Example usage for java.math BigInteger BigInteger

Introduction

In this page you can find the example usage for java.math BigInteger BigInteger.

Prototype

private BigInteger(byte[] magnitude, int signum) 

Source Link

Document

This private constructor is for internal use and assumes that its arguments are correct.

Usage

From source file:com.github.rnewson.couchdb.lucene.couchdb.View.java

public String getDigest() {
    try {/*from  w  w w .ja v a  2s.c  o  m*/
        final MessageDigest md = MessageDigest.getInstance("MD5");
        md.update(toBytes(json.optString("analyzer")));
        md.update(toBytes(json.optString("defaults")));
        md.update(toBytes(json.optString("index")));
        return new BigInteger(1, md.digest()).toString(Character.MAX_RADIX);
    } catch (final NoSuchAlgorithmException e) {
        throw new Error("MD5 support missing.");
    }
}

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From source file:goraci.Print.java

public int run(String[] args) throws Exception {
    Options options = new Options();
    options.addOption("s", "start", true, "start key");
    options.addOption("e", "end", true, "end key");
    options.addOption("l", "limit", true, "number to print");

    GnuParser parser = new GnuParser();
    CommandLine cmd = null;// ww w  . j av  a  2s.co  m
    try {
        cmd = parser.parse(options, args);
        if (cmd.getArgs().length != 0) {
            throw new ParseException("Command takes no arguments");
        }
    } catch (ParseException e) {
        System.err.println("Failed to parse command line " + e.getMessage());
        System.err.println();
        HelpFormatter formatter = new HelpFormatter();
        formatter.printHelp(getClass().getSimpleName(), options);
        System.exit(-1);
    }

    DataStore<Long, CINode> store = DataStoreFactory.getDataStore(Long.class, CINode.class,
            new Configuration());

    Query<Long, CINode> query = store.newQuery();

    if (cmd.hasOption("s"))
        query.setStartKey(new BigInteger(cmd.getOptionValue("s"), 16).longValue());

    if (cmd.hasOption("e"))
        query.setEndKey(new BigInteger(cmd.getOptionValue("e"), 16).longValue());

    if (cmd.hasOption("l"))
        query.setLimit(Integer.parseInt(cmd.getOptionValue("l")));
    else
        query.setLimit(100);

    Result<Long, CINode> rs = store.execute(query);

    while (rs.next()) {
        CINode node = rs.get();
        System.out.printf("%016x:%016x:%012d:%s\n", rs.getKey(), node.getPrev(), node.getCount(),
                node.getClient());

    }

    store.close();

    return 0;
}

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From source file:cz.alej.michalik.totp.server.Users.java

/**
 * Vygenerovat kl? pro generovn TOTP hesla
 * /* w w  w  .j  a v a 2 s.  c  om*/
 * @return base32 etzec
 */
public static String generateSecret() {
    // Chci kl? o velikosti 20 byt
    int maxBits = 20 * 8 - 1;
    SecureRandom rand = new SecureRandom();
    byte[] val = new BigInteger(maxBits, rand).toByteArray();
    return new Base32().encodeToString(val);
}

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From source file:io.github.benas.jpopulator.impl.DefaultRandomizer.java

/**
 * Generate a random value for the given type.
 *
 * @param type the type for which a random value will be generated
 * @return a random value for the given type or null if the type is not supported
 *//* w w  w .j a  v  a2 s .  co m*/
public static Object getRandomValue(final Class type) {

    /*
     * String and Character types
     */
    if (type.equals(String.class)) {
        return RandomStringUtils.randomAlphabetic(ConstantsUtil.DEFAULT_STRING_LENGTH);
    }
    if (type.equals(Character.TYPE) || type.equals(Character.class)) {
        return RandomStringUtils.randomAlphabetic(1).charAt(0);
    }

    /*
     * Boolean type
     */
    if (type.equals(Boolean.TYPE) || type.equals(Boolean.class)) {
        return ConstantsUtil.RANDOM.nextBoolean();
    }

