Encrypt a JWE with a Recipient Public Key

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.SetPublicKey, which sets the public key used to encrypt for a recipient. The example uses RSA-OAEP-256 key management with AES-256-GCM content encryption.

The file path is relative to the application's current working directory. An absolute path may also be used. Supply the path appropriate to your own environment.

import { JsonObject, Jwe, PublicKey } from '@chilkat/react-native'

function chilkatExample() {
  const jwe = new Jwe();

  // Protected header: RSA-OAEP-256 key management with AES-256-GCM content encryption.
  const header = new JsonObject();
  header.updateString('alg', 'RSA-OAEP-256');
  header.updateString('enc', 'A256GCM');
  try {
    jwe.setProtectedHeader(header);
  } catch {
    console.log(jwe.lastErrorText);
    return;
  }

  // The file path is relative to the application's current working directory.  An absolute path
  // may also be used.  Supply the path appropriate to your own environment.
  // Load the recipient's public key.
  const pubKey = new PublicKey();
  try {
    pubKey.loadFromFile('qa_data/recipient_pubkey.pem');
  } catch {
    console.log(pubKey.lastErrorText);
    return;
  }

  // Set the public key used to encrypt for recipient 0.
  try {
    jwe.setPublicKey(0, pubKey);
  } catch {
    console.log(jwe.lastErrorText);
    return;
  }

  let jweCompact: string;
  try {
    jweCompact = jwe.encrypt('This is the secret content.', 'utf-8');
  } catch {
    console.log(jwe.lastErrorText);
    return;
  }

  console.log(jweCompact);
}