(Swift) Generate RSA Public/Private Key Pair and Export to PEM

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

Note: This example requires Chilkat v11.0.0 or greater.

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func chilkatTest() {
    var success: Bool = false

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

    let rsa = CkoRsa()!

    // Generate a 2048-bit key.  Chilkat RSA supports
    // key sizes ranging from 512 bits to 8192 bits.
    let privKey = CkoPrivateKey()!
    success = rsa.genKey(2048, privKey: privKey)
    if success == false {
        print("\(rsa.lastErrorText!)")
        return
    }

    let pubKey = CkoPublicKey()!
    privKey.to(pubKey)

    // Save the private key in PEM format:
    success = privKey.savePemFile("privateKey.pem")
    if success == false {
        print("\(privKey.lastErrorText!)")
        return
    }

    // Save the public key in PEM format:
    success = pubKey.savePemFile(false, path: "publicKey.pem")
    if success == false {
        print("\(pubKey.lastErrorText!)")
        return
    }

    print("Success.")

}