(Swift 3,4,5...) Generate RSA Public/Private Key Pair and Export to PEM

Swift 3,4,5... example code showing how to generate an RSA public/private key pair and export to PEM files.

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
    }

    // Keys are exported in XML format:
    var publicKeyXml: String? = rsa.exportPublicKey()
    print("\(publicKeyXml!)")

    var privateKeyXml: String? = rsa.exportPrivateKey()
    print("\(privateKeyXml!)")

    // Save the private key in PEM format:
    let privKey = CkoPrivateKey()!
    success = privKey.loadXml(privateKeyXml)
    success = privKey.savePemFile("privateKey.pem")

    // Save the public key in PEM format:
    let pubKey = CkoPublicKey()!
    success = pubKey.load(from: publicKeyXml)
    success = pubKey.savePemFile(false, path: "publicKey.pem")

}