Unicode C++

Export Digital Certificate's Public Key

See more Certificates Examples

The ExportPublicKey method can be called to get a certificate's public key. It can then be saved to any of a number of formats: (1) OpenSSL DER, (2) OpenSSL PEM, (3) RSA DER, (4) XML. Unicode C++

#include <CkCertW.h>
#include <CkPublicKeyW.h>

void ChilkatSample(void)
    {
    bool success = false;

    CkCertW cert;

    // LoadFromFile will load virtually any certificate format file.
    // It will auto-recognize the format and load appropiately.
    success = cert.LoadFromFile(L"/Users/chilkat/testData/cer/chilkat.cer");
    if (success == false) {
        wprintf(L"%s\n",cert.lastErrorText());
        return;
    }

    // Get the public key:
    CkPublicKeyW pubkey;
    cert.GetPublicKey(pubkey);

    // Save to various formats:
    success = pubkey.SaveDerFile(false,L"/Users/chilkat/testData/pubkeys/chilkat_pkcs8.der");
    if (success != true) {
        wprintf(L"%s\n",pubkey.lastErrorText());
        return;
    }

    success = pubkey.SavePemFile(false,L"/Users/chilkat/testData/pubkeys/chilkat.pem");
    if (success != true) {
        wprintf(L"%s\n",pubkey.lastErrorText());
        return;
    }

    success = pubkey.SaveDerFile(true,L"/Users/chilkat/testData/pubkeys/chilkat_pkcs1.der");
    if (success != true) {
        wprintf(L"%s\n",pubkey.lastErrorText());
        return;
    }

    success = pubkey.SaveXmlFile(L"/Users/chilkat/testData/pubkeys/chilkat.xml");
    if (success != true) {
        wprintf(L"%s\n",pubkey.lastErrorText());
        return;
    }

    wprintf(L"Public key exported to all file formats.\n");
    }