Swift

SSH Authenticate Secure

Demonstrates how to do SSH password authentication with secure strings.

This example requires Chilkat v9.5.0.71 or greater.

Swift

func chilkatTest() {
    var success: Bool = false

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // Imagine we've previously saved our encrypted login and password within a JSON config file
    // that contains this:

    // {
    //   "ssh_login": "2+qylFfC56Ck7OQQt/U2/w==",
    //   "ssh_password": "5neIq9Jmn0E3p71N6Yc8TA=="
    // }

    let json = CkoJsonObject()!
    json.loadFile(path: "qa_data/passwords/ssh.json")

    let crypt = CkoCrypt2()!

    // These are the encryption settings we previously used to encrypt the credentials within the JSON config file.
    crypt.cryptAlgorithm = "aes"
    crypt.cipherMode = "cbc"
    crypt.keyLength = 128
    crypt.setEncodedKey(keyStr: "000102030405060708090A0B0C0D0E0F", encoding: "hex")
    crypt.setEncodedIV(ivStr: "000102030405060708090A0B0C0D0E0F", encoding: "hex")
    crypt.encodingMode = "base64"

    let ssLogin = CkoSecureString()!
    let ssPassword = CkoSecureString()!

    // Decrypt to the secure string.  (the strings will still held in memory encrypted, but are now encrypted using
    // a randomly generated session key.)
    crypt.decryptSecureENC(cipherText: json.string(of: "ssh_login"), secureStr: ssLogin)
    crypt.decryptSecureENC(cipherText: json.string(of: "ssh_password"), secureStr: ssPassword)

    let ssh = CkoSsh()!

    success = ssh.connect(hostname: "MY-SSH-SERVER-DOMAIN-OR-IP", port: 22)
    if success != true {
        print("\(ssh.lastErrorText!)")
        return
    }

    // Authenticate using secure strings
    success = ssh.authenticateSecPw(login: ssLogin, password: ssPassword)
    if success != true {
        print("\(ssh.lastErrorText!)")
        return
    }

    print("SSH Authentication successful.")

    ssh.disconnect()

}