(Unicode C) AddDetachedSignaturePk

Demonstrates how to add a detached signature using a certifcate and it's corresponding private key. The easiest way of doing it is when both the certificate and private key are contained together within a PFX (.pfx or .p12) file. This example demonstrates how to use the certificate and its corresponding private key when they are stored in separate files -- a .cer for the certificate, and a .pem for the private key.

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#include <C_CkMimeW.h>
#include <C_CkCertW.h>
#include <C_CkPrivateKeyW.h>

void ChilkatSample(void)
    {
    HCkMimeW mime;
    HCkCertW cert;
    BOOL success;
    HCkPrivateKeyW privKey;

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

    mime = CkMimeW_Create();

    // Load the certificate from a .cer file.
    cert = CkCertW_Create();
    success = CkCertW_LoadFromFile(cert,L"aaworkarea/myCert.cer");
    if (success == FALSE) {
        wprintf(L"%s\n",CkCertW_lastErrorText(cert));
        CkMimeW_Dispose(mime);
        CkCertW_Dispose(cert);
        return;
    }

    // Load the private key from an encrypted PEM file.
    // (A private key can be loaded from other file formats also..)
    privKey = CkPrivateKeyW_Create();
    success = CkPrivateKeyW_LoadEncryptedPemFile(privKey,L"aaworkarea/myPrivateKey.pem",L"myPassword");
    if (success == FALSE) {
        wprintf(L"%s\n",CkPrivateKeyW_lastErrorText(privKey));
        CkMimeW_Dispose(mime);
        CkCertW_Dispose(cert);
        CkPrivateKeyW_Dispose(privKey);
        return;
    }

    success = CkMimeW_SetBodyFromPlainText(mime,L"This is the plain-text MIME body.");

    // Sign the MIME (adds a PKCS7 detached signature)
    success = CkMimeW_AddDetachedSignaturePk(mime,cert,privKey);
    if (success == FALSE) {
        wprintf(L"%s\n",CkMimeW_lastErrorText(mime));
        CkMimeW_Dispose(mime);
        CkCertW_Dispose(cert);
        CkPrivateKeyW_Dispose(privKey);
        return;
    }

    // Save the S/MIME to a file.
    success = CkMimeW_SaveMime(mime,L"aaworkarea/signedMime.txt");
    if (success == FALSE) {
        wprintf(L"%s\n",CkMimeW_lastErrorText(mime));
        CkMimeW_Dispose(mime);
        CkCertW_Dispose(cert);
        CkPrivateKeyW_Dispose(privKey);
        return;
    }

    wprintf(L"success!\n");


    CkMimeW_Dispose(mime);
    CkCertW_Dispose(cert);
    CkPrivateKeyW_Dispose(privKey);

    }