Create Detached Signature File

Creates and verifies a detached signature.

Download Chilkat C++ Libraries for VC++ 8.0 / Win32

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#include <CkCrypt2.h>
#include <CkCert.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("Crypt component unlock failed\n");
        return;
    }

    CkCert cert;
    cert.LoadByCommonName("Chilkat Software, Inc.");

    //  Tell the crypt component to use this cert.
    crypt.SetSigningCert(cert);

    //  We can sign any type of file, creating a .sig as output:
    success = crypt.CreateDetachedSignature("test.pdf","test.sig");
    if (success == true) {
        printf("Success!\n");
    }

    printf("%s\n",crypt.lastErrorText());

    //  Verify and restore the original file:
    crypt.SetVerifyCert(cert);

    success = crypt.VerifyDetachedSignature("test.pdf","test.sig");
    if (success == true) {
        printf("Success!\n");
    }

    printf("%s\n",crypt.lastErrorText());
    }