(C++) Convert Java KeyStore to PEM

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

Chilkat C/C++ Library Downloads
MS Visual C/C++ Linux/CentOS C/C++ Alpine Linux C/C++ MAC OS X C/C++	armhf/aarch64 C/C++ C++ Builder iOS C/C++ Android C/C++	Solaris C/C++ MinGW C/C++

#include <CkJavaKeyStore.h>
#include <CkFileAccess.h>
#include <CkCert.h>

void ChilkatSample(void)
    {
    // This requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkJavaKeyStore jks;

    const char *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.
    bool success = jks.LoadFile(jksPassword,"/someDir/keyStore.jks");
    if (success != true) {
        std::cout << jks.lastErrorText() << "\r\n";
        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.
    CkFileAccess fac;
    success = fac.OpenForWrite("/pemFiles/caCerts.pem");
    if (success != true) {
        std::cout << fac.lastErrorText() << "\r\n";
        return;
    }

    int numCerts = jks.get_NumTrustedCerts();
    int i;

    CkCert *cert = 0;
    const char *pem = 0;

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

        // Get the certificate in PEM format.  
        pem = cert->exportCertPem();

        // Append the PEM string to the open file.
        // The PEM contains only us-ascii chars..
        success = fac.AppendAnsi(pem);
        if (success != true) {
            std::cout << fac.lastErrorText() << "\r\n";
            delete cert;
            return;
        }

        delete cert;
        i = i + 1;
    }

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

    std::cout << "Trusted certificates saved to PEM." << "\r\n";
    }