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

Demonstrates how to create a .p7s signature that contains a data file, which in this case is a PDF. The .p7s will be compliant with the ICP-Brazil Digital Signature Standard.

Important: This example requires Chilkat v9.5.0.92 or later.

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

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

// Any type of file can be signed.  It doesn't have to be a PDF.
string inFile = "qa_data/pdf/helloWorld.pdf";

Chilkat.BinData bd = new Chilkat.BinData();
bool success = bd.LoadFile(inFile);
if (success == false) {
    Debug.WriteLine("Failed to load " + inFile);
    return;
}

// Get the certificate we'll be using to sign.
Chilkat.Cert cert = new Chilkat.Cert();

success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123");
if (success == false) {
    Debug.WriteLine(cert.LastErrorText);
    return;
}

success = crypt.SetSigningCert(cert);
if (success == false) {
    Debug.WriteLine(crypt.LastErrorText);
    return;
}

// Set properties for signing...
crypt.HashAlgorithm = "sha256";

Chilkat.JsonObject jsonSigningAttrs = new Chilkat.JsonObject();
jsonSigningAttrs.UpdateInt("contentType",1);
jsonSigningAttrs.UpdateInt("signingTime",1);
jsonSigningAttrs.UpdateInt("messageDigest",1);
jsonSigningAttrs.UpdateInt("signingCertificateV2",1);

// 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
jsonSigningAttrs.UpdateString("policyId.id","2.16.76.1.7.1.1.2.3");
jsonSigningAttrs.UpdateString("policyId.profile","PA_AD_RB_v2_3");

crypt.SigningAttributes = jsonSigningAttrs.Emit();

// Sign. 
success = crypt.OpaqueSignBd(bd);
if (success == false) {
    Debug.WriteLine(crypt.LastErrorText);
    return;
}

// Save to a .p7s
success = bd.WriteFile("qa_output/helloWorld.pdf.p7s");

Debug.WriteLine("Success");