(C) Create CAdES (p7m) Signature using ARSS (Aruba Remote Signing Service)

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Demonstrates creating a CAdES (p7m) signature using the Aruba Remote Signing Service.

Note: This example requires Chilkat v9.5.0.96 or later.

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#include <C_CkCert.h>
#include <C_CkJsonObject.h>
#include <C_CkCrypt2.h>

void ChilkatSample(void)
    {
    HCkCert cert;
    BOOL success;
    HCkJsonObject jsonArss;
    HCkCrypt2 crypt;
    HCkJsonObject signedAttrs;
    const char *inputXmlPath;
    const char *outputP7mPath;

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

    // Load the certificate used for signing.  The certificate's private key is stored on 
    // the Aruba.it server and the signing will happen remotely using the
    // ARSS (Aruba Remote Signing Service).
    // However, we still need the certificate locally (without private key).
    cert = CkCert_Create();
    success = CkCert_LoadFromFile(cert,"qa_data/certs/myCert.cer");
    if (success == FALSE) {
        printf("%s\n",CkCert_lastErrorText(cert));
        CkCert_Dispose(cert);
        return;
    }

    // To sign using the Aruba Remote Signing Service, 
    // add the following lines of code to specify your authentication credentials,
    // and the ID of the certificate w/ private key on the server to be used.
    jsonArss = CkJsonObject_Create();

    // Set the "service" equal to "ARSS" to tell Chilkat to use ARSS for signing.
    CkJsonObject_UpdateString(jsonArss,"service","ARSS");
    // Specify the certificate ID, such as "AS0"
    // This certificate should match the certificate loaded in the above code.
    CkJsonObject_UpdateString(jsonArss,"certID","YOUR_ARSS_CERT_ID");
    CkJsonObject_UpdateString(jsonArss,"otpPwd","YOUR_OTP_PWD");
    CkJsonObject_UpdateString(jsonArss,"typeOtpAuth","demoprod");
    CkJsonObject_UpdateString(jsonArss,"user","YOUR_ARSS_USERNAME");
    CkJsonObject_UpdateString(jsonArss,"userPWD","YOUR_ARSS_PASSWORD");
    success = CkCert_SetCloudSigner(cert,jsonArss);

    crypt = CkCrypt2_Create();

    success = CkCrypt2_SetSigningCert(crypt,cert);
    if (success == FALSE) {
        printf("%s\n",CkCrypt2_lastErrorText(crypt));
        CkCert_Dispose(cert);
        CkJsonObject_Dispose(jsonArss);
        CkCrypt2_Dispose(crypt);
        return;
    }

    // The CadesEnabled property applies to all methods that create PKCS7 signatures. 
    // To create a CAdES-BES signature, set this property equal to true.
    CkCrypt2_putCadesEnabled(crypt,TRUE);

    CkCrypt2_putHashAlgorithm(crypt,"sha256");

    signedAttrs = CkJsonObject_Create();
    CkJsonObject_UpdateInt(signedAttrs,"contentType",1);
    CkJsonObject_UpdateInt(signedAttrs,"signingTime",1);
    CkJsonObject_UpdateInt(signedAttrs,"messageDigest",1);
    CkJsonObject_UpdateInt(signedAttrs,"signingCertificateV2",1);
    CkCrypt2_putSigningAttributes(crypt,CkJsonObject_emit(signedAttrs));

    // You can sign any type of file..
    inputXmlPath = "qa_data/e-Invoice.xml";
    outputP7mPath = "qa_output/signed.p7m";

    // Create the CAdES-BES attached signature, which contains the original data.
    // Chilkat will build the .p7m locally, but will (internally) use ARSS
    // to do the RSA signing remotely.
    success = CkCrypt2_CreateP7M(crypt,inputXmlPath,outputP7mPath);
    if (success == FALSE) {
        printf("%s\n",CkCrypt2_lastErrorText(crypt));
        CkCert_Dispose(cert);
        CkJsonObject_Dispose(jsonArss);
        CkCrypt2_Dispose(crypt);
        CkJsonObject_Dispose(signedAttrs);
        return;
    }

    printf("Success.\n");


    CkCert_Dispose(cert);
    CkJsonObject_Dispose(jsonArss);
    CkCrypt2_Dispose(crypt);
    CkJsonObject_Dispose(signedAttrs);

    }