Node.js
Sign PDF for ICP-Brasil

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)
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Node.js
NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    //  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://validar.iti.gov.br/
    var pdf = new chilkat.Pdf();

    //  Load a PDF to be signed.
    //  The "hello.pdf" is available at https://chilkatsoft.com/hello.pdf
    success = pdf.LoadFile("qa_data/pdf/hello.pdf");
    if (success == false) {
        console.log(pdf.LastErrorText);
        return;
    }

    var json = new chilkat.JsonObject();

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

    //  Add the CMS options required for ICP-Brasil
    json.UpdateInt("contentType",1);
    json.UpdateInt("messageDigest",1);
    json.UpdateInt("signingCertificateV2",1);
    json.UpdateBool("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_AD_RA_v1_1 --> 2.16.76.1.7.1.5.1.1
    //  PA_AD_RA_v1_2 --> 2.16.76.1.7.1.5.1.2
    //  PA_AD_RA_v2_0 --> 2.16.76.1.7.1.5.2
    //  PA_AD_RA_v2_1 --> 2.16.76.1.7.1.5.2.1
    //  PA_AD_RA_v2_2 --> 2.16.76.1.7.1.5.2.2
    //  PA_AD_RA_v2_3 --> 2.16.76.1.7.1.5.2.3
    //  PA_AD_RA_v2_4 --> 2.16.76.1.7.1.5.2.4

    //  PA_AD_RB_v1_1 --> 2.16.76.1.7.1.1.1.1
    //  PA_AD_RB_v2_0 --> 2.16.76.1.7.1.1.2
    //  PA_AD_RB_v2_1 --> 2.16.76.1.7.1.1.2.1
    //  PA_AD_RB_v2_2 --> 2.16.76.1.7.1.1.2.2
    //  PA_AD_RB_v2_3 --> 2.16.76.1.7.1.1.2.3

    //  PA_AD_RC_v1_1 --> 2.16.76.1.7.1.4.1.1
    //  PA_AD_RC_v2_0 --> 2.16.76.1.7.1.4.2
    //  PA_AD_RC_v2_1 --> 2.16.76.1.7.1.4.2.1
    //  PA_AD_RC_v2_2 --> 2.16.76.1.7.1.4.2.2
    //  PA_AD_RC_v2_3 --> 2.16.76.1.7.1.4.2.3

    //  PA_AD_RT_v1_1 --> 2.16.76.1.7.1.2.1.1
    //  PA_AD_RT_v2_0 --> 2.16.76.1.7.1.2.2
    //  PA_AD_RT_v2_1 --> 2.16.76.1.7.1.2.2.1
    //  PA_AD_RT_v2_2 --> 2.16.76.1.7.1.2.2.2
    //  PA_AD_RT_v2_3 --> 2.16.76.1.7.1.2.2.3

    //  PA_AD_RV_v1_1 --> 2.16.76.1.7.1.3.1.1
    //  PA_AD_RV_v2_0 --> 2.16.76.1.7.1.3.2
    //  PA_AD_RV_v2_1 --> 2.16.76.1.7.1.3.2.1
    //  PA_AD_RV_v2_2 --> 2.16.76.1.7.1.3.2.2
    //  PA_AD_RV_v2_3 --> 2.16.76.1.7.1.3.2.3

    //  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
    //  ---------------------------------------------------
    //  Note: On 24-May-2024, I was informed that adding the "policyId.profile"
    //  causes the PDF signature to fail validation at https://validar.iti.gov.br/
    //  Perhaps something changed in the years since this example was originally written and tested to be working.
    //  You may need to omit the "policyId.profile".
    //  ---------------------------------------------------
    json.UpdateString("policyId.profile","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.
    var cert = new chilkat.Cert();
    success = cert.LoadPfxFile("qa_data/pfx/myPdfSigningCert.pfx","pfx_password");
    if (success == false) {
        console.log(cert.LastErrorText);
        return;
    }

    //  Tell the pdf object to use the certificate for signing.
    success = pdf.SetSigningCert(cert);
    if (success == false) {
        console.log(pdf.LastErrorText);
        return;
    }

    success = pdf.SignPdf(json,"qa_output/hello_signed.pdf");
    if (success == false) {
        console.log(pdf.LastErrorText);
        return;
    }

    console.log("The PDF has been successfully cryptographically signed.");

}

chilkatExample();