file in e.g. .ethereum/keystore or .parity/keys
// In this example the key should correspond to the web3.eth.coinbase address
var privateKey = new Buffer('088c110b6861b6c6c57461370d661301b29a7570d59cb83c6b4f19ec4b47f642', 'hex')

// Connect to local Ethereum node
const web3 = new Web3(new Web3.providers.HttpProvider("http://tcoexownf.westeurope.cloudapp.azure.com:8545"));

// Compile the source code
const input = fs.readFileSync('Token.sol');
const output = solc.compile(input.toString(), 1);
const bytecode = output.contracts['Token'].bytecode;
const abi = JSON.parse(output.contracts['Token'].interface);

// Contract object
const contract = web3.eth.contract(abi);

// Get contract data
const contractData = contract.new.getData({
    data: '0x' + bytecode
});

// Construct the raw transaction
const gasPrice = web3.eth.gasPrice;
const gasPriceHex = web3.toHex(gasPrice);
const gasLimitHex = web3.toHex(300000);

const nonce = web3.eth.getTransactionCount(web3.eth.coinbase);
const nonceHex = web3.toHex(nonce);

const rawTx = {
    nonce: nonceHex,
    gasPrice: gasPriceHex,
    gasLimit: gasLimitHex,
    data: contractData,
    from: web3.eth.coinbase
};

console.log(rawTx);

// Sign and serialize the transaction
const tx = new Tx(rawTx);
tx.sign(privateKey);
const serializedTx = tx.serialize();

// Send the transaction
web3.eth.sendRawTransaction(serializedTx.toString('hex'), (err, hash) => {
    if (err) { console.log(err); return; }

    // Log the tx, you can explore status manually with eth.getTransaction()
    console.log('contract creation tx: ' + hash);

    // Wait for the transaction to be mined
    waitForTransactionReceipt(hash);
});

// Wait for the transaction to be mined

function waitForTransactionReceipt(hash) {
    console.log('waiting for contract to be mined');
    const receipt = web3.eth.getTransactionReceipt(hash);
    // If no receipt, try again in 1s
    if (receipt == null) {
        setTimeout(() => {
            waitForTransactionReceipt(hash);
        }, 1000);
    } else {
        // The transaction was mined, we can retrieve the contract address
        console.log('contract address: ' + receipt.contractAddress);
        testContract(receipt.contractAddress);
    }
}

// Quick test the contract
// NOTE: this part does not sign the transaction on the client

function testContract(address) {
    // Reference to the deployed contract
    const token = contract.at(address);
    // Destination account for test
    const dest_account = '0x002D61B362ead60A632c0e6B43fCff4A7a259285';

    // Assert initial account balance, should be 100000
    const balance1 = token.balances.call(web3.eth.coinbase);
    console.log(balance1 == 1000000);

    // Call the transfer function
    token.transfer(dest_account, 100, {from: web3.eth.coinbase}, (err, res) => {
        if (err) { console.log(err); return; }

        // Log transaction, in case you want to explore
        console.log('tx: ' + res);
        // Assert destination account balance, should be 100 
        const balance2 = token.balances.call(dest_account);
        console.log(balance2 == 100);
    });
}

Thanks !

Thanks a lot. It really helped me in my project.