(Swift) Get the Certificate with Private Key from a Java KeyStore

See more Java KeyStore (JKS) Examples

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

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func chilkatTest() {
    var success: Bool = false

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

    // Most of the time a .jks contains one certificate with it's associated private key.
    // (Similar to how a .pfx/.p12 usually contains a particular certificate with private key.)
    // This example demonstrates how to get the certificate with private key such that it can be used
    // by other Chilkat classes wherever a cert w/ private key is needed.
    let jks = CkoJavaKeyStore()!
    var password: String? = "secret"
    success = jks.loadFile(password, path: "qa_data/jks/test_secret.jks")
    if success == false {
        print("\(jks.lastErrorText!)")
        return
    }

    // Make sure we have a private key.
    if jks.numPrivateKeys.intValue < 1 {
        print("No private key available.")
        return
    }

    // -------------------------------------------------------------------------
    // Get the certificate chain associated with the 1st (and probably only) private key in the JKS.

    let chain = CkoCertChain()!
    success = jks.certChain(at: 0, certChain: chain)
    if success == false {
        print("\(jks.lastErrorText!)")
        return
    }

    let cert = CkoCert()!
    success = chain.cert(at: 0, cert: cert)
    if success == false {
        print("\(chain.lastErrorText!)")
        return
    }

    // Verify again that this cert has a private key.
    if cert.hasPrivateKey() != true {
        print("Certificate has no associated private key.")
        return
    }

    // We now have the cert object with it's associated private key, and it can be used in other Chilkat classes where needed.
    // For example..

    let crypt = CkoCrypt2()!
    success = crypt.setSigning(cert)
    if success == false {
        print("\(crypt.lastErrorText!)")
        return
    }

    // ...
    // ...

}