Example usage for org.apache.commons.codec.binary Hex encode

Introduction

In this page you can find the example usage for org.apache.commons.codec.binary Hex encode.

Prototype

public Object encode(Object object) throws ClassCastException, UnsupportedEncodingException 

Source Link

Document

Converts a String or an array of bytes into an array of characters representing the hexadecimal values of each byte in order.

Usage

From source file:corelyzer.util.StringUtility.java

public static String getSHASum(final String aString) {
    String hash;/*from ww  w  . ja v  a 2  s . c o m*/

    try {
        MessageDigest md = MessageDigest.getInstance("SHA");
        md.update(aString.getBytes());

        Hex hex = new Hex();
        hash = new String(hex.encode(md.digest()));
    } catch (NoSuchAlgorithmException e) {
        System.err.println("---> [Error] NoSuchAlgorithmException!");
        hash = "no-sha";
    }

    return hash;
}

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From source file:fedorax.server.module.storage.lowlevel.irods.IrodsIFileSystem.java

private static final CopyResult stream2streamCopy(InputStream in, OutputStream out) throws IOException {
    int BUFFER_SIZE = 8192;
    LOG.debug("IrodsIFileSystem.stream2streamCopy() start");
    CopyResult result = new CopyResult();
    byte[] buffer = new byte[BUFFER_SIZE];
    int bytesRead = 0;
    try {/*from   w  ww  . java  2 s  .c  o  m*/
        MessageDigest messageDigest;
        try {
            messageDigest = MessageDigest.getInstance("MD5");
        } catch (NoSuchAlgorithmException e) {
            throw new IOException("Cannot compare checksums without MD5 algorithm.", e);
        }
        messageDigest.reset();
        while ((bytesRead = in.read(buffer, 0, BUFFER_SIZE)) != -1) {
            messageDigest.update(buffer, 0, bytesRead);
            result.size = result.size + bytesRead;
            // for transport failure test add the following line:
            // buffer[0] = '!';
            out.write(buffer, 0, bytesRead);
        }
        out.flush();
        Hex hex = new Hex();
        result.md5 = new String(hex.encode(messageDigest.digest()));
    } catch (IOException e) {
        LOG.error("Unexpected", e);
        throw e;
    } finally {
        try {
            out.close();
        } catch (IOException e) {
            LOG.warn("Exception while trying to close jargon output stream", e);
        }
    }
    LOG.debug("IrodsIFileSystem.stream2streamCopy() end");
    return result;
}

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From source file:com.cloudant.sync.query.IndexCreator.java

/**
 * Iterate candidate indexNames generated from the indexNameRandom generator
 * until we find one which doesn't already exist.
 *
 * We make sure the generated name is not an index already by the list
 * of index names returned by {@link #listIndexesInDatabaseQueue()} method.
 * This is because we avoid knowing about how indexes are stored in SQLite, however
 * this means that it is not thread safe, it is possible for a new index with the same
 * name to be created after a copy of the indexes has been taken from the database.
 *
 * We allow up to 200 random name generations, which should give us many millions
 * of indexes before a name fails to be generated and makes sure this method doesn't
 * loop forever./*  w w w .j  a va 2 s  .  c o  m*/
 *
 * @param existingIndexNames The names of the indexes that exist in the database.
 *
 * @return The generated index name or {@code null} if it failed.
 *
 */
private static String generateIndexName(Set<String> existingIndexNames)
        throws ExecutionException, InterruptedException {

    String indexName = null;
    Hex hex = new Hex();

    int tries = 0;
    byte[] randomBytes = new byte[20];
    while (tries < 200 && indexName == null) {
        indexNameRandom.nextBytes(randomBytes);
        String candidate = new String(hex.encode(randomBytes), Charset.forName("UTF-8"));

        if (!existingIndexNames.contains(candidate)) {
            indexName = candidate;
        }
        tries++;
    }

    if (indexName != null) {
        return indexName;
    } else {
        return null;
    }
}

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From source file:edu.ur.file.checksum.Md5ChecksumCalculator.java

/** 
 * Calculate the md5 checksum of the specified file.
 * //from   www .j  ava 2  s.c o m
 * @see edu.ur.file.db.ChecksumCalculator#calculate(java.io.File)
 */
public String calculate(File f) {

    String checksum = null;
    try {
        InputStream fis = new FileInputStream(f);

        byte[] buffer = new byte[1024];
        MessageDigest messageDigest = MessageDigest.getInstance("MD5");
        int numRead;
        do {
            numRead = fis.read(buffer);
            if (numRead > 0) {
                messageDigest.update(buffer, 0, numRead);
            }
        } while (numRead != -1);
        fis.close();
        byte[] value = messageDigest.digest();

        Hex hex = new Hex();
        checksum = new String(hex.encode(value));
    } catch (Exception e) {
        throw new RuntimeException(e);
    }

    return checksum;

}

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From source file:edu.unc.lib.dl.util.Checksum.java

