(Java) Create CAdES-BES .p7m for FatturaPA XML Invoice

Demonstrates how to create a CAdES BES invoice.xml.p7m for the Italian FatturaPA exchange system.

Note: This example requires Chilkat v9.5.0.75.

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import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    //  Note: Requires Chilkat v9.5.0.75 or greater.

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

    CkCrypt2 crypt = new CkCrypt2();

    //  Use a digital certificate and private key from a PFX file (.pfx or .p12).
    String pfxPath = "qa_data/pfx/cert_test123.pfx";
    String pfxPassword = "test123";

    CkCert cert = new CkCert();
    boolean success = cert.LoadPfxFile(pfxPath,pfxPassword);
    if (success != true) {
        System.out.println(cert.lastErrorText());
        return;
        }

    //  Provide the signing cert (with associated private key).
    success = crypt.SetSigningCert(cert);
    if (success != true) {
        System.out.println(crypt.lastErrorText());
        return;
        }

    //  Indicate that SHA-256 should be used.
    crypt.put_HashAlgorithm("sha256");

    //  Specify the signed attributes to be included.
    //  (This is what makes it CAdES-BES compliant.)
    CkJsonObject jsonSignedAttrs = new CkJsonObject();
    jsonSignedAttrs.UpdateInt("contentType",1);
    jsonSignedAttrs.UpdateInt("signingTime",1);
    jsonSignedAttrs.UpdateInt("messageDigest",1);
    jsonSignedAttrs.UpdateInt("signingCertificateV2",1);
    crypt.put_SigningAttributes(jsonSignedAttrs.emit());

    String inFile = "qa_data/xml/IT01234567890_11002.xml";
    String sigFile = "qa_output/IT01234567890_11002.xml.p7m";

    //  Create the CAdES-BES signature, which contains the original data.
    success = crypt.CreateP7M(inFile,sigFile);
    if (success == false) {
        System.out.println(crypt.lastErrorText());
        return;
        }

    System.out.println("Success.");
  }
}