(JavaScript) Convert Java KeyStore to PEM

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

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

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

var success = false;

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

var jks = new CkJavaKeyStore();

var jksPassword = "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(jksPassword,"/someDir/keyStore.jks");
if (success == false) {
    console.log(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.
var fac = new CkFileAccess();
success = fac.OpenForWrite("/pemFiles/caCerts.pem");
if (success == false) {
    console.log(fac.LastErrorText);
    return;
}

var numCerts = jks.NumTrustedCerts;

var cert = new CkCert();
var pem;

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

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

    // Append the PEM string to the open file.
    success = fac.AppendText(pem,"utf-8");
    if (success !== true) {
        console.log(fac.LastErrorText);
        return;
    }

    i = i+1;
}

// Close the output file.
fac.FileClose();

console.log("Trusted certificates saved to PEM.");