/**
 * Get the checksum for the passed in byte array
 * //from   w ww  . j a v  a 2s.co m
 * @param byteArray
 *            must not be null
 * @return byte array containing checksum
 */
public String getChecksum(byte[] byteArray) {
    messageDigest.reset();
    messageDigest.update(byteArray);
    Hex hex = new Hex();
    return new String(hex.encode(messageDigest.digest()));
}

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From source file:edu.unc.lib.dl.util.Checksum.java

/**
 * Get the checksum for the passed in byte array
 * /*  w  w  w .j ava2s  .c  o m*/
 * @param byteArray
 *            must not be null
 * @return byte array containing checksum
 */
public String getChecksum(InputStream in) throws IOException {
    messageDigest.reset();
    try (BufferedInputStream bis = new BufferedInputStream(in, 1024)) {
        byte[] buffer = new byte[1024];
        int numRead;
        do {
            numRead = bis.read(buffer);
            if (numRead > 0) {
                messageDigest.update(buffer, 0, numRead);
            }
        } while (numRead != -1);
    }
    Hex hex = new Hex();
    return new String(hex.encode(messageDigest.digest()));
}

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From source file:dk.hlyh.hudson.plugins.mavenrepo.repo.ChecksumFile.java

@Override
public void sendResponse(StaplerRequest req, StaplerResponse rsp) throws IOException {
    FileInputStream fis = new FileInputStream(filename);
    try {//www . j ava 2s.  c  o  m
        MessageDigest messageDigest = MessageDigest.getInstance(algorithm);
        messageDigest.reset();

        // Stream the file contents to the MessageDigest.
        byte[] buffer = new byte[STREAMING_BUFFER_SIZE];
        int size = fis.read(buffer, 0, STREAMING_BUFFER_SIZE);
        while (size >= 0) {
            messageDigest.update(buffer, 0, size);
            size = fis.read(buffer, 0, STREAMING_BUFFER_SIZE);
        }

        Hex encoder = new Hex();
        byte[] encodeded = encoder.encode(messageDigest.digest());

        rsp.setContentType("text/plain");
        rsp.getOutputStream().write(encodeded);

    } catch (NoSuchAlgorithmException ex) {
        log.warn("Could not generate '" + algorithm + "' checksum for: " + filename, ex);
        rsp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
    } finally {
        try {
            fis.close();
        } catch (IOException e) {
            /* ignored */
        }
    }
}

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From source file:com.lightboxtechnologies.spectrum.HexWritable.java

@Override
public String toString() {
    final Hex hex = new Hex();
    final byte[] bytes = new byte[getLength()];
    System.arraycopy(getBytes(), 0, bytes, 0, bytes.length);
    return new String(hex.encode(bytes));
}

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From source file:co.cask.hydrator.plugin.EncoderTest.java

@Test
public void testHEXEncoder() throws Exception {
    String test = "This is a test for testing hex encoding";
    Transform<StructuredRecord, StructuredRecord> transform = new Encoder(
            new Encoder.Config("a:HEX", OUTPUT.toString()));
    transform.initialize(null);// w w w.  j a v a  2s  . com

    MockEmitter<StructuredRecord> emitter = new MockEmitter<>();
    transform.transform(StructuredRecord.builder(INPUT).set("a", test).set("b", "2").set("c", "3").set("d", "4")
            .set("e", "5").build(), emitter);

    Hex hex = new Hex();
    byte[] expected = hex.encode(test.getBytes("UTF-8"));
    byte[] actual = emitter.getEmitted().get(0).get("a");
    Assert.assertEquals(2, emitter.getEmitted().get(0).getSchema().getFields().size());
    Assert.assertArrayEquals(expected, actual);
}

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From source file:co.cask.hydrator.plugin.DecoderTest.java

@Test
public void testHexDecoder() throws Exception {
    String test = "This is a test for testing hex decoding";
    Transform<StructuredRecord, StructuredRecord> encoder = new Encoder(
            new Encoder.Config("a:HEX", OUTPUT.toString()));
    encoder.initialize(null);//w  ww. j  ava  2s.c  o m

    MockEmitter<StructuredRecord> emitterEncoded = new MockEmitter<>();
    encoder.transform(StructuredRecord.builder(INPUT).set("a", test).set("b", "2").set("c", "3").set("d", "4")
            .set("e", "5").build(), emitterEncoded);

    Hex hex = new Hex();
    byte[] expected = hex.encode(test.getBytes("UTF-8"));
    byte[] actual = emitterEncoded.getEmitted().get(0).get("a");
    Assert.assertEquals(2, emitterEncoded.getEmitted().get(0).getSchema().getFields().size());
    Assert.assertArrayEquals(expected, actual);

    Transform<StructuredRecord, StructuredRecord> decoder = new Decoder(
            new Decoder.Config("a:HEX", OUTPUTSTR.toString()));
    decoder.initialize(null);
    MockEmitter<StructuredRecord> emitterDecoded = new MockEmitter<>();
    decoder.transform(emitterEncoded.getEmitted().get(0), emitterDecoded);
    Assert.assertEquals(2, emitterDecoded.getEmitted().get(0).getSchema().getFields().size());
    Assert.assertEquals(test, emitterDecoded.getEmitted().get(0).get("a"));
}

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