    /*
     * Numeric types
     */
    if (type.equals(Byte.TYPE) || type.equals(Byte.class)) {
        return (byte) (ConstantsUtil.RANDOM.nextInt());
    }
    if (type.equals(Short.TYPE) || type.equals(Short.class)) {
        return (short) (ConstantsUtil.RANDOM.nextInt());
    }
    if (type.equals(Integer.TYPE) || type.equals(Integer.class)) {
        return ConstantsUtil.RANDOM.nextInt();
    }
    if (type.equals(Long.TYPE) || type.equals(Long.class)) {
        return ConstantsUtil.RANDOM.nextLong();
    }
    if (type.equals(Double.TYPE) || type.equals(Double.class)) {
        return ConstantsUtil.RANDOM.nextDouble();
    }
    if (type.equals(Float.TYPE) || type.equals(Float.class)) {
        return ConstantsUtil.RANDOM.nextFloat();
    }
    if (type.equals(BigInteger.class)) {
        return new BigInteger(
                Math.abs(ConstantsUtil.RANDOM.nextInt(ConstantsUtil.DEFAULT_BIG_INTEGER_NUM_BITS_LENGTH)),
                ConstantsUtil.RANDOM);
    }
    if (type.equals(BigDecimal.class)) {
        return new BigDecimal(ConstantsUtil.RANDOM.nextDouble());
    }
    if (type.equals(AtomicLong.class)) {
        return new AtomicLong(ConstantsUtil.RANDOM.nextLong());
    }
    if (type.equals(AtomicInteger.class)) {
        return new AtomicInteger(ConstantsUtil.RANDOM.nextInt());
    }

    /*
     * Date and time types
     */
    if (type.equals(java.util.Date.class)) {
        return ConstantsUtil.DATE_RANGE_RANDOMIZER.getRandomValue();
    }
    if (type.equals(java.sql.Date.class)) {
        return new java.sql.Date(ConstantsUtil.DATE_RANGE_RANDOMIZER.getRandomValue().getTime());
    }
    if (type.equals(java.sql.Time.class)) {
        return new java.sql.Time(ConstantsUtil.RANDOM.nextLong());
    }
    if (type.equals(java.sql.Timestamp.class)) {
        return new java.sql.Timestamp(ConstantsUtil.DATE_RANGE_RANDOMIZER.getRandomValue().getTime());
    }
    if (type.equals(Calendar.class)) {
        return Calendar.getInstance();
    }
    if (type.equals(org.joda.time.DateTime.class)) {
        return new org.joda.time.DateTime(ConstantsUtil.DATE_RANGE_RANDOMIZER.getRandomValue().getTime());
    }
    if (type.equals(org.joda.time.LocalDate.class)) {
        return new org.joda.time.LocalDate(ConstantsUtil.DATE_RANGE_RANDOMIZER.getRandomValue().getTime());
    }
    if (type.equals(org.joda.time.LocalTime.class)) {
        return new org.joda.time.LocalTime(ConstantsUtil.DATE_RANGE_RANDOMIZER.getRandomValue().getTime());
    }
    if (type.equals(org.joda.time.LocalDateTime.class)) {
        return new org.joda.time.LocalDateTime(ConstantsUtil.DATE_RANGE_RANDOMIZER.getRandomValue().getTime());
    }
    if (type.equals(org.joda.time.Duration.class)) {
        return new org.joda.time.Duration(Math.abs(ConstantsUtil.RANDOM.nextLong()));
    }
    if (type.equals(org.joda.time.Period.class)) {
        return new org.joda.time.Period(Math.abs(ConstantsUtil.RANDOM.nextInt()));
    }
    if (type.equals(org.joda.time.Interval.class)) {
        long startDate = Math.abs(ConstantsUtil.RANDOM.nextInt());
        long endDate = startDate + Math.abs(ConstantsUtil.RANDOM.nextInt());
        return new org.joda.time.Interval(startDate, endDate);
    }

    /*
     * Enum type
     */
    if (type.isEnum() && type.getEnumConstants().length > 0) {
        Object[] enumConstants = type.getEnumConstants();
        return enumConstants[ConstantsUtil.RANDOM.nextInt(enumConstants.length)];
    }

    /*
     * Return null for any unsupported type
     */
    return null;

