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

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 <CkCrypt2.h>

void ChilkatSample(void)
    {
    CkCrypt2 crypt;

    //  Any string argument automatically begins the 30-day trial.
    bool success;
    success = crypt.UnlockComponent("30-day trial");
    if (success != true) {
        printf("%s\n",crypt.lastErrorText());
        return;
    }

    const char * outFile;
    outFile = "/Users/chilkat/testData/pdf/sample.pdf";
    const char * inFile;
    inFile = "/Users/chilkat/testData/p7m/sample.pdf.p7m";

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

    printf("Success!\n");
    }