Example usage for java.security DigestInputStream DigestInputStream

Introduction

In this page you can find the example usage for java.security DigestInputStream DigestInputStream.

Prototype

public DigestInputStream(InputStream stream, MessageDigest digest) 

Source Link

Document

Creates a digest input stream, using the specified input stream and message digest.

Usage

From source file:org.springframework.integration.aws.core.AWSCommonUtils.java

/**
 * Generates the MD5 hash of the file provided
 * @param file/*from  w  w w  .  j  a v a 2  s  .  co m*/
 */
public static byte[] getContentsMD5AsBytes(File file) {

    DigestInputStream din = null;
    final byte[] digestToReturn;

    try {
        BufferedInputStream bin = new BufferedInputStream(new FileInputStream(file), 32768);
        din = new DigestInputStream(bin, MessageDigest.getInstance("MD5"));
        //Just to update the digest
        byte[] dummy = new byte[4096];
        for (int i = 1; i > 0; i = din.read(dummy))
            ;
        digestToReturn = din.getMessageDigest().digest();
    } catch (NoSuchAlgorithmException e) {
        throw new IllegalStateException("Caught Exception while generating a MessageDigest instance", e);
    } catch (FileNotFoundException e) {
        throw new IllegalStateException("File " + file.getName() + " not found", e);
    } catch (IOException e) {
        throw new IllegalStateException("Caught exception while reading from file", e);
    } finally {
        IOUtils.closeQuietly(din);
    }
    return digestToReturn;
}

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From source file:rapture.plugin.install.PluginContentReader.java

public static byte[] readFromFile(File file, MessageDigest md) throws IOException {
    DigestInputStream is;/*from  w  w w .  j  ava2s  .co m*/

    try {
        is = new DigestInputStream(new FileInputStream(file), md);
    } catch (FileNotFoundException e) {
        String path = file.getPath();
        if (path.endsWith(".bits")) {
            File f = new File(path.substring(0, path.length() - 5));
            is = new DigestInputStream(new FileInputStream(f), md);
        } else {
            throw e;
        }
    }

    return readFromStream(is);
}

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From source file:Main.java

public static String md5(InputStream in) {
    int bufferSize = 256 * 1024;
    DigestInputStream digestInputStream = null;
    try {//from w ww. ja v a2s .  c  o m
        MessageDigest messageDigest = MessageDigest.getInstance("MD5");
        digestInputStream = new DigestInputStream(in, messageDigest);
        byte[] buffer = new byte[bufferSize];
        while (digestInputStream.read(buffer) > 0)
            ;
        messageDigest = digestInputStream.getMessageDigest();
        byte[] resultByteArray = messageDigest.digest();
        char[] hexDigits = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
        char[] resultCharArray = new char[resultByteArray.length * 2];
        int index = 0;
        for (byte b : resultByteArray) {
            resultCharArray[index++] = hexDigits[b >>> 4 & 0xf];
            resultCharArray[index++] = hexDigits[b & 0xf];
        }
        return new String(resultCharArray);
    } catch (NoSuchAlgorithmException e) {
        return null;
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        try {
            if (digestInputStream != null)
                digestInputStream.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    return null;
}

---

From source file:hadoopInstaller.io.MD5Calculator.java

/**
 * /*from w  ww .j  av  a  2 s . c o  m*/
 * @param file
 *            the file object to calculate md5 for. (single file, not
 *            folder)
 * @return a string with the calculated md5 in lowercase.
 * @throws NoSuchAlgorithmException
 * @throws {@link
 *             FileSystemException}
 * @throws IOException
 */
public static String calculateFor(FileObject file) throws NoSuchAlgorithmException, IOException {
    try (InputStream is = file.getContent().getInputStream();
            DigestInputStream dis = new DigestInputStream(is, MessageDigest.getInstance("MD5"));) { //$NON-NLS-1$
        byte[] in = new byte[1024];
        while ((dis.read(in)) > 0) {
            // Read until there's nothing left.
        }
        return javax.xml.bind.DatatypeConverter.printHexBinary(dis.getMessageDigest().digest()).toLowerCase();
    }
}

---

From source file:Main.java

public static String encode(InputStream in) {
    int bufferSize = 256 * 1024;
    DigestInputStream digestInputStream = null;
    try {//  w  ww .j a va  2 s.com
        MessageDigest messageDigest = MessageDigest.getInstance("MD5");
        digestInputStream = new DigestInputStream(in, messageDigest);
        byte[] buffer = new byte[bufferSize];
        while (digestInputStream.read(buffer) > 0)
            ;
        messageDigest = digestInputStream.getMessageDigest();
        byte[] resultByteArray = messageDigest.digest();
        char[] hexDigits = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
        char[] resultCharArray = new char[resultByteArray.length * 2];
        int index = 0;
        for (byte b : resultByteArray) {
            resultCharArray[index++] = hexDigits[b >>> 4 & 0xf];
            resultCharArray[index++] = hexDigits[b & 0xf];
        }
        return new String(resultCharArray);
    } catch (NoSuchAlgorithmException e) {
        return null;
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        try {
            if (digestInputStream != null)
                digestInputStream.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    return null;
}