}

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From source file:com.github.woki.payments.adyen.action.CSEUtil.java

public static Cipher rsaCipher(final String cseKeyText) throws NoSuchPaddingException, NoSuchAlgorithmException,
        InvalidKeyException, InvalidKeySpecException, IllegalArgumentException {
    String[] cseKeyParts = cseKeyText.split("\\|");
    if (cseKeyParts.length != 2) {
        throw new InvalidKeyException("Invalid CSE Key: " + cseKeyText);
    }//from  w w w. ja  va 2  s. c  o m
    KeyFactory keyFactory = KeyFactory.getInstance("RSA");

    BigInteger keyComponent1, keyComponent2;
    try {
        keyComponent1 = new BigInteger(cseKeyParts[1].toLowerCase(Locale.getDefault()), 16);
        keyComponent2 = new BigInteger(cseKeyParts[0].toLowerCase(Locale.getDefault()), 16);
    } catch (NumberFormatException e) {
        throw new InvalidKeyException("Invalid CSE Key: " + cseKeyText);
    }
    RSAPublicKeySpec pubKeySpec = new RSAPublicKeySpec(keyComponent1, keyComponent2);
    PublicKey pubKey = keyFactory.generatePublic(pubKeySpec);

    Cipher result = Cipher.getInstance("RSA/None/PKCS1Padding");
    result.init(Cipher.ENCRYPT_MODE, pubKey);
    return result;
}

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From source file:com.bigdata.dastor.dht.CollatingOrderPreservingPartitioner.java

/**
 * Convert a byte array containing the most significant of 'sigbytes' bytes
 * representing a big-endian magnitude into a BigInteger.
 *///from  w  w w  .  j  ava  2s. c o m
private BigInteger bigForBytes(byte[] bytes, int sigbytes) {
    if (bytes.length != sigbytes) {
        // append zeros
        bytes = Arrays.copyOf(bytes, sigbytes);
    }
    return new BigInteger(1, bytes);
}

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From source file:Controlador.ControladorUsuario.java

/**
 * Crea un codigo de recuperacion para el usuario, actualiza el usuario en
 * la BD con el codigo creado y la fecha de la creacion.
 *
 * @param u El usuario./*  w w  w .ja v  a2s  .com*/
 * @return El codigo creado.
 */
public String crearCodigoRecuperacion(Usuario u) {
    SecureRandom random = new SecureRandom();
    String codigo = new BigInteger(130, random).toString(32);
    u.setCodigo(codigo);
    Date d = new Date();
    u.setFechaCreacionCodigo(d);
    usuarioDAO.actualizar(u);
    return codigo;
}

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From source file:org.homiefund.api.service.impl.InviteServiceImpl.java

@Override
@Transactional//from w  ww.j ava2 s . co  m
public void sendInvite(HomeDTO home, String email) throws IllegalArgumentException {
    Home dao = homeDAO.getById(home.getId());
    if (dao != null) {
        Invitation invitation = new Invitation();
        invitation.setValid(true);
        invitation.setHome(dao);
        invitation.setHash(new BigInteger(130, secureRandom).toString(64));
        invitation.setEmail(email);

        log.info(invitation);
        invitationDAO.create(invitation);

        mailService.sendInvite(mapper.map(invitation, InvitationDTO.class), email);
    } else {
        //todo or throw exception ?
        log.warn("Trying to invite into nonexistent home");
    }
}

---

From source file:de.taimos.dvalin.interconnect.model.MessageCryptoUtil.java

/**
 *
 * @param msg the message to sign/*from w ww  .j a  va  2 s  . com*/
 * @return the signature hash
 * @throws CryptoException on sign error
 */
public static String sign(final String msg) throws CryptoException {
    try {
        final String toEnc = msg + MessageCryptoUtil.SIGNATURE;
        final MessageDigest mdEnc = MessageDigest.getInstance("MD5");
        mdEnc.update(toEnc.getBytes(Charset.forName("UTF-8")), 0, toEnc.length());
        return new BigInteger(1, mdEnc.digest()).toString(16);
    } catch (final Exception e) {
        throw new CryptoException("Creating signature failed", e);
    }
}

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From source file:br.vn.Controlador.ControladorClienteBean.java

public void setConfirma(String confirma) throws NoSuchAlgorithmException {
    MessageDigest md = MessageDigest.getInstance("MD5");

    BigInteger hash = new BigInteger(1, md.digest(confirma.getBytes()));
    this.confirma = String.format("%32x", hash);

}

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