(Unicode C) Sign PDF for ICP-Brasil

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Sign a PDF to create a signed PDF compliant with the ICP-Brasil Digital Signature Standard Conformity Checker. (Verificador de Conformidade do Padrão de Assinatura Digital ICP-Brasil)

Note: This example requires Chilkat v9.5.0.92 or greater.

For more information, see https://verificador.iti.gov.br/verifier-2.6.2/

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#include <C_CkPdfW.h>
#include <C_CkJsonObjectW.h>
#include <C_CkCertW.h>

void ChilkatSample(void)
    {
    HCkPdfW pdf;
    BOOL success;
    HCkJsonObjectW json;
    HCkCertW cert;

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

    // The signed PDF produced by this example should be verifiable at https://verificador.iti.gov.br/verifier-2.10/
    pdf = CkPdfW_Create();

    // Load a PDF to be signed.
    // The "hello.pdf" is available at https://chilkatsoft.com/hello.pdf
    success = CkPdfW_LoadFile(pdf,L"qa_data/pdf/hello.pdf");
    if (success == FALSE) {
        wprintf(L"%s\n",CkPdfW_lastErrorText(pdf));
        CkPdfW_Dispose(pdf);
        return;
    }

    json = CkJsonObjectW_Create();

    // Define the appearance and location of the signature.
    CkJsonObjectW_UpdateInt(json,L"page",1);
    CkJsonObjectW_UpdateString(json,L"appearance.y",L"bottom");
    CkJsonObjectW_UpdateString(json,L"appearance.x",L"middle");
    CkJsonObjectW_UpdateString(json,L"appearance.fontScale",L"9.0");
    CkJsonObjectW_UpdateString(json,L"appearance.text[0]",L"Digitally signed by: cert_cn");
    CkJsonObjectW_UpdateString(json,L"appearance.text[1]",L"current_dt");
    CkJsonObjectW_UpdateString(json,L"appearance.image",L"document-accepted");
    CkJsonObjectW_UpdateString(json,L"appearance.imagePlacement",L"left");
    CkJsonObjectW_UpdateString(json,L"appearance.imageOpacity",L"100");

    // Add the CMS options required for ICP-Brasil
    CkJsonObjectW_UpdateInt(json,L"contentType",1);
    CkJsonObjectW_UpdateInt(json,L"messageDigest",1);
    CkJsonObjectW_UpdateInt(json,L"signingCertificateV2",1);
    CkJsonObjectW_UpdateBool(json,L"ltvOcsp",TRUE);

    // Listed here are the currently existing profiles. (Chilkat will add additional ICP Brasil policy profiles in future versions as new ones are created.)
    // See https://www.gov.br/iti/pt-br/assuntos/repositorio/artefatos-de-assinatura-digital for more information.
    // 
    // PA_PAdES_AD_RA_v1_0 --> 2.16.76.1.7.1.14.1
    // PA_PAdES_AD_RA_v1_1 --> 2.16.76.1.7.1.14.1.1
    // PA_PAdES_AD_RA_v1_2 --> 2.16.76.1.7.1.14.1.2
    // PA_PAdES_AD_RB_v1_0 --> 2.16.76.1.7.1.11.1
    // PA_PAdES_AD_RB_v1_1 --> 2.16.76.1.7.1.11.1.1
    // PA_PAdES_AD_RC_v1_0 --> 2.16.76.1.7.1.13.1
    // PA_PAdES_AD_RC_v1_1 --> 2.16.76.1.7.1.13.1.1
    // PA_PAdES_AD_RC_v1_2 --> 2.16.76.1.7.1.13.1.2
    // PA_PAdES_AD_RT_v1_0 --> 2.16.76.1.7.1.12.1
    // PA_PAdES_AD_RT_v1_1 --> 2.16.76.1.7.1.12.1.1

    // Set the policy profile name
    CkJsonObjectW_UpdateString(json,L"policyId.profile",L"PA_PAdES_AD_RB_v1_1");

    // Load the signing certificate. (Use your own certificate.)
    // Note: If loading from a smart card, call LoadFromSmartcard instead, and make sure to use Chilkat v9.5.0.88 or later.
    cert = CkCertW_Create();
    success = CkCertW_LoadPfxFile(cert,L"qa_data/pfx/myPdfSigningCert.pfx",L"pfx_password");
    if (success == FALSE) {
        wprintf(L"%s\n",CkCertW_lastErrorText(cert));
        CkPdfW_Dispose(pdf);
        CkJsonObjectW_Dispose(json);
        CkCertW_Dispose(cert);
        return;
    }

    // Tell the pdf object to use the certificate for signing.
    success = CkPdfW_SetSigningCert(pdf,cert);
    if (success == FALSE) {
        wprintf(L"%s\n",CkPdfW_lastErrorText(pdf));
        CkPdfW_Dispose(pdf);
        CkJsonObjectW_Dispose(json);
        CkCertW_Dispose(cert);
        return;
    }

    success = CkPdfW_SignPdf(pdf,json,L"qa_output/hello_signed.pdf");
    if (success == FALSE) {
        wprintf(L"%s\n",CkPdfW_lastErrorText(pdf));
        CkPdfW_Dispose(pdf);
        CkJsonObjectW_Dispose(json);
        CkCertW_Dispose(cert);
        return;
    }

    wprintf(L"The PDF has been successfully cryptographically signed.\n");


    CkPdfW_Dispose(pdf);
    CkJsonObjectW_Dispose(json);
    CkCertW_Dispose(cert);

    }