Check if a MIME Tree Contains Encrypted Parts

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Demonstrates the Chilkat Mime.ContainsEncryptedParts method, which returns whether the currently visible MIME tree contains a CMS/PKCS #7 encrypted entity. It takes no arguments.

Note: The file path is relative to the application's current working directory. Absolute paths may also be used. Supply the path to your own file.

Background: The tree-wide counterpart to IsEncrypted: it finds an encrypted entity nested anywhere in the message, not just at the top. This lets you detect partially-encrypted messages and decide which parts require decryption before processing.

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#include <C_CkMime.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkMime mime;

    success = FALSE;

    //  Demonstrates the Mime.ContainsEncryptedParts method, which returns whether the MIME tree contains a CMS/PKCS #7 encrypted entity.  It takes no arguments.

    mime = CkMime_Create();
    success = CkMime_LoadMimeFile(mime,"qa_data/message.eml");
    if (success == FALSE) {
        printf("%s\n",CkMime_lastErrorText(mime));
        CkMime_Dispose(mime);
        return;
    }

    if (CkMime_ContainsEncryptedParts(mime)) {
        printf("The message tree contains an encrypted part.\n");
    }
    else {
        printf("The message tree contains no encrypted part.\n");
    }



    CkMime_Dispose(mime);

    }