---

From source file:acmi.l2.clientmod.l2_version_switcher.Util.java

public static boolean hashEquals(File file, String hashString) throws IOException {
    try {/*from  w  ww .j  av  a2 s  . co m*/
        MessageDigest md = MessageDigest.getInstance("sha-1");
        try (FileInputStream hashBytes = new FileInputStream(file)) {
            DigestInputStream dis = new DigestInputStream(hashBytes, md);
            IOUtils.copy(dis, NullOutputStream.NULL_OUTPUT_STREAM);
        }
        byte[] hash = md.digest();
        return Arrays.equals(hash, parseHexBinary(hashString));
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException(e);
    }
}

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From source file:nl.knaw.dans.easy.sword2examples.ContinuedDeposit.java

public static URI depositPackage(File bagDir, IRI colIri, String uid, String pw, int chunkSize)
        throws Exception {
    // 0. Zip the bagDir
    File zipFile = new File(bagDir.getAbsolutePath() + ".zip");
    zipFile.delete();/*from  w  ww . j ava2  s .c  o  m*/
    Common.zipDirectory(bagDir, zipFile);

    // 1. Set up stream for calculating MD5
    FileInputStream fis = new FileInputStream(zipFile);
    MessageDigest md = MessageDigest.getInstance("MD5");
    DigestInputStream dis = new DigestInputStream(fis, md);

    // 2. Post first chunk bag to Col-IRI
    CloseableHttpClient http = Common.createHttpClient(colIri.toURI(), uid, pw);
    CloseableHttpResponse response = Common.sendChunk(dis, chunkSize, "POST", colIri.toURI(), "bag.zip.1",
            "application/octet-stream", http, chunkSize < zipFile.length());

    // 3. Check the response. If transfer corrupt (MD5 doesn't check out), report and exit.
    String bodyText = Common.readEntityAsString(response.getEntity());
    if (response.getStatusLine().getStatusCode() != 201) {
        System.err.println("FAILED. Status = " + response.getStatusLine());
        System.err.println("Response body follows:");
        System.err.println(bodyText);
        System.exit(2);
    }
    System.out.println("SUCCESS. Deposit receipt follows:");
    System.out.println(bodyText);

    Entry receipt = Common.parse(bodyText);
    Link seIriLink = receipt.getLink("edit");
    URI seIri = seIriLink.getHref().toURI();

    int remaining = (int) zipFile.length() - chunkSize;
    int count = 2;
    while (remaining > 0) {
        System.out.print(String.format("POST-ing chunk of %d bytes to SE-IRI (remaining: %d) ... ", chunkSize,
                remaining));
        response = Common.sendChunk(dis, chunkSize, "POST", seIri, "bag.zip." + count++,
                "application/octet-stream", http, remaining > chunkSize);
        remaining -= chunkSize;
        bodyText = Common.readEntityAsString(response.getEntity());
        if (response.getStatusLine().getStatusCode() != 200) {
            System.err.println("FAILED. Status = " + response.getStatusLine());
            System.err.println("Response body follows:");
            System.err.println(bodyText);
            System.exit(2);
        }
        System.out.println("SUCCESS.");
    }

    // 4. Get the statement URL. This is the URL from which to retrieve the current status of the deposit.
    System.out.println("Retrieving Statement IRI (Stat-IRI) from deposit receipt ...");
    receipt = Common.parse(bodyText);
    Link statIriLink = receipt.getLink("http://purl.org/net/sword/terms/statement");
    IRI statIri = statIriLink.getHref();
    System.out.println("Stat-IRI = " + statIri);

    // 5. Check statement every ten seconds (a bit too frantic, but okay for this test). If status changes:
    // report new status. If status is an error (INVALID, REJECTED, FAILED) or ARCHIVED: exit.
    return Common.trackDeposit(http, statIri.toURI());
}

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From source file:rapture.plugin.install.PluginContentReader.java

public static byte[] readFromStreamWithDigest(InputStream is, MessageDigest md) throws IOException {
    DigestInputStream dis = new DigestInputStream(is, md);

    return readFromStream(dis);

}

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From source file:org.fcrepo.kernel.impl.utils.FixityInputStream.java

/**
 * Creates a <code>FilterInputStream</code> by assigning the
 * argument <code>in</code> to the field <code>this.in</code>
 * so as to remember it for later use.//www.j  a va 2  s . c  o m
 *
 * @param in the underlying input stream, or <code>null</code> if
 *           this instance is to be created without an underlying stream.
 * @param digest the given digest
 */
public FixityInputStream(final InputStream in, final MessageDigest digest) {
    super(new DigestInputStream(in, digest));
}

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From source file:com.thoughtworks.go.agent.launcher.DownloadableFile.java

protected static boolean matchChecksum(File localFile, String expectedSignature) {
    try (FileInputStream input = new FileInputStream(localFile)) {
        MessageDigest digester = MessageDigest.getInstance("MD5");
        try (DigestInputStream digest = new DigestInputStream(input, digester)) {
            IOUtils.copy(digest, new NullOutputStream());
        }/*from  w w w .  j av  a2s  .  c  o  m*/
        return expectedSignature.equalsIgnoreCase(encodeHexString(digester.digest()));
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

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