(Swift 3,4,5...) REST Basic Auth with Secure Strings

Demonstrates how to do REST Basic authentication using secure strings.

This example requires Chilkat v9.5.0.71 or greater.

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

    var success: Bool

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

    // {
    //   "http_login": "mCrOmA7mBA7Au9RuJGb9hw==",
    //   "http_password": "jJtiI9TgErTTpqBz9JtHBw=="
    // }

    let json = CkoJsonObject()!
    json.loadFile("qa_data/passwords/http.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("000102030405060708090A0B0C0D0E0F", encoding: "hex")
    crypt.setEncodedIV("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(json.string(of: "http_login"), secureStr: ssLogin)
    crypt.decryptSecureENC(json.string(of: "http_password"), secureStr: ssPassword)

    let rest = CkoRest()!

    // Connect to a REST server.
    var bTls: Bool = true
    var port: Int = 443
    var bAutoReconnect: Bool = true
    success = rest.connect("chilkatsoft.com", port: port, tls: bTls, autoReconnect: bAutoReconnect)

    // Cause the "Authorization: Basic ..." header to be added to HTTP requests
    rest.setAuthBasicSecure(ssLogin, password: ssPassword)

    var responseJson: String? = rest.fullRequestNoBody("GET", uriPath: "/helloWorld.html")
    if rest.lastMethodSuccess != true {
        print("\(rest.lastErrorText!)")
        return
    }

    // Show the LastRequestHeader that was sent.
    print("\(rest.lastRequestHeader!)")

    // The LastRequestHeader looks like this:

    // Host: chilkatsoft.com
    // Authorization: Basic bXlIdHRwTG9naW46bXlIdHRwUGFzc3dvcmQ=

}