(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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// 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).
Chilkat.Cert cert = new Chilkat.Cert();
bool success = cert.LoadFromFile("qa_data/certs/myCert.cer");
if (success == false) {
    Debug.WriteLine(cert.LastErrorText);
    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.
Chilkat.JsonObject jsonArss = new Chilkat.JsonObject();

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

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

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

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

crypt.HashAlgorithm = "sha256";

Chilkat.JsonObject signedAttrs = new Chilkat.JsonObject();
signedAttrs.UpdateInt("contentType",1);
signedAttrs.UpdateInt("signingTime",1);
signedAttrs.UpdateInt("messageDigest",1);
signedAttrs.UpdateInt("signingCertificateV2",1);
crypt.SigningAttributes = signedAttrs.Emit();

// You can sign any type of file..
string inputXmlPath = "qa_data/e-Invoice.xml";
string 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 = crypt.CreateP7M(inputXmlPath,outputP7mPath);
if (success == false) {
    Debug.WriteLine(crypt.LastErrorText);
    return;
}

Debug.WriteLine("Success.");