Unicode C++

PKCS7 Encrypt using Multiple Certificates

See more MIME Examples

Encrypts MIME using multiple digital certificates. Calls AddEncryptCert once per certificate, followed by a call to EncryptN. The MIME may be decrypted by any owner of one of the certificates + its associated private key. Unicode C++

#include <CkMimeW.h>
#include <CkCertW.h>

void ChilkatSample(void)
    {
    bool success = false;

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

    CkMimeW mime;

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

    //  Load one cert from a .cer file:
    CkCertW cert1;
    success = cert1.LoadFromFile(L"myCert.cer");
    if (success == false) {
        wprintf(L"%s\n",cert1.lastErrorText());
        return;
    }

    //  Load another cert ...
    CkCertW cert2;
    success = cert2.LoadFromFile(L"anotherCert.cer");
    if (success == false) {
        wprintf(L"%s\n",cert2.lastErrorText());
        return;
    }

    //  Tell the MIME object to use these certs for encrypting:
    //  (AddEncryptCert shouldn't fail if we already know it contains
    //  a valid certificate..)
    success = mime.AddEncryptCert(cert1);
    success = mime.AddEncryptCert(cert2);

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

    //  Display the MIME:
    wprintf(L"%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";
    //  
    //  MIID4QYJKoZIhvcNAQcDoIID0jCCA84CAQAxggNlMIIBgQIBADBpMFUxCzAJBgNVBAYTAlpBMSUw
    //  IwYDVQQKExxUaGF3dGUgQ29uc3VsdGluZyAoUHR5KSBMdGQuMR8wHQYDVQQDExZUaGF3dGUgQ29k
    //  ZSBTaWduaW5nIENBAhB4ouTcAmLszrGi170k1deSMA0GCSqGSIb3DQEBAQUABIIBAKnOPgmISrNH
    //  Hd+zESvH5dl5TvBLCxLuIuH6cuZdowHzCqAUzaYFdn1rp88Vvu2x3s6WOvzje/+dE1x0YjEpeqxd
    //  ufehlb6Jl9ucxSMWARWMxWGxu0eZGJVt+SBBrVddqdtrIU9lVt5rBxkU67P8PxgbwdNCX3qJENRO
    //  P/rvp5ngoCkpIxeGqSkPvWv+CA3IXS8FPs8Sl4HNPiAj3e9RBm2MxI1u4cn1HvgGg8yHgHLMG5JF
    //  LzGsmotSQaqEwq2JtOlkjfOwEI+ZhbWQupj6gen2aGc5sW3J26H1usxtV2TQ7WRRxqnZGmlh20dW
    //  4lo3kITYI+iapGlJXmrlDYh2CjkwggHcAgEAMIHDMIGuMQswCQYDVQQGEwJVUzELMAkGA1UECBMC
    //  VVQxFzAVBgNVBAcTDlNhbHQgTGFrZSBDaXR5MR4wHAYDVQQKExVUaGUgVVNFUlRSVVNUIE5ldHdv
    //  cmsxITAfBgNVBAsTGGh0dHA6Ly93d3cudXNlcnRydXN0LmNvbTE2MDQGA1UEAxMtVVROLVVTRVJG
    //  aXJzdC1DbGllbnQgQXV0aGVudGljYXRpb24gYW5kIEVtYWlsAhAj50QEWUPwA+jXOiL8sMwXMA0G
    //  CSqGSIb3DQEBAQUABIIBAFQ1cydWC4M9tdgAlCN03kP8eyuXajwT+5ByhOcJhjuCABg7U8w4Rx28
    //  braGqV+TCBxjyMsqD0KcW49VT6ZHMpQ1yN8R72qDsidmfm9w3u0jVgsaaBkTJXMy4COY/3cZWmYG
    //  dL3Qty8uFeQYddytt6UPJpGJZYsrdFG2doe6qHiRtAxxPrd0GmQRcGvxyDdsojkoBlTMbfwaXOI3
    //  xepR/oh60x/3npUCsl2VpNPfo6oZoej6YZGEuz2MvuWvXVhvuqoTqXGwGDgYMxwTbPwklqZiJtsK
    //  r5Ep3NlWAQX8MGWL0H+NC22cqJuqUCL05yqyAv+JMCpZGAwOVb/wiVNjpAIwYAYJKoZIhvcNAQcB
    //  MBkGCCqGSIb3DQMCMA0CAToECA5NAJY12cU+gDgZFUc+nsQUUbiR1GH8iBVLI+XWlja9TXEe1Hzt
    //  NlsOylRVBDzjNxUtX/zC0YR7bs+2Cf4JbyuMOA==
    }