(Swift 3,4,5...) Generate RSA Key and Export to Encrypted PEM

Swift 3,4,5... sample showing how to generate an RSA key and export to encrypted PEM.

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

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

    let rsa = CkoRsa()!

    // Generate a 1024-bit key.  Chilkat RSA supports
    // key sizes ranging from 512 bits to 4096 bits.
    var success: Bool = rsa.generateKey(1024)
    if success != true {
        print("\(rsa.lastErrorText!)")
        return
    }

    // Get the private key as unencrypted XML:
    var keyXml: String? = rsa.exportPrivateKey()
    print("\(keyXml!)")

    // To encrypt the key -- meaning to get the key in
    // an encrypted PEM format -- load it into a PrivateKey object,
    // and then export to encrypted PEM:
    let privKey = CkoPrivateKey()!

    success = privKey.loadXml(keyXml)
    if success != true {
        print("\(privKey.lastErrorText!)")
        return
    }

    var strEncPem: String?

    strEncPem = privKey.getPkcs8EncryptedPem("myPassword")

    // You now have the private key in an encrypted format,
    // which may be (for example) saved to a database

}