Examples of DigestInputStream

java.security.DigestInputStream
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 input stream's {@link #read() read} 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 read 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.
Note that digest objects can compute only one digest (see {@link MessageDigest}), so that in order to compute intermediate digests, a caller should retain a handle onto the digest object, and clone it for each digest to be computed, leaving the orginal digest untouched. @see MessageDigest @see DigestOutputStream @version 1.38 05/11/17 @author Benjamin Renaud
org.bouncycastle.crypto.io.DigestInputStream
org.bouncycastle2.crypto.io.DigestInputStream

Examples of java.security.DigestInputStream

     * @throws NoSuchAlgorithmException
     */
    private String md5(InputStream is) throws IOException,
            NoSuchAlgorithmException {
        MessageDigest digest = MessageDigest.getInstance("MD5");
        DigestInputStream dis = new DigestInputStream(is, digest);


        byte[] buffer = new byte[1024];


        int read = dis.read(buffer);
        while (read > -1) {
            read = dis.read(buffer);
        }


        return new String(encodeHex(dis.getMessageDigest().digest()));
    }

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Examples of java.security.DigestInputStream

            out.println("  " + url);
            try {
                final String algorithm = "MD5";
                byte[] digest;
                MessageDigest md = MessageDigest.getInstance(algorithm);
                DigestInputStream in = new DigestInputStream(url.openStream(), md);
                try {
                    byte[] buf = new byte[8192];
                    int n;
                    do { n = in.read(buf); } while (n > 0);
                    digest = md.digest();
                } finally {
                    in.close();
                }
                StringBuilder sb = new StringBuilder();
                for (byte b: digest)
                    sb.append(String.format("%02x", b));
                out.println("  " + algorithm + " checksum: " + sb);

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Examples of java.security.DigestInputStream


    try {
      MessageDigest digest = MessageDigest.getInstance(algorithm);
      fileInputStream = new FileInputStream(file);


      DigestInputStream digestInputStream = new DigestInputStream(fileInputStream, digest);


      if(progressMeter != null){


        progressMeter.setStartTime();
        progressMeter.setFinish(file.length());
      }


      byte[] buffer = new byte[8192];


      int bytesRead = 1;


      if(progressMeter != null){


        while ((bytesRead = digestInputStream.read(buffer)) != -1){


          progressMeter.incrementCurrentPosition(bytesRead);
        }


      }else{


        while ((bytesRead = digestInputStream.read(buffer)) != -1){}
      }


      byte[] hash = digest.digest();


      if(progressMeter != null){

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Examples of java.security.DigestInputStream

            final MessageDigest md = MessageDigest.getInstance(CHECKSUM_TYPE);
            byte[] buf = new byte[CHECKSUM_BUFFER_SIZE];
            try {
              FileInputStream fis = new FileInputStream(jarFile);
              try {
                DigestInputStream dis = new DigestInputStream(fis, md);
                try {
                  while (dis.read(buf, 0, CHECKSUM_BUFFER_SIZE) != -1) {
                    // NOOP
                  }
                } finally {
                  dis.close();
                }
              } finally {
                fis.close();
              }
            } catch (IOException ioe) {

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Examples of java.security.DigestInputStream


    InputStream in = null;
    try{
      in = rex.getResolverRegistry().getInputStream(sloc.getURI());
      MessageDigest md = MessageDigest.getInstance("MD5");
      in = new DigestInputStream(in, md);
      byte[] buf = new byte[4096];
      int count;


      while((count = in.read(buf)) != -1){
        result.append(new java.lang.String(buf, 0, count));

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Examples of java.security.DigestInputStream

    
    InputStream in = null;
    try{
      in = ctx.getResolverRegistry().getInputStream(sloc.getURI());
      MessageDigest md = MessageDigest.getInstance("MD5");
      in = new DigestInputStream(in, md);
      byte[] buf = new byte[4096];
      int count;


      while((count = in.read(buf)) != -1){
        result.append(new java.lang.String(buf, 0, count));

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Examples of java.security.DigestInputStream

        MessageDigest md = MessageDigest.getInstance("SHA-256");


        // Use a digest inputstream as using byte arrays directly to compute the SHA-256 can
        // have big effects on memory consumption. I.e. you don't want to have to read the
        // entire resource in memory. We rather stream it through...
        DigestInputStream dis = new DigestInputStream(is, md);


        byte[] buffer = new byte[16384];
        while (dis.read(buffer) != -1) {
            // we just drain the stream here to compute the Message Digest
        }


        StringBuilder sb = new StringBuilder(64); // SHA-256 is always 64 hex characters
        for (byte b : md.digest())

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Examples of java.security.DigestInputStream

  private String readAndGetChecksum(File toRead, StringBuilder fileContent) {
    InputStream in = null; 
    try {
      MessageDigest md = MessageDigest.getInstance("MD5");
      in = new FileInputStream(toRead);
      in = new DigestInputStream(in, md);
      Reader rd = new InputStreamReader(in);
      char[] buf = new char[IOUtils.BUFFER_SIZE];
      int num = 0;
      while ((num = rd.read(buf, 0, buf.length)) != -1) {
        fileContent.append(buf, 0, num);

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Examples of java.security.DigestInputStream

    private static Checksum computeChecksum(File root, File file, MessageDigest digest) throws IOException {
        byte[] buf = new byte[1024 * 1024];
        int bytesRead = 0;
        FileInputStream fis = new FileInputStream(file);
        BufferedInputStream bis = new BufferedInputStream(fis);
        InputStream in = new DigestInputStream(bis, digest);


        /* Read in the entire file */
        do {
            bytesRead = in.read(buf);
        } while (bytesRead != -1);
        in.close();


        /* Compute the checksum with the digest */
        byte[] byteChecksum = digest.digest();
        digest.reset();

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Examples of java.security.DigestInputStream

        }


        byte[] buf = new byte[1024 * 1024];
        int bytesRead = 0;
        BufferedInputStream bis = new BufferedInputStream(is);
        InputStream in = new DigestInputStream(bis, digest);


        /* Read in the entire file */
        do {
            bytesRead = in.read(buf);
        } while (bytesRead != -1);
        in.close();


        /* Compute the checksum with the digest */
        byte[] byteChecksum = digest.digest();
        digest.reset();

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