Example usage for javax.crypto KeyGenerator getInstance

Introduction

In this page you can find the example usage for javax.crypto KeyGenerator getInstance.

Prototype

public static final KeyGenerator getInstance(String algorithm) throws NoSuchAlgorithmException 

Source Link

Document

Returns a KeyGenerator object that generates secret keys for the specified algorithm.

Usage

From source file:org.oscarehr.common.hl7.v2.oscar_to_oscar.SendingUtils.java

private static SecretKey createSecretKey() throws NoSuchAlgorithmException {
    KeyGenerator keyGenerator = KeyGenerator.getInstance("AES");
    keyGenerator.init(128);//from w w  w  . ja  v  a  2  s . c  o  m
    return (keyGenerator.generateKey());
}

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From source file:org.apache.hadoop.mapreduce.JobSubmitter.java

/**
 * Internal method for submitting jobs to the system.
 * /*  w  ww.  j a v  a  2s .c  o m*/
 * <p>The job submission process involves:
 * <ol>
 *   <li>
 *   Checking the input and output specifications of the job.
 *   </li>
 *   <li>
 *   Computing the {@link InputSplit}s for the job.
 *   </li>
 *   <li>
 *   Setup the requisite accounting information for the 
 *   {@link DistributedCache} of the job, if necessary.
 *   </li>
 *   <li>
 *   Copying the job's jar and configuration to the map-reduce system
 *   directory on the distributed file-system. 
 *   </li>
 *   <li>
 *   Submitting the job to the <code>JobTracker</code> and optionally
 *   monitoring it's status.
 *   </li>
 * </ol></p>
 * @param job the configuration to submit
 * @param cluster the handle to the Cluster
 * @throws ClassNotFoundException
 * @throws InterruptedException
 * @throws IOException
 */
JobStatus submitJobInternal(Job job, Cluster cluster)
        throws ClassNotFoundException, InterruptedException, IOException {

    //validate the jobs output specs 
    checkSpecs(job);

    Configuration conf = job.getConfiguration();
    addMRFrameworkToDistributedCache(conf);

    Path jobStagingArea = JobSubmissionFiles.getStagingDir(cluster, conf);
    //configure the command line options correctly on the submitting dfs
    InetAddress ip = InetAddress.getLocalHost();
    if (ip != null) {
        submitHostAddress = ip.getHostAddress();
        submitHostName = ip.getHostName();
        conf.set(MRJobConfig.JOB_SUBMITHOST, submitHostName);
        conf.set(MRJobConfig.JOB_SUBMITHOSTADDR, submitHostAddress);
    }
    JobID jobId = submitClient.getNewJobID();
    job.setJobID(jobId);
    Path submitJobDir = new Path(jobStagingArea, jobId.toString());
    JobStatus status = null;
    try {
        conf.set(MRJobConfig.USER_NAME, UserGroupInformation.getCurrentUser().getShortUserName());
        conf.set("hadoop.http.filter.initializers",
                "org.apache.hadoop.yarn.server.webproxy.amfilter.AmFilterInitializer");
        conf.set(MRJobConfig.MAPREDUCE_JOB_DIR, submitJobDir.toString());
        LOG.debug("Configuring job " + jobId + " with " + submitJobDir + " as the submit dir");
        // get delegation token for the dir
        TokenCache.obtainTokensForNamenodes(job.getCredentials(), new Path[] { submitJobDir }, conf);

        populateTokenCache(conf, job.getCredentials());

        // generate a secret to authenticate shuffle transfers
        if (TokenCache.getShuffleSecretKey(job.getCredentials()) == null) {
            KeyGenerator keyGen;
            try {
                keyGen = KeyGenerator.getInstance(SHUFFLE_KEYGEN_ALGORITHM);
                keyGen.init(SHUFFLE_KEY_LENGTH);
            } catch (NoSuchAlgorithmException e) {
                throw new IOException("Error generating shuffle secret key", e);
            }
            SecretKey shuffleKey = keyGen.generateKey();
            TokenCache.setShuffleSecretKey(shuffleKey.getEncoded(), job.getCredentials());
        }
        if (CryptoUtils.isEncryptedSpillEnabled(conf)) {
            conf.setInt(MRJobConfig.MR_AM_MAX_ATTEMPTS, 1);
            LOG.warn("Max job attempts set to 1 since encrypted intermediate" + "data spill is enabled");
        }

        copyAndConfigureFiles(job, submitJobDir);

        Path submitJobFile = JobSubmissionFiles.getJobConfPath(submitJobDir);

        // Create the splits for the job
        LOG.debug("Creating splits at " + jtFs.makeQualified(submitJobDir));
        int maps = writeSplits(job, submitJobDir);
        conf.setInt(MRJobConfig.NUM_MAPS, maps);
        LOG.info("number of splits:" + maps);

