(.NET Core C#) Create CAdES Signature (.p7s) Compliant with ICP-Brazil Digital Signature Standard

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Demonstrates how to create a CMS signature w/ policy ID that is compliant with the ICP-Brazil Digital Signature Standard.

For more information, see https://validar.iti.gov.br/

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

// ------------------------------------------------------------------------------------------------------
// Note: This example creates a CAdES (CMS) signature (.p7s) that contains the PDF.
// It is different than signing a PDF.  To sign a PDF where the resulting PDF contains the CMS signature,
// see this example:  Sign PDF for ICP-Brasil
// ------------------------------------------------------------------------------------------------------

Chilkat.Crypt2 crypt = new Chilkat.Crypt2();

Chilkat.Cert cert = new Chilkat.Cert();
bool success = cert.LoadPfxFile("mySigningCert.pfx","pfxPassword");
if (success != true) {
    Debug.WriteLine(cert.LastErrorText);
    return;
}

crypt.SetSigningCert(cert);

// See https://www.gov.br/iti/pt-br/assuntos/repositorio/artefatos-de-assinatura-digital

// Create JSON to indicate which signing attributes to include.
Chilkat.JsonObject attrs = new Chilkat.JsonObject();
attrs.UpdateBool("contentType",true);
attrs.UpdateBool("signingTime",true);
attrs.UpdateBool("messageDigest",true);
attrs.UpdateBool("signingCertificateV2",true);

attrs.UpdateString("policyId.hashAlg","SHA256");

// 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 --> 2.16.76.1.7.1.5.1
// 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 --> 2.16.76.1.7.1.1.1
// 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 --> 2.16.76.1.7.1.4.1
// 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 --> 2.16.76.1.7.1.2.1
// 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 --> 2.16.76.1.7.1.3.1
// 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

// Set the policy OID and the profile name
attrs.UpdateString("policyId.id","2.16.76.1.7.1.1.2.3");
attrs.UpdateString("policyId.profile","PA_AD_RB_v2_3");

crypt.SigningAttributes = attrs.Emit();

// The input file can be any type of file.
string inFile = "toBeSigned.pdf";
string outFile = "signed.pdf.p7s";

success = crypt.CreateP7M(inFile,outFile);
if (success == false) {
    Debug.WriteLine(crypt.LastErrorText);
    return;
}

Debug.WriteLine("Success.");