Java Code Examples for com.itextpdf.text.pdf.PdfStamper#createSignature()

@Test
public void signCertify2gNoAppend() throws IOException, DocumentException, GeneralSecurityException
{
    String filepath = "src/test/resources/mkl/testarea/itext5/signature/2g.pdf";
    String digestAlgorithm = "SHA512";
    CryptoStandard subfilter = CryptoStandard.CMS;

    // Creating the reader and the stamper
    PdfReader reader = new PdfReader(filepath, null, true);
    FileOutputStream os = new FileOutputStream(new File(RESULT_FOLDER, "2g-certified-noAppend.pdf"));
    PdfStamper stamper =
        PdfStamper.createSignature(reader, os, '\0', RESULT_FOLDER);
    // Creating the appearance
    PdfSignatureAppearance appearance = stamper.getSignatureAppearance();
    appearance.setCertificationLevel(PdfSignatureAppearance.CERTIFIED_NO_CHANGES_ALLOWED);
    appearance.setReason("reason");
    appearance.setLocation("location");
    appearance.setVisibleSignature(new Rectangle(36, 748, 144, 780), 1, "sig");
    // Creating the signature
    ExternalSignature pks = new PrivateKeySignature(pk, digestAlgorithm, "BC");
    ExternalDigest digest = new BouncyCastleDigest();
    MakeSignature.signDetached(appearance, digest, pks, chain,
        null, null, null, 0, subfilter);
}
 

/**
 * <a href="http://stackoverflow.com/questions/30449348/signing-pdf-memory-consumption">
 * Signing PDF - memory consumption
 * </a>
 * <br>
 * <a href="http://50mpdf.tk/50m.pdf">50m.pdf</a>
 * <p>
 * {@link #sign50MNaive()} tests the naive approach,
 * {@link #sign50MBruno()} tests Bruno's original approach,
 * {@link #sign50MBrunoPartial()} tests Bruno's approach with partial reading,
 * {@link #sign50MBrunoAppend()} tests Bruno's approach with append mode, and
 * {@link #sign50MBrunoPartialAppend()} tests Bruno's approach with partial reading and append mode.
 * </p>
 */
// runs with -Xmx240m, fails with -Xmx230m
@Test
public void sign50MNaive() throws IOException, DocumentException, GeneralSecurityException
{
    String filepath = "src/test/resources/mkl/testarea/itext5/signature/50m-signedNaive.pdf";//50m.pdf
    String digestAlgorithm = "SHA512";
    CryptoStandard subfilter = CryptoStandard.CMS;

    // Creating the reader and the stamper
    PdfReader reader = new PdfReader(filepath);
    FileOutputStream os = new FileOutputStream(new File(RESULT_FOLDER, "53m-signedNaive.pdf"));
    PdfStamper stamper =
        PdfStamper.createSignature(reader, os, '\0',RESULT_FOLDER,true);
    // Creating the appearance
    PdfSignatureAppearance appearance = stamper.getSignatureAppearance();
    appearance.setReason("reason");
    appearance.setLocation("location");
    appearance.setVisibleSignature(new Rectangle(56, 648, 124, 780), 1, "sig2");
    // Creating the signature
    ExternalSignature pks = new PrivateKeySignature(pk, digestAlgorithm, "BC");
    ExternalDigest digest = new BouncyCastleDigest();
    MakeSignature.signDetached(appearance, digest, pks, chain,
        null, null, null, 0, subfilter);
}
 

@Test
public void sign50MBruno() throws IOException, DocumentException, GeneralSecurityException
{
    String filepath = "src/test/resources/mkl/testarea/itext5/signature/50m.pdf";
    String digestAlgorithm = "SHA512";
    CryptoStandard subfilter = CryptoStandard.CMS;

    // Creating the reader and the stamper
    PdfReader reader = new PdfReader(filepath);
    FileOutputStream os = new FileOutputStream(new File(RESULT_FOLDER, "50m-signedBruno.pdf"));
    PdfStamper stamper =
        PdfStamper.createSignature(reader, os, '\0', RESULT_FOLDER, false);
    // Creating the appearance
    PdfSignatureAppearance appearance = stamper.getSignatureAppearance();
    appearance.setReason("reason");
    appearance.setLocation("location");
    appearance.setVisibleSignature(new Rectangle(36, 748, 144, 780), 1, "sig");
    // Creating the signature
    ExternalSignature pks = new PrivateKeySignature(pk, digestAlgorithm, "BC");
    ExternalDigest digest = new BouncyCastleDigest();
    MakeSignature.signDetached(appearance, digest, pks, chain,
        null, null, null, 0, subfilter);
}
 