        // write "queue admins of the queue to which job is being submitted"
        // to job file.
        String queue = conf.get(MRJobConfig.QUEUE_NAME, JobConf.DEFAULT_QUEUE_NAME);
        AccessControlList acl = submitClient.getQueueAdmins(queue);
        conf.set(toFullPropertyName(queue, QueueACL.ADMINISTER_JOBS.getAclName()), acl.getAclString());

        // removing jobtoken referrals before copying the jobconf to HDFS
        // as the tasks don't need this setting, actually they may break
        // because of it if present as the referral will point to a
        // different job.
        TokenCache.cleanUpTokenReferral(conf);

        if (conf.getBoolean(MRJobConfig.JOB_TOKEN_TRACKING_IDS_ENABLED,
                MRJobConfig.DEFAULT_JOB_TOKEN_TRACKING_IDS_ENABLED)) {
            // Add HDFS tracking ids
            ArrayList<String> trackingIds = new ArrayList<String>();
            for (Token<? extends TokenIdentifier> t : job.getCredentials().getAllTokens()) {
                trackingIds.add(t.decodeIdentifier().getTrackingId());
            }
            conf.setStrings(MRJobConfig.JOB_TOKEN_TRACKING_IDS,
                    trackingIds.toArray(new String[trackingIds.size()]));
        }

        // Set reservation info if it exists
        ReservationId reservationId = job.getReservationId();
        if (reservationId != null) {
            conf.set(MRJobConfig.RESERVATION_ID, reservationId.toString());
        }

        // Write job file to submit dir
        writeConf(conf, submitJobFile);

        //
        // Now, actually submit the job (using the submit name)
        //
        printTokens(jobId, job.getCredentials());
        status = submitClient.submitJob(jobId, submitJobDir.toString(), job.getCredentials());
        if (status != null) {
            return status;
        } else {
            throw new IOException("Could not launch job");
        }
    } finally {
        if (status == null) {
            LOG.info("Cleaning up the staging area " + submitJobDir);
            if (jtFs != null && submitJobDir != null)
                jtFs.delete(submitJobDir, true);

        }
    }
}

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From source file:org.apache.abdera.ext.oauth.OAuthScheme.java

private String sign(String method, String baseString, Certificate cert) throws AuthenticationException {
    if (method.equalsIgnoreCase("HMAC-MD5") || method.equalsIgnoreCase("HMAC-SHA1")) {
        try {//  w w  w .j  a va2s.co m
            String[] tokens = method.split("-");
            String methodName = tokens[0].substring(0, 1).toUpperCase() + tokens[0].substring(1).toLowerCase()
                    + tokens[1];
            KeyGenerator kg = KeyGenerator.getInstance(methodName);

            Mac mac = Mac.getInstance(kg.getAlgorithm());
            mac.init(kg.generateKey());
            byte[] result = mac.doFinal(baseString.getBytes());

            return new String(Base64.encodeBase64(result));
        } catch (Exception e) {
            throw new AuthenticationException(e.getMessage(), e);
        }
    } else if (method.equalsIgnoreCase("md5")) {
        return new String(Base64.encodeBase64(DigestUtils.md5(baseString)));
    } else if (method.equalsIgnoreCase("sha1")) {
        return new String(Base64.encodeBase64(DigestUtils.sha(baseString)));
    } else if (method.equalsIgnoreCase("RSA-SHA1")) {
        if (cert == null) {
            throw new AuthenticationException("a cert is mandatory to use SHA1 with RSA");
        }
        try {
            Cipher cipher = Cipher.getInstance("SHA1withRSA");
            cipher.init(Cipher.ENCRYPT_MODE, cert);
            byte[] result = cipher.doFinal(baseString.getBytes());
            return new String(Base64.encodeBase64(result));
        } catch (Exception e) {
            throw new AuthenticationException(e.getMessage(), e);
        }
    } else {
        throw new AuthenticationException("unsupported algorithm method: " + method);
    }
}

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From source file:org.opensaml.xml.security.XMLSecurityHelper.java

/**
 * Generates a random Java JCE symmetric Key object from the specified XML Encryption algorithm URI.
 * /*from w  w w .  ja  v  a2  s . c  o m*/
 * @param algoURI The XML Encryption algorithm URI
 * @return a randomly-generated symmetric Key
 * @throws NoSuchAlgorithmException thrown if the specified algorithm is invalid
 * @throws KeyException thrown if the length of the key to generate could not be determined
 */
public static SecretKey generateSymmetricKey(String algoURI) throws NoSuchAlgorithmException, KeyException {
    Logger log = getLogger();
    String jceAlgorithmName = getKeyAlgorithmFromURI(algoURI);
    if (StringSupport.isNullOrEmpty(jceAlgorithmName)) {
        log.error("Mapping from algorithm URI '" + algoURI
                + "' to key algorithm not available, key generation failed");
        throw new NoSuchAlgorithmException("Algorithm URI'" + algoURI + "' is invalid for key generation");
    }
    Integer keyLength = getKeyLengthFromURI(algoURI);
    if (keyLength == null) {
        log.error("Key length could not be determined from algorithm URI, can't generate key");
        throw new KeyException("Key length not determinable from algorithm URI, could not generate new key");
    }
    KeyGenerator keyGenerator = KeyGenerator.getInstance(jceAlgorithmName);
    keyGenerator.init(keyLength);
    return keyGenerator.generateKey();
}

