(Swift 3,4,5...) Generate an ECC Key

Demonstrates how to generate an ECC key.

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

func chilkatTest() {
    // All Chilkat classes can be unlocked at once at the beginning of a program
    // by calling UnlockBundle.  It requires a Bundle unlock code.
    let chilkatGlob = CkoGlobal()!
    var success: Bool = chilkatGlob.unlockBundle("Anything for 30-day trial.")
    if success != true {
        print("\(chilkatGlob.lastErrorText!)")
        return
    }

    // Create a Fortuna PRNG and seed it with system entropy.
    // This will be our source of random data for generating the ECC private key.
    let fortuna = CkoPrng()!
    var entropy: String? = fortuna.getEntropy(32, encoding: "base64")
    success = fortuna.addEntropy(entropy, encoding: "base64")

    let ecc = CkoEcc()!

    // Generate a random ECC private key on the secp256r1 curve.
    // Chilkat also supports other curves, such as secp384r1, secp521r1, and secp256k1.

    var privKey: CkoPrivateKey? = ecc.genEccKey("secp256r1", prng: fortuna)
    if ecc.lastMethodSuccess != true {
        print("\(ecc.lastErrorText!)")
        return
    }

    print("\(privKey!.getXml()!)")

    // Save the private key to PKCS8 encrypted PEM
    // (The private key can be saved in a variety of different formats. See the online reference documentation.)
    success = privKey!.savePkcs8EncryptedPemFile("pemPassword", path: "myPemFiles/eccKey123.pem")
    if success != true {
        print("\(privKey!.lastErrorText!)")
    }

    privKey = nil

    print("finished.")

}