C

Authenticode Sign using Smartcard or USB Token

See more Code Signing Examples

Demonstrates how to Authenticode sign an EXE or DLL using a smartcard or USB token, such as a Yubikey.

Note: Chilkat's code signing class was added in v9.5.0.97

C

#include <C_CkJsonObject.h>
#include <C_CkCert.h>
#include <C_CkCodeSign.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkJsonObject json;
    HCkCert cert;
    const char *exePath;
    HCkCodeSign signer;

    success = FALSE;

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

    // First create the following JSON to specify that SHA256 is to be used,
    // and provide timestamp server information.

    // {
    //   "hashAlg": "sha256",
    //   "timestampToken": {
    //     "enabled": true,
    //     "tsaUrl": "http://timestamp.digicert.com",
    //     "requestTsaCert": true,
    //     "hashAlg": "sha256"
    //   }
    // }

    json = CkJsonObject_Create();
    CkJsonObject_UpdateString(json,"hashAlg","sha256");
    CkJsonObject_UpdateBool(json,"timestampToken.enabled",TRUE);
    CkJsonObject_UpdateString(json,"timestampToken.tsaUrl","http://timestamp.digicert.com");
    CkJsonObject_UpdateBool(json,"timestampToken.requestTsaCert",TRUE);
    CkJsonObject_UpdateString(json,"timestampToken.hashAlg","sha256");

    // The only difference in signing with a smartcard or USB token
    // is that the cert is loaded from a smartcard or USB token, instead of a PFX or from elsewhere
    // such as from the Windows certificate store.
    cert = CkCert_Create();

    // Yubico YubiKey OTP+FIDO+CCID 0, default PIN = 123456
    CkCert_putSmartCardPin(cert,"123456");

    // Assuming you have the Yubikey inserted into the USB on the computer...
    // and there is only 1 signing certificate on the Yubikey, then just load from
    // the "smartcard".  (assuming you don't have additional smartcards or USB tokens plugged in)
    success = CkCert_LoadFromSmartcard(cert,"");
    if (success == FALSE) {
        printf("%s\n",CkCert_lastErrorText(cert));
        CkJsonObject_Dispose(json);
        CkCert_Dispose(cert);
        return;
    }

    // If the smartcard/token has several possible certificates that can be used for signing,
    // then see the online documentation for the LoadFromSmartcard method,
    // and also see the online documentation and examples for Chilkat Pkcs11 and ScMinidriver.
    // There are many possible ways to load a Chilkat certificate object with a cert (and associated private key)
    // from a variety of sources.  The only coding difference for any signing function in Chilkat,
    // whether it be a PDF, XmlDSig, CMS, etc. is in how the cert is loaded.

    // You can sign .exe or .dll files.
    exePath = "C:/someOtherDir/HelloWorld.exe";

    signer = CkCodeSign_Create();

    // If successful, the following call will apply the signature to the EXE (or DLL).
    success = CkCodeSign_AddSignature(signer,exePath,cert,json);
    if (success == FALSE) {
        printf("%s\n",CkCodeSign_lastErrorText(signer));
        CkJsonObject_Dispose(json);
        CkCert_Dispose(cert);
        CkCodeSign_Dispose(signer);
        return;
    }

    printf("Successfully applied the Authenticode signature.\n");


    CkJsonObject_Dispose(json);
    CkCert_Dispose(cert);
    CkCodeSign_Dispose(signer);

    }