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From source file:org.kuali.rice.kew.documentoperation.web.DocumentContentOperationAction.java

private SecretKey getSecretKey(String encryptionKey) throws Exception {
    KeyGenerator keygen = KeyGenerator.getInstance("DES");
    SecretKey desKey = keygen.generateKey();

    // Create the cipher
    Cipher cipher = Cipher.getInstance(ALGORITHM);
    cipher.init((Cipher.UNWRAP_MODE), desKey);

    byte[] bytes = Base64.decodeBase64(encryptionKey.getBytes());

    SecretKeyFactory desFactory = SecretKeyFactory.getInstance("DES");

    DESKeySpec keyspec = new DESKeySpec(bytes);
    desKey = desFactory.generateSecret(keyspec);
    // Create the cipher
    cipher.init((Cipher.WRAP_MODE), desKey);
    return desKey;
}

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From source file:org.wso2.carbon.apimgt.core.impl.FileEncryptionUtility.java

/**
 * Creates and stores an AES key/*from  w w  w.  ja  v  a2  s  .com*/
 *
 * @throws APIManagementException if an error occurs while creating or storing AES key
 */
void createAndStoreAESKey() throws APIManagementException {
    try {
        //create a new AES key
        KeyGenerator keyGenerator = KeyGenerator.getInstance(EncryptionConstants.AES);
        keyGenerator.init(AES_Key_Size);
        byte[] aesKey = keyGenerator.generateKey().getEncoded();

        //store key => encrypt -> encode -> chars -> string
        byte[] encryptedKeyBytes = SecureVaultUtils.base64Encode(getSecureVault().encrypt(aesKey));
        String encryptedKeyString = new String(SecureVaultUtils.toChars(encryptedKeyBytes));

        Files.deleteIfExists(Paths.get(getAesKeyFileLocation()));
        APIFileUtils.createFile(getAesKeyFileLocation());
        APIFileUtils.writeToFile(getAesKeyFileLocation(), encryptedKeyString);
        log.debug("AES key successfully created and stored");
    } catch (NoSuchAlgorithmException | SecureVaultException | APIMgtDAOException | IOException e) {
        String msg = "Error while creating or storing created AES key";
        throw new APIManagementException(msg, e);
    }
}

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From source file:jef.tools.security.EncrypterUtil.java

/**
 * ?KEY//from   w  w  w  . j a  va  2s . com
 * 
 * @param value
 * @param algom
 *            
 * @return
 */
public static final SecretKey generateKey(String algom, int keylength) {
    try {
        KeyGenerator keygen = KeyGenerator.getInstance(algom);
        keygen.init(keylength);
        SecretKey deskey = keygen.generateKey();
        return deskey;
    } catch (GeneralSecurityException e) {
        throw new RuntimeException(e);
    }
}

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From source file:net.sourceforge.jencrypt.lib.CryptoWrapper.java

private Key getInitializationVector(CryptoWrapperBuilder builder) throws NoSuchAlgorithmException {

    KeyGenerator generator = KeyGenerator.getInstance(builder.cipherName);
    generator.init(CryptoWrapper.AES_BLOCK_SIZE_IN_BITS, new SecureRandom());
    return generator.generateKey();
}

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From source file:org.jpos.qi.eeuser.ConsumersView.java

private SecretKey generateKey() throws NoSuchAlgorithmException {
    KeyGenerator gen = KeyGenerator.getInstance(HASH_ALGORITHM);
    return gen.generateKey();
}

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From source file:net.jmhertlein.core.crypto.Keys.java

/**
 * Generates a new AES key using the system's default SecureRandom
 *
 * @param bits/*from www.j  a  v  a2s .c  o  m*/
 *
 * @return the AES key, or null if the AES algorithm is not available on the system
 */
public static SecretKey newAESKey(int bits) {
    KeyGenerator keyGen;

    try {
        keyGen = KeyGenerator.getInstance("AES");
    } catch (NoSuchAlgorithmException ex) {
        Logger.getLogger(Keys.class.getName()).log(Level.SEVERE, null, ex);
        return null;
    }

    keyGen.init(bits);

    return keyGen.generateKey();
}

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