(C++) Iterate Keys and Certs in PEM

Demonstrates how to access each of the private keys and certs contained within a PEM.

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

Chilkat C/C++ Library Downloads
MS Visual C/C++ C++ Builder Linux C/C++ Alpine Linux C/C++	MacOS C/C++ iOS C/C++ Android C/C++ MinGW C/C++

#include <CkPem.h>
#include <CkPrivateKey.h>
#include <CkCert.h>

void ChilkatSample(void)
    {
    bool success = false;

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

    CkPem pem;

    // Load the PEM from a file.
    // If the PEM is encrypted, provide a password.  Otherwise pass an empty string for the password.
    const char *password = "myPassword";
    success = pem.LoadPemFile("../myPemFiles/myPem.pem",password);
    if (success == false) {
        std::cout << pem.lastErrorText() << "\r\n";
        return;
    }

    // Note: If the app already has the PEM pre-loaded in a string variable, then load it 
    // by calling LoadPem instead.  
    const char *pemContent = "... the PEM contents ...";
    success = pem.LoadPem(pemContent,password);
    // Check for success as before..

    // Iterate over the private keys.
    int numPrivateKeys = pem.get_NumPrivateKeys();
    int i = 0;

    CkPrivateKey privKey;
    while (i < numPrivateKeys) {
        pem.PrivateKeyAt(i,privKey);
        std::cout << "Private Key " << i << " is " << privKey.get_BitLength() << " in length" << "\r\n";
        i = i + 1;
    }

    // Iterate over the certificates.
    CkCert cert;
    int numCerts = pem.get_NumCerts();
    i = 0;
    while (i < numCerts) {
        pem.CertAt(i,cert);
        std::cout << "Certificate " << i << " : " << cert.subjectDN() << "\r\n";
        i = i + 1;
    }
    }