@Test
public void sign50MBrunoPartial() throws IOException, DocumentException, GeneralSecurityException
{
    String filepath = "src/test/resources/mkl/testarea/itext5/signature/50m.pdf";
    String digestAlgorithm = "SHA512";
    CryptoStandard subfilter = CryptoStandard.CMS;

    // Creating the reader and the stamper
    PdfReader reader = new PdfReader(filepath, null, true);
    FileOutputStream os = new FileOutputStream(new File(RESULT_FOLDER, "50m-signedBrunoPartial.pdf"));
    PdfStamper stamper =
        PdfStamper.createSignature(reader, os, '\0', RESULT_FOLDER, false);
    // Creating the appearance
    PdfSignatureAppearance appearance = stamper.getSignatureAppearance();
    appearance.setReason("reason");
    appearance.setLocation("location");
    appearance.setVisibleSignature(new Rectangle(36, 748, 144, 780), 1, "sig");
    // Creating the signature
    ExternalSignature pks = new PrivateKeySignature(pk, digestAlgorithm, "BC");
    ExternalDigest digest = new BouncyCastleDigest();
    MakeSignature.signDetached(appearance, digest, pks, chain,
        null, null, null, 0, subfilter);
}
 

@Test
public void sign50MBrunoAppend() throws IOException, DocumentException, GeneralSecurityException
{
    String filepath = "src/test/resources/mkl/testarea/itext5/signature/50m.pdf";
    String digestAlgorithm = "SHA512";
    CryptoStandard subfilter = CryptoStandard.CMS;

    // Creating the reader and the stamper
    PdfReader reader = new PdfReader(filepath);
    FileOutputStream os = new FileOutputStream(new File(RESULT_FOLDER, "50m-signedBrunoAppend.pdf"));
    PdfStamper stamper =
        PdfStamper.createSignature(reader, os, '\0', RESULT_FOLDER, true);
    // Creating the appearance
    PdfSignatureAppearance appearance = stamper.getSignatureAppearance();
    appearance.setReason("reason");
    appearance.setLocation("location");
    appearance.setVisibleSignature(new Rectangle(36, 748, 144, 780), 1, "sig");
    // Creating the signature
    ExternalSignature pks = new PrivateKeySignature(pk, digestAlgorithm, "BC");
    ExternalDigest digest = new BouncyCastleDigest();
    MakeSignature.signDetached(appearance, digest, pks, chain,
        null, null, null, 0, subfilter);
}
 

@Test
public void sign50MBrunoPartialAppend() throws IOException, DocumentException, GeneralSecurityException
{
    String filepath = "src/test/resources/mkl/testarea/itext5/signature/50m.pdf";
    String digestAlgorithm = "SHA512";
    CryptoStandard subfilter = CryptoStandard.CMS;

    // Creating the reader and the stamper
    PdfReader reader = new PdfReader(filepath, null, true);
    FileOutputStream os = new FileOutputStream(new File(RESULT_FOLDER, "50m-signedBrunoPartialAppend.pdf"));
    PdfStamper stamper =
        PdfStamper.createSignature(reader, os, '\0', RESULT_FOLDER, true);
    // Creating the appearance
    PdfSignatureAppearance appearance = stamper.getSignatureAppearance();
    appearance.setReason("reason");
    appearance.setLocation("location");
    appearance.setVisibleSignature(new Rectangle(36, 748, 144, 780), 1, "sig");
    // Creating the signature
    ExternalSignature pks = new PrivateKeySignature(pk, digestAlgorithm, "BC");
    ExternalDigest digest = new BouncyCastleDigest();
    MakeSignature.signDetached(appearance, digest, pks, chain,
        null, null, null, 0, subfilter);
}
 

/**
 * <a href="http://stackoverflow.com/questions/30526254/sign-concatenated-pdf-in-append-mode-with-certified-no-changes-allowed">
 * Sign concatenated PDF in append mode with CERTIFIED_NO_CHANGES_ALLOWED
 * </a>
 * <br>
 * <a href="https://www.dropbox.com/s/lea6r9fup6th44c/test_pdf.zip?dl=0">test_pdf.zip</a>
 *
 * {@link #signCertifyG()} certifies g.pdf, OK
 * {@link #sign2g()} merely signs 2g.pdf, OK
 * {@link #signCertify2gNoAppend()} certifies 2g.pdf but not in append mode, OK
 * {@link #tidySignCertify2g()} first tidies, then certifies 2g.pdf, OK
 * {@link #signCertify2g()} certifies 2g.pdf, Adobe says invalid
 * {@link #signCertify2gFix()} certifies 2g-fix.pdf, OK!
 *
 * 2g-fix.pdf is a patched version of 2g.pdf with a valid /Size trailer entry
 * and a valid, single-sectioned cross reference table
 */
@Test
public void signCertifyG() throws IOException, DocumentException, GeneralSecurityException
{
    String filepath = "src/test/resources/mkl/testarea/itext5/signature/g.pdf";
    String digestAlgorithm = "SHA512";
    CryptoStandard subfilter = CryptoStandard.CMS;

