Unicode C

Add a PFX Source to MailMan for Decryption

Demonstrates the Chilkat MailMan.AddPfxSourceFile method, which adds a PFX/PKCS#12 file to the MailMan object's internal list of sources used for locating certificates and private keys — for example, to decrypt S/MIME email downloaded from the server. The second argument is the PFX password. This example configures a POP3 connection and registers a PFX source.

Background: When MailMan downloads an encrypted (S/MIME) message, it needs the recipient's private key to decrypt it. On Windows and macOS the OS certificate stores are searched automatically, but when the key lives in a standalone PFX file — common on Linux or in server deployments — AddPfxSourceFile tells MailMan where to find it. A PFX bundles the certificate and its private key in one password-protected file.

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Unicode C

#include <C_CkMailManW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkMailManW mailman;

    success = FALSE;

    //  Demonstrates the MailMan.AddPfxSourceFile method, which adds a PFX/PKCS#12 file to the
    //  MailMan object's internal list of sources used for locating certificates and private
    //  keys (for example, to decrypt downloaded S/MIME email).  The 2nd argument is the PFX
    //  password.

    mailman = CkMailManW_Create();

    //  Configure the POP3 server connection.
    CkMailManW_putMailHost(mailman,L"pop.example.com");
    CkMailManW_putMailPort(mailman,995);
    CkMailManW_putPopSsl(mailman,TRUE);
    CkMailManW_putPopUsername(mailman,L"user@example.com");
    CkMailManW_putPopPassword(mailman,L"myPassword");

    //  Provide a PFX so that encrypted emails downloaded from the server can be decrypted.

    success = CkMailManW_AddPfxSourceFile(mailman,L"qa_data/certs/decryption.pfx",L"pfx_password");
    if (success == FALSE) {
        wprintf(L"%s\n",CkMailManW_lastErrorText(mailman));
        CkMailManW_Dispose(mailman);
        return;
    }

    wprintf(L"Added the PFX certificate/private-key source.\n");

    //  Note: The path "qa_data/certs/decryption.pfx" is a relative local filesystem path,
    //  relative to the current working directory of the running application.


    CkMailManW_Dispose(mailman);

    }