(Unicode C++) Extract a File from a .p7m (PKCS7 Signed-Data)

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Unicode C++ example to extract the original file from a .p7m (Signed-Data PKCS7 Format) The .p7m contains the signed contents of the original file. It can be verified and restored by calling VerifyP7M.

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#include <CkCrypt2W.h>

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

    CkCrypt2W crypt;

    // What is a .p7m file?

    const wchar_t *outputFile = L"/Users/chilkat/testData/pdf/sample.pdf";
    const wchar_t *inFile = L"/Users/chilkat/testData/p7m/sample.pdf.p7m";

    // Verify and restore the original file:
    bool success = crypt.VerifyP7M(inFile,outputFile);
    if (success == false) {
        wprintf(L"%s\n",crypt.lastErrorText());
        return;
    }

    wprintf(L"Success!\n");
    }