    // Creating the reader and the stamper
    PdfReader reader = new PdfReader(filepath, null, true);
    FileOutputStream os = new FileOutputStream(new File(RESULT_FOLDER, "g-certified.pdf"));
    PdfStamper stamper =
        PdfStamper.createSignature(reader, os, '\0', RESULT_FOLDER, true);
    // Creating the appearance
    PdfSignatureAppearance appearance = stamper.getSignatureAppearance();
    appearance.setCertificationLevel(PdfSignatureAppearance.CERTIFIED_NO_CHANGES_ALLOWED);
    appearance.setReason("reason");
    appearance.setLocation("location");
    appearance.setVisibleSignature(new Rectangle(36, 748, 144, 780), 1, "sig");
    // Creating the signature
    ExternalSignature pks = new PrivateKeySignature(pk, digestAlgorithm, "BC");
    ExternalDigest digest = new BouncyCastleDigest();
    MakeSignature.signDetached(appearance, digest, pks, chain,
        null, null, null, 0, subfilter);
}
 

@Test
public void sign2g() throws IOException, DocumentException, GeneralSecurityException
{
    String filepath = "src/test/resources/mkl/testarea/itext5/signature/2g.pdf";
    String digestAlgorithm = "SHA512";
    CryptoStandard subfilter = CryptoStandard.CMS;

    // Creating the reader and the stamper
    PdfReader reader = new PdfReader(filepath, null, true);
    FileOutputStream os = new FileOutputStream(new File(RESULT_FOLDER, "2g-signed.pdf"));
    PdfStamper stamper =
        PdfStamper.createSignature(reader, os, '\0', RESULT_FOLDER, true);
    // Creating the appearance
    PdfSignatureAppearance appearance = stamper.getSignatureAppearance();
    //appearance.setCertificationLevel(PdfSignatureAppearance.CERTIFIED_NO_CHANGES_ALLOWED);
    appearance.setReason("reason");
    appearance.setLocation("location");
    appearance.setVisibleSignature(new Rectangle(36, 748, 144, 780), 1, "sig");
    // Creating the signature
    ExternalSignature pks = new PrivateKeySignature(pk, digestAlgorithm, "BC");
    ExternalDigest digest = new BouncyCastleDigest();
    MakeSignature.signDetached(appearance, digest, pks, chain,
        null, null, null, 0, subfilter);
}
 

@Test
public void signCertify2g() throws IOException, DocumentException, GeneralSecurityException
{
    String filepath = "src/test/resources/mkl/testarea/itext5/signature/2g.pdf";
    String digestAlgorithm = "SHA512";
    CryptoStandard subfilter = CryptoStandard.CMS;

    // Creating the reader and the stamper
    PdfReader reader = new PdfReader(filepath, null, true);
    FileOutputStream os = new FileOutputStream(new File(RESULT_FOLDER, "2g-certified.pdf"));
    PdfStamper stamper =
        PdfStamper.createSignature(reader, os, '\0', RESULT_FOLDER, true);
    // Creating the appearance
    PdfSignatureAppearance appearance = stamper.getSignatureAppearance();
    appearance.setCertificationLevel(PdfSignatureAppearance.CERTIFIED_NO_CHANGES_ALLOWED);
    appearance.setReason("reason");
    appearance.setLocation("location");
    appearance.setVisibleSignature(new Rectangle(36, 748, 144, 780), 1, "sig");
    // Creating the signature
    ExternalSignature pks = new PrivateKeySignature(pk, digestAlgorithm, "BC");
    ExternalDigest digest = new BouncyCastleDigest();
    MakeSignature.signDetached(appearance, digest, pks, chain,
        null, null, null, 0, subfilter);
}
 

@Test
public void signCertify2gFix() throws IOException, DocumentException, GeneralSecurityException
{
    String filepath = "src/test/resources/mkl/testarea/itext5/signature/2g-fix.pdf";
    String digestAlgorithm = "SHA512";
    CryptoStandard subfilter = CryptoStandard.CMS;

