(MFC) Load Certificate from PFX (PKCS#12)

Loads a digital certificate (and private key, if available) from a PFX file.(also known as PKCS#12)

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

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

void ChilkatSample(void)
    {
    CkString strOut;

    CkCert cert;

    bool success;

    // Load from the PFX file
    const char *pfxFilename = "/Users/chilkat/testData/pfx/chilkat_ssl_pwd_is_test.pfx";
    const char *pfxPassword = "test";

    // A PFX typically contains certificates in the chain of authentication.
    // The Chilkat cert object will choose the certificate w/
    // private key farthest from the root authority cert.
    // To access all the certificates in a PFX, use the 
    // Chilkat certificate store object instead.
    success = cert.LoadPfxFile(pfxFilename,pfxPassword);
    if (success != true) {
        strOut.append(cert.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // Get some information about the digital certificate, 
    // then get the private key...

    // DN = "Distinguished Name"
    strOut.append("SubjectDN:");
    strOut.append(cert.subjectDN());
    strOut.append("\r\n");

    strOut.append("Common Name:");
    strOut.append(cert.subjectCN());
    strOut.append("\r\n");
    strOut.append("Issuer Common Name:");
    strOut.append(cert.issuerCN());
    strOut.append("\r\n");

    strOut.append("Serial Number:");
    strOut.append(cert.serialNumber());
    strOut.append("\r\n");

    // Now for the private key...
    CkPrivateKey *privKey = 0;

    privKey = cert.ExportPrivateKey();
    if (cert.get_LastMethodSuccess() == false) {
        strOut.append(cert.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // The private key object may be used in any Chilkat methods
    // (in other objects/classes) that expect a private key argument.

    // In this case, save the private key to a PKCS8 Encrypted PEM format file:
    const char *pemPassword = "secret";
    const char *pemPath = "/Users/chilkat/testData/pem/chilkat_privKey.pem";
    success = privKey->SavePkcs8EncryptedPemFile(pemPassword,pemPath);
    if (success != true) {
        strOut.append(privKey->lastErrorText());
        strOut.append("\r\n");
        delete privKey;
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    delete privKey;
    strOut.append("Private key saved to PKCS8 Encrypted PEM...");
    strOut.append("\r\n");


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }