Example usage for java.security MessageDigest reset

Introduction

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

Prototype

public void reset() 

Source Link

Document

Resets the digest for further use.

Usage

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.  jav  a2s.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:staging.plugin.StagingUtils.java

/**
 * @param stageFileStore/*from w w w  . j av a 2 s. co m*/
 * @return
 */
public static String fetchMD5Digest(IFileStore fileStore, IProgressMonitor monitor) throws CoreException {
    String result = null;
    IFileInfo info = null;
    monitor.beginTask("Retreiving staged file and calculating checksum", 100);
    info = fileStore.fetchInfo();
    if (info.getLength() == 0) {
        return "d41d8cd98f00b204e9800998ecf8427e";
    }
    MessageDigest messageDigest;
    try {
        messageDigest = MessageDigest.getInstance("MD5");
    } catch (NoSuchAlgorithmException e) {
        throw new CoreException(new Status(Status.ERROR, StagingPlugin.PLUGIN_ID,
                "Cannot create checksum without MD5 algorithm.", e));
    }
    messageDigest.reset();
    byte[] buffer = new byte[chunkSize];
    int bytesRead = 0;
    int totalBytesRead = 0;
    int progressTickBytes = (int) info.getLength() / 100;
    if (progressTickBytes == 0) {
        progressTickBytes = 1; // prevents divide by zero on files less
        // than 100 bytes
    }
    BufferedInputStream in = new BufferedInputStream(fileStore.openInputStream(EFS.NONE, null));
    try {
        while ((bytesRead = in.read(buffer, 0, chunkSize)) != -1) {
            messageDigest.update(buffer, 0, bytesRead);
            totalBytesRead = totalBytesRead + bytesRead;
            if ((totalBytesRead % progressTickBytes) < bytesRead) {
                monitor.worked(1);
            }
        }
    } catch (IOException e) {
        throw new CoreException(new Status(Status.ERROR, StagingPlugin.PLUGIN_ID,
                "Cannot read file store to calculate MD5 digest.", e));
    }
    Hex hex = new Hex();
    result = new String(hex.encode(messageDigest.digest()));
    monitor.done();
    return result;
}

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From source file:tvhchgen.Service.java

/**   
 * Calcula el md5 de una cadena de entrada
 * @param in : la cadena para calcular el md5
 * @return el md5 de la cadena pasada como parmetro
 *///  w w  w.j  ava2s . c  om
private static String md5ToStr(String in) throws Exception {
    MessageDigest md = MessageDigest.getInstance("MD5");
    md.reset();
    md.update(in.getBytes());
    byte[] md5bytes = md.digest();
    StringBuilder result = new StringBuilder();
    for (int index = 0; index < md5bytes.length; index++) {
        result.append(String.format("%02x", 0xFF & md5bytes[index]));
    }
    return result.toString();
}

---

From source file:org.tdod.ether.util.GameUtil.java

/**
 * Used to encrypt a String./*from  w  w  w.  j a v a2  s .  co  m*/
 * @param x The String to compute the hash with.
 * @return a hash stored as an array of bytes.
 */
public static byte[] computeHash(String x) {
    if (x == null) {
        return null;
    }
    try {
        java.security.MessageDigest d = null;
        d = java.security.MessageDigest.getInstance("SHA-1");
        d.reset();
        d.update(x.getBytes());
        return d.digest();
    } catch (Exception e) {
        _log.fatal(e);
    }

    return null;
}

---

From source file:staging.plugin.StagingUtils.java

/**
 * @param sourceFileStore//from  www .  ja  va 2 s .c  o m
 * @param sourceFileInfo
 * @param checksumMonitor
 * @return
 * @throws CoreException
 */
private static String checksumWithMD5Digest(IFileStore source, IFileInfo sourceInfo, IProgressMonitor monitor)
        throws CoreException {
    // TODO honor cancellation requests during copy
    // TODO report progress
    log.info("source: {}", source);
    String result = null;
    byte[] buffer = new byte[chunkSize];
    int length = (int) sourceInfo.getLength();
    int progressTickBytes = length / 100;
    int bytesRead = 0;
    int totalBytesCopied = 0;
    InputStream in = null;
    try {
        MessageDigest messageDigest;
        try {
            messageDigest = MessageDigest.getInstance("MD5");
        } catch (NoSuchAlgorithmException e) {
            throw new CoreException(new Status(Status.ERROR, StagingPlugin.PLUGIN_ID,
                    "Cannot compare checksums without MD5 algorithm.", e));
        }
        messageDigest.reset();
        in = new BufferedInputStream(source.openInputStream(EFS.NONE, null), 1024 * 64);
        while ((bytesRead = in.read(buffer, 0, chunkSize)) != -1) {
            messageDigest.update(buffer, 0, bytesRead);
            totalBytesCopied = totalBytesCopied + bytesRead;
            if (totalBytesCopied > 0 && progressTickBytes > 0) {
                if ((totalBytesCopied % progressTickBytes) < bytesRead) {
                    monitor.worked(1);
                    // if (length > 0) {
                    // int percent = (int) (100.0 * ((float)
                    // totalBytesCopied / length));
                    // monitor.subTask(percent + "% (" + totalBytesCopied /
                    // 1024 + "/" + length / 1024 + "K)");
                    // }
                }
            }
        }
        Hex hex = new Hex();
        result = new String(hex.encode(messageDigest.digest()));
    } catch (IOException e) {
        throw new CoreException(new Status(Status.ERROR, StagingPlugin.PLUGIN_ID, e.getLocalizedMessage(), e));
    } finally {
        try {
            if (in != null) {
                in.close();
            }
        } catch (IOException e) {
            log.error("Trouble closing i/o resources", e);
        }
    }
    return result;
}

---

From source file:com.turn.ttorrent.common.Torrent.java

public static byte[] hash(byte[] data) throws NoSuchAlgorithmException {
    MessageDigest crypt;
    crypt = MessageDigest.getInstance("SHA-1");
    crypt.reset();
    crypt.update(data);//from www  . j a  v  a 2 s .  co  m
    return crypt.digest();
}

---

From source file:staging.plugin.StagingUtils.java

public static final String copyWithMD5Digest(IFileStore source, IFileStore destination, IFileInfo sourceInfo,
        IProgressMonitor monitor) throws CoreException {
    // TODO honor cancellation requests during copy
    // TODO report progress
    log.debug("source: {}", source);
    log.debug("destination: {}", destination);
    // monitor.subTask("Copying file " + source.getName() + "...");
    String result = null;/*from ww w .  j av  a 2 s.  c  o m*/
    byte[] buffer = new byte[chunkSize];
    int length = (int) sourceInfo.getLength();
    int progressTickBytes = length / 100;
    int bytesRead = 0;
    int totalBytesCopied = 0;
    InputStream in = null;
    OutputStream out = null;
    try {
        MessageDigest messageDigest;
        try {
            messageDigest = MessageDigest.getInstance("MD5");
        } catch (NoSuchAlgorithmException e) {
            throw new CoreException(new Status(Status.ERROR, StagingPlugin.PLUGIN_ID,
                    "Cannot compare checksums without MD5 algorithm.", e));
        }
        messageDigest.reset();
        in = new BufferedInputStream(source.openInputStream(EFS.NONE, null), 1024 * 64);
        destination.getParent().mkdir(EFS.NONE, null);
        out = new BufferedOutputStream(destination.openOutputStream(EFS.NONE, null), 1024 * 64);
        while ((bytesRead = in.read(buffer, 0, chunkSize)) != -1) {
            if (monitor.isCanceled()) {
                throw new CoreException(
                        new Status(IStatus.CANCEL, StagingPlugin.PLUGIN_ID, "Staging cancelled"));
            }
            out.write(buffer, 0, bytesRead);
            messageDigest.update(buffer, 0, bytesRead);
            totalBytesCopied = totalBytesCopied + bytesRead;
            if (totalBytesCopied > 0 && progressTickBytes > 0) {
                if ((totalBytesCopied % progressTickBytes) < bytesRead) {
                    monitor.worked(1);
                    // if (length > 0) {
                    // int percent = (int) (100.0 * ((float)
                    // totalBytesCopied / length));
                    // monitor.subTask(percent + "% (" + totalBytesCopied /
                    // 1024 + "/" + length / 1024 + "K)");
                    // }
                }
            }
        }
        Hex hex = new Hex();
        result = new String(hex.encode(messageDigest.digest()));
    } catch (IOException e) {
        throw new CoreException(new Status(Status.ERROR, StagingPlugin.PLUGIN_ID, e.getLocalizedMessage(), e));
    } finally {
        try {
            if (out != null) {
                out.flush();
                out.close();
            }
            if (in != null) {
                in.close();
            }
        } catch (IOException e) {
            log.error("Trouble closing i/o resources", e);
        }
    }
    return result;
}

---

From source file:org.apache.ws.security.message.token.UsernameToken.java

public static String doPasswordDigest(String nonce, String created, byte[] password) {
    String passwdDigest = null;/*ww  w  .  j av  a  2  s  .  c o m*/
    try {
        byte[] b1 = nonce != null ? Base64.decode(nonce) : new byte[0];
        byte[] b2 = created != null ? created.getBytes("UTF-8") : new byte[0];
        byte[] b3 = password;
        byte[] b4 = new byte[b1.length + b2.length + b3.length];
        int offset = 0;
        System.arraycopy(b1, 0, b4, offset, b1.length);
        offset += b1.length;

        System.arraycopy(b2, 0, b4, offset, b2.length);
        offset += b2.length;

        System.arraycopy(b3, 0, b4, offset, b3.length);

        MessageDigest sha = MessageDigest.getInstance("SHA-1");
        sha.reset();
        sha.update(b4);
        passwdDigest = Base64.encode(sha.digest());
    } catch (Exception e) {
        if (DO_DEBUG) {
            LOG.debug(e.getMessage(), e);
        }
    }
    return passwdDigest;
}

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From source file:org.jenkinsci.remoting.engine.HandlerLoopbackLoadStress.java

private static String secretFor(@Nonnull String clientName) {
    try {//from   w w w.ja  v  a  2 s  . c o  m
        MessageDigest digest = MessageDigest.getInstance("MD5");
        digest.reset();
        byte[] bytes = digest
                .digest((HandlerLoopbackLoadStress.class.getName() + clientName).getBytes(Charsets.UTF_8));
        StringBuilder result = new StringBuilder(Math.max(0, bytes.length * 3 - 1));
        for (int i = 0; i < bytes.length; i++) {
            if (i > 0) {
                result.append(':');
            }
            result.append(Character.forDigit((bytes[i] >> 4) & 0x0f, 16));
            result.append(Character.forDigit(bytes[i] & 0x0f, 16));
        }
        return result.toString();
    } catch (NoSuchAlgorithmException e) {
        throw new IllegalStateException("JLS mandates MD5 support");
    }
}

---

From source file:org.ejbca.core.protocol.cmp.CmpMessageHelper.java

public static byte[] protectPKIMessageWithPBE(PKIMessage msg, String keyId, String raSecret, String digestAlgId,
        String macAlgId, int iterationCount)
        throws NoSuchAlgorithmException, NoSuchProviderException, InvalidKeyException {
    if (LOG.isTraceEnabled()) {
        LOG.trace(">protectPKIMessageWithPBE()");
    }/*w  w  w .  java2  s .com*/
    // Create the PasswordBased protection of the message
    PKIHeaderBuilder head = getHeaderBuilder(msg.getHeader());
    byte[] keyIdBytes;
    try {
        keyIdBytes = keyId.getBytes("UTF-8");
    } catch (UnsupportedEncodingException e) {
        keyIdBytes = keyId.getBytes();
        LOG.info("UTF-8 not available, using platform default encoding for keyIdBytes.");
    }
    head.setSenderKID(new DEROctetString(keyIdBytes));
    // SHA1
    AlgorithmIdentifier owfAlg = new AlgorithmIdentifier(digestAlgId);
    // iterations, usually something like 1024
    ASN1Integer iteration = new ASN1Integer(iterationCount);
    // HMAC/SHA1
    AlgorithmIdentifier macAlg = new AlgorithmIdentifier(macAlgId);
    // We need some random bytes for the nonce
    byte[] saltbytes = createSenderNonce();
    DEROctetString derSalt = new DEROctetString(saltbytes);

    // Create the new protected return message
    //String objectId = "1.2.840.113533.7.66.13" = passwordBasedMac;
    String objectId = CMPObjectIdentifiers.passwordBasedMac.getId();
    PBMParameter pp = new PBMParameter(derSalt, owfAlg, iteration, macAlg);
    AlgorithmIdentifier pAlg = new AlgorithmIdentifier(new ASN1ObjectIdentifier(objectId), pp);
    head.setProtectionAlg(pAlg);

    // Calculate the protection bits
    byte[] rasecret = raSecret.getBytes();
    byte[] basekey = new byte[rasecret.length + saltbytes.length];
    System.arraycopy(rasecret, 0, basekey, 0, rasecret.length);
    System.arraycopy(saltbytes, 0, basekey, rasecret.length, saltbytes.length);
    // Construct the base key according to rfc4210, section 5.1.3.1
    MessageDigest dig = MessageDigest.getInstance(owfAlg.getAlgorithm().getId(), "BC");
    for (int i = 0; i < iterationCount; i++) {
        basekey = dig.digest(basekey);
        dig.reset();
    }

    PKIHeader pkiHeader = head.build();
    // Do the mac
    String macOid = macAlg.getAlgorithm().getId();
    byte[] protectedBytes = CmpMessageHelper.getProtectedBytes(pkiHeader, msg.getBody()); //ret.getProtectedBytes();
    Mac mac = Mac.getInstance(macOid, "BC");
    SecretKey key = new SecretKeySpec(basekey, macOid);
    mac.init(key);
    mac.reset();
    mac.update(protectedBytes, 0, protectedBytes.length);
    byte[] out = mac.doFinal();
    DERBitString bs = new DERBitString(out);

    if (LOG.isTraceEnabled()) {
        LOG.trace("<protectPKIMessageWithPBE()");
    }
    // Return response as byte array 
    return CmpMessageHelper
            .pkiMessageToByteArray(new PKIMessage(pkiHeader, msg.getBody(), bs, msg.getExtraCerts()));
}

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