    // Creating the reader and the stamper
    PdfReader reader = new PdfReader(filepath, null, true);
    FileOutputStream os = new FileOutputStream(new File(RESULT_FOLDER, "2g-fix-certified.pdf"));
    PdfStamper stamper =
        PdfStamper.createSignature(reader, os, '\0', RESULT_FOLDER, true);
    // Creating the appearance
    PdfSignatureAppearance appearance = stamper.getSignatureAppearance();
    appearance.setCertificationLevel(PdfSignatureAppearance.CERTIFIED_NO_CHANGES_ALLOWED);
    appearance.setReason("reason");
    appearance.setLocation("location");
    appearance.setVisibleSignature(new Rectangle(36, 748, 144, 780), 1, "sig");
    // Creating the signature
    ExternalSignature pks = new PrivateKeySignature(pk, digestAlgorithm, "BC");
    ExternalDigest digest = new BouncyCastleDigest();
    MakeSignature.signDetached(appearance, digest, pks, chain,
        null, null, null, 0, subfilter);
}
 

public void C2_01_SignHelloWorld_sign(String src, String dest, Certificate[] chain, PrivateKey pk, String digestAlgorithm, String provider, CryptoStandard subfilter, String reason, String location)
        throws GeneralSecurityException, IOException, DocumentException {
    // Creating the reader and the stamper
    PdfReader reader = new PdfReader(src);
    FileOutputStream os = new FileOutputStream(dest);
    PdfStamper stamper = PdfStamper.createSignature(reader, os, '\0');
    // Creating the appearance
    PdfSignatureAppearance appearance = stamper.getSignatureAppearance();
    appearance.setReason(reason);
    appearance.setLocation(location);
    appearance.setVisibleSignature(new Rectangle(36, 748, 144, 780), 1, "sig");
    // Creating the signature
    ExternalDigest digest = new BouncyCastleDigest();
    ExternalSignature signature = new PrivateKeySignature(pk, digestAlgorithm, provider);
    MakeSignature.signDetached(appearance, digest, signature, chain, null, null, null, 0, subfilter);
}
 

@Test
public void sign2274_2007_H_PROVISIONAL_multifield() throws IOException, DocumentException, GeneralSecurityException
{
    String filepath = "src/test/resources/mkl/testarea/itext5/signature/2274_2007_H_PROVISIONAL - multifield.pdf";
    String digestAlgorithm = "SHA512";
    CryptoStandard subfilter = CryptoStandard.CMS;

    // Creating the reader and the stamper
    PdfReader reader = new PdfReader(filepath, null, true);
    FileOutputStream os = new FileOutputStream(new File(RESULT_FOLDER, "2274_2007_H_PROVISIONAL - multifield-signed.pdf"));
    PdfStamper stamper =
        PdfStamper.createSignature(reader, os, '\0', RESULT_FOLDER, true);
    // Creating the appearance
    PdfSignatureAppearance appearance = stamper.getSignatureAppearance();
    //appearance.setCertificationLevel(PdfSignatureAppearance.CERTIFIED_NO_CHANGES_ALLOWED);
    appearance.setReason("reason");
    appearance.setLocation("location");
    appearance.setVisibleSignature("IntSig1");
    // Creating the signature
    ExternalSignature pks = new PrivateKeySignature(pk, digestAlgorithm, "BC");
    ExternalDigest digest = new BouncyCastleDigest();
    MakeSignature.signDetached(appearance, digest, pks, chain,
        null, null, null, 0, subfilter);
}
 

/**
 * <a href="http://stackoverflow.com/questions/32818522/itextsharp-setvisiblesignature-not-working-as-expected">
 * ITextSharp SetVisibleSignature not working as expected
 * </a>
 * <p>
 * The issue observed by the OP (user2699460) occurs since iText(Sharp) 5.5.7
 * both of iText and iTextSharp.
 * </p>
 * <p>
 * The file signed in this sample, test-2-user2699460-signed.pdf, has been created
 * as intermediary result using a simplified version of the OP's c# code. 
 * </p>
 */
@Test
public void signTest_2_user2699460() throws IOException, DocumentException, GeneralSecurityException
{
    String filepath = "src/test/resources/mkl/testarea/itext5/signature/test-2-user2699460.pdf";
    String digestAlgorithm = "SHA512";
    CryptoStandard subfilter = CryptoStandard.CMS;

