Swift Requires Chilkat v11.0.0+

Convert Java KeyStore to PEM

See more Java KeyStore (JKS) Examples

Loads a Java keystore file and saves the trusted certificate entries to a PEM file. Swift

func chilkatTest() {
    var success: Bool = false

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

    let jks = CkoJavaKeyStore()!

    var jksPassword: String? = "myJksPassword"

    //  Load the Java keystore from a file.  The JKS file password is used
    //  to verify the keyed digest that is found at the very end of the keystore.
    //  It verifies that the keystore has not been modified.
    success = jks.loadFile(password: jksPassword, path: "/someDir/keyStore.jks")
    if success == false {
        print("\(jks.lastErrorText!)")
        return
    }

    //  Open/create the output PEM file. 
    //  This example uses Chilkat's file access class for writing the output file.
    //  You may replace the file I/O lines of code with whatever is most convenient for you.
    let fac = CkoFileAccess()!
    success = fac.open(forWrite: "/pemFiles/caCerts.pem")
    if success == false {
        print("\(fac.lastErrorText!)")
        return
    }

    var numCerts: Int = jks.numTrustedCerts.intValue

    let cert = CkoCert()!
    var pem: String?

    //  Iterate over the trusted certs, get the PEM for each,
    //  and append it to the output file.
    var i: Int = 0
    while i < numCerts {
        jks.trustedCert(at: i, cert: cert)

        //  Get the certificate in PEM format.  
        pem = cert.exportPem()

        //  Append the PEM string to the open file.
        success = fac.appendText(text: pem, charset: "utf-8")
        if success != true {
            print("\(fac.lastErrorText!)")
            return
        }

        i = i + 1
    }

    //  Close the output file.
    fac.fileClose()

    print("Trusted certificates saved to PEM.")

}