React Native Requires Chilkat v11.0.0+

Generate an RSA Key and Get as Base64 DER

See more RSA Examples

Demonstrates how to generate a 2048-bit RSA key and return the public and private parts as unencrypted Base64 encoded DER. React Native

import { PrivateKey, PublicKey, Rsa } from '@chilkat/react-native'

function chilkatExample() {
  // This example assumes the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  const rsa = new Rsa();

  // Generate a 2048-bit key.
  const privKey = new PrivateKey();
  try {
    rsa.genKey(2048, privKey);
  } catch {
    console.log(rsa.lastErrorText);
    return;
  }

  // Get the public part of the key.
  const pubKey = new PublicKey();
  privKey.toPublicKey(pubKey);

  // There are two possible formats for representing the RSA public key 
  // in ASN.1 (DER).  The possible formats are PKCS1 and PKCS8.
  // We can get either by setting bChoosePkcs1 to true or false.
  const bChoosePkcs1 = true;
  const pubKeyBase64Der = pubKey.getEncoded(bChoosePkcs1, 'base64');
  console.log('Public Key Base64 DER:');
  console.log(pubKeyBase64Der);

  // Get the private key as Base64 DER:
  // We can get PKCS1 or PKCS8, but with different methods:
  const privKeyPkcs1 = privKey.getPkcs1ENC('base64');
  console.log('Private Key PKCS1 Base64 DER:');
  console.log(privKeyPkcs1);

  const privKeyPkcs8 = privKey.getPkcs8ENC('base64');
  console.log('Private Key PKCS8 Base64 DER:');
  console.log(privKeyPkcs8);
}