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(Java) Sign a PDF using IDPrime MD T=1 SmartCardSee more PDF Signatures ExamplesThis example demonstrates how to a sign a PDF using a IDPrime MD T=1 smart card, which requires more specific PIN roles.
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[]) { // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. CkPdf pdf = new CkPdf(); // Load a PDF to be signed. // The "hello.pdf" is available at https://chilkatsoft.com/hello.pdf boolean success = pdf.LoadFile("qa_data/pdf/hello.pdf"); if (success == false) { System.out.println(pdf.lastErrorText()); return; } // Options for signing are specified in JSON. CkJsonObject json = new CkJsonObject(); // In most cases, the signingCertificateV2 and signingTime attributes are required. json.UpdateInt("signingCertificateV2",1); json.UpdateInt("signingTime",1); // Put the signature on page 1, top left json.UpdateInt("page",1); json.UpdateString("appearance.y","top"); json.UpdateString("appearance.x","left"); // Use a font scale of 10.0 json.UpdateString("appearance.fontScale","10.0"); // In this example, the appearance of the digital signature will contain three lines: // 1) The signing certificate's common name // 2) The current date/time // 3) Some arbitrary text. // The keyword "cert_cn" is replaced with the Certificate's Subject Common Name. // The keyword "current_dt" is replaced with the current date/time. // Any number of appearance text lines can be added. json.UpdateString("appearance.text[0]","Digitally signed by: cert_cn"); json.UpdateString("appearance.text[1]","current_dt"); json.UpdateString("appearance.text[2]","The crazy brown fox jumps over the lazy dog."); CkCert cert = new CkCert(); // Provide the smart card PIN's for both the "user" and the signing PIN, which is role "3". // These PINs may be the same. // If the PIN is not explicitly provided here, the Windows OS should // display a dialog for the PIN. cert.put_SmartCardPin("{ \"user\":\"0000\", \"3\":\"12345678\" }"); // Use a certificate on an IDPrime MD T=1 smart card. success = cert.LoadFromSmartcard(""); if (success == false) { System.out.println(cert.lastErrorText()); return; } // Tell the pdf object to use the certificate for signing. success = pdf.SetSigningCert(cert); if (success == false) { System.out.println(pdf.lastErrorText()); return; } success = pdf.SignPdf(json,"qa_output/hello_signed_hsm.pdf"); if (success == false) { System.out.println(pdf.lastErrorText()); return; } System.out.println("The PDF has been successfully cryptographically signed using an HSM."); } } |
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