Java

A3 Certificate Sign PDF to pdf.p7s

See more CAdES Examples

Demonstrates how to use an A3/A4 certificate on a smartcard or hardware token to convert a PDF into a .p7s file that contains the PDF within a PKCS7 signature (the .p7s format). Chilkat2 Java

import com.chilkatsoft.chilkat2.Cert;
import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Crypt2;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example assumes the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        Crypt2 crypt = new Crypt2();

        Cert cert = new Cert();

        // If the smartcard or token requires a PIN, we can set it here to avoid the dialog...
        cert.setSmartCardPin("000000");

        try {
            cert.loadFromSmartcard("");

            // Tell the crypt component to use this cert.
            crypt.setSigningCert(cert);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            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.setCadesEnabled(true);

        crypt.setHashAlgorithm("sha256");

        // We can sign any type of file, creating a .p7s as output.
        // The .p7s contains the signature and also embeds the data of the file that is signed.
        String inFile = "qa_data/pdf/sample.pdf";
        String p7sFile = "qa_output/sample.pdf.p7s";

        // Create the CAdES-BES attached signature, which contains the original data.
        // Note: Chilkat's function naming is not accurate.  CreateP7M creates a PKCS7 signature where the signed file
        // is contained within the signature.  CreateP7S creates a detached PKCS7 signature where the signed file
        // is NOT contained within the signature.  We want the data to be contained in the signature, therefore
        // we call CreateP7M even though we are naming our output file .p7s.
        try {
            crypt.createP7M(inFile, p7sFile);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // Verify the .p7s file and extract the original file from the .p7s.
        String extractedToFilePath = "qa_output/sample.pdf";
        try {
            crypt.verifyP7M(p7sFile, extractedToFilePath);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

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