React Native

SFTP Authentication using X.509 Certificates

See more SFTP Examples

Demonstrates how to authenticate with an SSH/SFTP server using an certificate's private key.

Note: See X.509v3 Certificates for SSH Authentication for more information.

React Native

import { Cert, SFtp, SshKey } from '@chilkat/react-native'

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

  const sftp = new SFtp();

  const hostname = 'sftp.example.com';
  const port = 22;
  try {
    await sftp.connectAsync(hostname, port);
  } catch {
    console.log(sftp.lastErrorText);
    return;
  }

  // Load the cert + private key from a .pfx.
  // Note: Chilkat provides methods for loading certs and private keys from many sources, including smart cards and USB tokens (HSM's)
  const cert = new Cert();
  try {
    cert.loadPfxFile('qa_data/pfx/example.pfx', 'pfx_password');
  } catch {
    console.log(cert.lastErrorText);
    return;
  }

  // Get the cert's private key (as PEM) to be used for SSH authentication.
  // (The public key is installed on the server.)
  let privKeyPem: string;
  try {
    privKeyPem = cert.getPrivateKeyPem();
  } catch {
    console.log(cert.lastErrorText);
    return;
  }

  const key = new SshKey();

  // Load a private key from a PEM string:
  try {
    key.fromOpenSshPrivateKey(privKeyPem);
  } catch {
    console.log(key.lastErrorText);
    return;
  }

  // Authenticate with the SSH server.
  try {
    await sftp.authenticatePkAsync('myLogin', key);
  } catch {
    console.log(sftp.lastErrorText);
    return;
  }

  console.log('Public-Key Authentication Successful!');
}