Examples of java.security.DigestOutputStream

java.security.DigestOutputStream
A transparent stream that updates the associated message digest using the bits going through the stream.
To complete the message digest computation, call one of the digest methods on the associated message digest after your calls to one of this digest ouput stream's {@link #write(int) write} methods.
It is possible to turn this stream on or off (see {@link #on(boolean) on}). When it is on, a call to one of the write methods results in an update on the message digest. But when it is off, the message digest is not updated. The default is for the stream to be on. @see MessageDigest @see DigestInputStream @version 1.32 05/11/17 @author Benjamin Renaud

        assert path != null : "Expect SWF path";


        zipOutputStream.putNextEntry(new ZipEntry(path));
        ISWFWriter swfWriter = swfWriterFactory.createSWFWriter(swf, 
                getLibrarySWFCompression(), enableDebug);
        final DigestOutputStream digestStream = getDigestOutputStream(library, zipOutputStream);
        swfWriter.writeTo(digestStream != null ? digestStream : zipOutputStream);
        swfWriter.close();
        zipOutputStream.closeEntry();
        
        if (digestStream != null)

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            DataIdentifier tempId = new DataIdentifier(temporary.getName());
            usesIdentifier(tempId);
            // Copy the stream to the temporary file and calculate the
            // stream length and the message digest of the stream
            MessageDigest digest = MessageDigest.getInstance(DIGEST);
            OutputStream output = new DigestOutputStream(new FileOutputStream(
                temporary), digest);
            try {
                length = IOUtils.copyLarge(input, output);
            } finally {
                output.close();
            }
            long currTime = System.currentTimeMillis();
            DataIdentifier identifier = new DataIdentifier(
                encodeHexString(digest.digest()));
            LOG.debug("SHA1 of [{}], length =[{}] took [{}]ms ",

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            DataIdentifier tempId = new DataIdentifier(temporary.getName());
            usesIdentifier(tempId);
            // Copy the stream to the temporary file and calculate the
            // stream length and the message digest of the stream
            MessageDigest digest = MessageDigest.getInstance(DIGEST);
            OutputStream output = new DigestOutputStream(new FileOutputStream(
                temporary), digest);
            try {
                length = IOUtils.copyLarge(input, output);
            } finally {
                output.close();
            }
            long currTime = System.currentTimeMillis();
            DataIdentifier identifier = new DataIdentifier(
                encodeHexString(digest.digest()));
            LOG.debug("SHA1 of [{}], length =[{}] took [{}]ms ",

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    private void renderPDF(String fo, String digestIn, String digestOut)
        throws Exception {
        FOUserAgent foUserAgent = fopFactory.newFOUserAgent();
        foUserAgent.setCreationDate(new Date(10000));
        MessageDigest outDigest = MessageDigest.getInstance("MD5");
        DigestOutputStream out =
            new DigestOutputStream(new ByteArrayOutputStream(), outDigest);
        Fop fop = fopFactory.newFop(MimeConstants.MIME_PDF, foUserAgent, out);
        InputSource source = new InputSource(new StringReader(fo));
        DigestFilter filter = new DigestFilter("MD5");
        filter.setParent(parserFactory.newSAXParser().getXMLReader());
        filter.setContentHandler(fop.getDefaultHandler());

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            usesIdentifier(tempId);
            // Copy the stream to the temporary file and calculate the
            // stream length and the message digest of the stream
            long length = 0;
            MessageDigest digest = MessageDigest.getInstance(DIGEST);
            OutputStream output = new DigestOutputStream(
                    new FileOutputStream(temporary), digest);
            try {
                length = IOUtils.copyLarge(input, output);
            } finally {
                output.close();
            }
            DataIdentifier identifier =
                    new DataIdentifier(encodeHexString(digest.digest()));
            File file;

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      //
      // Write out data
      //
      MessageDigest digester = MD5Hash.getDigester();
      FileOutputStream fout = new FileOutputStream(newFile);
      DigestOutputStream fos = new DigestOutputStream(fout, digester);
      DataOutputStream out = new DataOutputStream(fos);
      try {
        out.writeInt(HdfsConstants.LAYOUT_VERSION);
        // We use the non-locked version of getNamespaceInfo here since
        // the coordinating thread of saveNamespace already has read-locked

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      this.conf = conf;
      this.key = key;
      this.backupFile = newBackupFile();
      try {
        this.digest = MessageDigest.getInstance("MD5");
        this.backupStream = new BufferedOutputStream(new DigestOutputStream(
            new FileOutputStream(backupFile), this.digest));
      } catch (NoSuchAlgorithmException e) {
        LOG.warn("Cannot load MD5 digest algorithm," +
            "skipping message integrity check.", e);
        this.backupStream = new BufferedOutputStream(

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      //
      // Write out data
      //
      MessageDigest digester = MD5Hash.getDigester();
      FileOutputStream fout = new FileOutputStream(newFile);
      DigestOutputStream fos = new DigestOutputStream(fout, digester);
      DataOutputStream out = new DataOutputStream(fos);
      try {
        out.writeInt(HdfsConstants.LAYOUT_VERSION);
        // We use the non-locked version of getNamespaceInfo here since
        // the coordinating thread of saveNamespace already has read-locked

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            usesIdentifier(tempId);
            // Copy the stream to the temporary file and calculate the
            // stream length and the message digest of the stream
            long length = 0;
            MessageDigest digest = MessageDigest.getInstance(DIGEST);
            OutputStream output = new DigestOutputStream(
                    new FileOutputStream(temporary), digest);
            try {
                length = IOUtils.copyLarge(input, output);
            } finally {
                output.close();
            }
            DataIdentifier identifier = new DataIdentifier(digest.digest());
            File file;


            synchronized (this) {

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            temporary = newTemporaryFile();
            // Copy the stream to the temporary file and calculate the
            // stream length and the message digest of the stream
            long length = 0;
            MessageDigest digest = MessageDigest.getInstance(DIGEST);
            OutputStream output = new DigestOutputStream(
                    new FileOutputStream(temporary), digest);
            try {
                length = IOUtils.copyLarge(input, output);
            } finally {
                output.close();
            }
            DataIdentifier identifier = new DataIdentifier(digest.digest());
            File file;


            synchronized (this) {

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