PKCS7 Encrypt MIME

Encrypt MIME using a digital certificate to create PKCS7 encrypted S/MIME.

Downloads:

MS Windows Visual C/C++ Libraries

Linux/CentOS C/C++ Libraries

MAC OS X C/C++ Libraries

Solaris C/C++ Libraries

C++ Builder Libraries

#include <CkMime.h>
#include <CkCert.h>

void ChilkatSample(void)
    {

    CkMime mime;

    bool success;
    success = mime.UnlockComponent("Anything for 30-day trial.");
    if (success == false) {
        printf("%s\n",mime.lastErrorText());
        return;
    }

    //  Build a simple MIME message to be encrypted:
    mime.AddHeaderField("Content-Type","text/plain");
    mime.AddHeaderField("abc","123");
    mime.SetBody("This is a test");

    //  A digital certificate is required to create PKCS7 encrypted MIME.
    //  It can come from a variety of sources: .cer file, .pfx file, PEM files,
    //  an in-memory representation, or directly from a Windows
    //  registry-based certificate store.

    //  This example will load a certificate object from a .cer file.
    //  Note: Only the public-key is required to encrypt.  (Decryption
    //  requires a private key.)

    CkCert cert;
    success = cert.LoadFromFile("myCert.cer");
    if (success == false) {
        printf("%s\n",cert.lastErrorText());
        return;
    }

    //  Encrypt the MIME:
    success = mime.Encrypt(cert);
    if (success == false) {
        printf("%s\n",mime.lastErrorText());
        return;
    }

    //  Display the MIME:
    printf("%s\n",mime.getMime());

    //  The resulting S/MIME looks something like this:
    //  
abc: 123
Content-Disposition: attachment; filename="smime.p7m"
Content-Transfer-Encoding: base64
Content-Type: application/x-pkcs7-mime;
 name="smime.p7m"
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    }