    // Creating the reader and the stamper
    PdfReader reader = new PdfReader(filepath, null, true);
    FileOutputStream os = new FileOutputStream(new File(RESULT_FOLDER, "test-2-user2699460-signed.pdf"));
    PdfStamper stamper =
        PdfStamper.createSignature(reader, os, '\0', RESULT_FOLDER, true);
    // Creating the appearance
    PdfSignatureAppearance appearance = stamper.getSignatureAppearance();
    //appearance.setCertificationLevel(PdfSignatureAppearance.CERTIFIED_NO_CHANGES_ALLOWED);
    appearance.setReason("reason");
    appearance.setLocation("location");
    appearance.setVisibleSignature("Bunker");
    // Creating the signature
    ExternalSignature pks = new PrivateKeySignature(pk, digestAlgorithm, "BC");
    ExternalDigest digest = new BouncyCastleDigest();
    MakeSignature.signDetached(appearance, digest, pks, chain,
        null, null, null, 0, subfilter);
}
 

public PDFManager(byte[] pdfData, X509Certificate cert) throws Exception {
    reader = new PdfReader(pdfData);
    bout = new ByteArrayOutputStream();
    PdfStamper stp = PdfStamper.createSignature(reader, bout, '\0', null, true);
    numPages = reader.getNumberOfPages();
    x509Certificate = cert;
    sap = stp.getSignatureAppearance();
}
 

/**
 * <a href="https://stackoverflow.com/questions/45062602/itext-pdfappearence-issue">
 * Text - PDFAppearence issue
 * </a>
 * <p>
 * This test shows how one can create a custom signature layer 2.
 * As the OP of the question at hand mainly wants to generate a
 * pure DESCRIPTION appearance that uses the whole area, we here
 * essentially copy the PdfSignatureAppearance.getAppearance code
 * for generating layer 2 in pure DESCRIPTION mode and apply it
 * to a plain pre-fetched layer 2.
 * </p>
 */
@Test
public void signWithCustomLayer2() throws IOException, DocumentException, GeneralSecurityException
{
    String digestAlgorithm = "SHA512";
    CryptoStandard subfilter = CryptoStandard.CMS;

    try (   InputStream resource = getClass().getResourceAsStream("/mkl/testarea/itext5/extract/test.pdf")  )
    {
        PdfReader reader = new PdfReader(resource);
        FileOutputStream os = new FileOutputStream(new File(RESULT_FOLDER, "test-customLayer2.pdf"));
        PdfStamper stamper = PdfStamper.createSignature(reader, os, '\0');

        PdfSignatureAppearance appearance = stamper.getSignatureAppearance();
        appearance.setReason("reason");
        appearance.setLocation("location");
        appearance.setVisibleSignature(new Rectangle(36, 748, 144, 780), 1, "sig");

        // This essentially is the PdfSignatureAppearance.getAppearance code
        // for generating layer 2 in pure DESCRIPTION mode applied to a plain
        // pre-fetched layer 2.
        // vvvvv
        PdfTemplate layer2 = appearance.getLayer(2);
        String text = "We're using iText to put a text inside a signature placeholder in a PDF. "
                + "We use a code snippet similar to this to define the Signature Appearence.\n"
                + "Everything works fine, but the signature text does not fill all the signature "
                + "placeholder area as expected by us, but the area filled seems to have an height "
                + "that is approximately the 70% of the available space.\n"
                + "As a result, sometimes especially if the length of the signature text is quite "
                + "big, the signature text does not fit in the placeholder and the text is striped "
                + "away.";
        Font font = new Font();
        float size = font.getSize();
        final float MARGIN = 2;
        Rectangle dataRect = new Rectangle(
                MARGIN,
                MARGIN,
                appearance.getRect().getWidth() - MARGIN,
                appearance.getRect().getHeight() - MARGIN);
        if (size <= 0) {
            Rectangle sr = new Rectangle(dataRect.getWidth(), dataRect.getHeight());
            size = ColumnText.fitText(font, text, sr, 12, appearance.getRunDirection());
        }
        ColumnText ct = new ColumnText(layer2);
        ct.setRunDirection(appearance.getRunDirection());
        ct.setSimpleColumn(new Phrase(text, font), dataRect.getLeft(), dataRect.getBottom(), dataRect.getRight(), dataRect.getTop(), size, Element.ALIGN_LEFT);
        ct.go();
        // ^^^^^

        ExternalSignature pks = new PrivateKeySignature(pk, digestAlgorithm, "BC");
        ExternalDigest digest = new BouncyCastleDigest();
        MakeSignature.signDetached(appearance, digest, pks, chain, null, null, null, 0, subfilter);
    }
}