Install depedencies

    npm install

Generate privateKey

    const forge = require("node-forge");
    const rsa = forge.pki.rsa;
    let keyPair = rsa.generateKeyPair(24);
    let privateKey = keyPair.privateKey;
    let generatedPrivateKey = forge.pki.privateKeyToPem(privateKey);

generatedPrivateKey will have value for example

'-----BEGIN RSA PRIVATE KEY-----\r\n' +
'MCcCAQACBADXMw8CAwEAAQIDA4qJAgIO7QICDmsCAgs5AgIM3QICBds=\r\n' +
'-----END RSA PRIVATE KEY-----\r\n'

Encryption

cd scripts
node encryptString.js "Nam, 31, Vĩnh Phúc"
1a4f8d_659a5af70d1b14d30351d6ad_0522d3a87d9ab45f87dc8099ad4932a5_456b82c0152efe80138f3fad1a4fff5587b8f9e7

Decryption

cd scripts
node decryptString.js 1a4f8d_659a5af70d1b14d30351d6ad_0522d3a87d9ab45f87dc8099ad4932a5_456b82c0152efe80138f3fad1a4fff5587b8f9e7
Nam, 31, Vĩnh Phúc