Example usage for java.math BigInteger valueOf

Introduction

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

Prototype

private static BigInteger valueOf(int val[])

Source Link

Document

Returns a BigInteger with the given two's complement representation.

Usage

From source file:im.whistle.crypt.Crypt.java

/**
 * Generates a private/public key pair./*  ww w  . ja v a 2  s  . co  m*/
 * @param args Arguments, element at 0 is the key size
 * @param callback Callback
 */
public static void genkeys(JSONArray args, AsyncCallback<JSONArray> callback) {
    try {
        Log.i("whistle", "Generating key pair ...");
        PRNGProvider.init(); // Ensure OpenSSL fix
        KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
        int bits = args.getInt(0);
        int exp = args.getInt(1);
        keyPairGenerator.initialize(new RSAKeyGenParameterSpec(bits, BigInteger.valueOf(exp)));
        KeyPair keyPair = keyPairGenerator.genKeyPair();
        String priv = "-----BEGIN RSA PRIVATE KEY-----\n"
                + Base64.encodeToString(keyPair.getPrivate().getEncoded(), Base64.DEFAULT).trim()
                + "\n-----END RSA PRIVATE KEY-----";
        String pub = "-----BEGIN PUBLIC KEY-----\n"
                + Base64.encodeToString(keyPair.getPublic().getEncoded(), Base64.DEFAULT).trim()
                + "\n-----END PUBLIC KEY-----";
        JSONArray res = new JSONArray();
        res.put(priv);
        res.put(pub);
        callback.success(res);
    } catch (Exception ex) {
        Log.w("whistle", "Key pair generation failed: " + ex.getMessage());
        callback.error(ex);
    }
}

From source file:NumberInRange.java

public static boolean isInRange(Number number, BigInteger min, BigInteger max) {
    try {//from   w  ww.  j  a  va2  s  . c om
        BigInteger bigInteger = null;
        if (number instanceof Byte || number instanceof Short || number instanceof Integer
                || number instanceof Long) {
            bigInteger = BigInteger.valueOf(number.longValue());
        } else if (number instanceof Float || number instanceof Double) {
            bigInteger = new BigDecimal(number.doubleValue()).toBigInteger();
        } else if (number instanceof BigInteger) {
            bigInteger = (BigInteger) number;
        } else if (number instanceof BigDecimal) {
            bigInteger = ((BigDecimal) number).toBigInteger();
        } else {
            // not a standard number
            bigInteger = new BigDecimal(number.doubleValue()).toBigInteger();
        }
        return max.compareTo(bigInteger) >= 0 && min.compareTo(bigInteger) <= 0;
    } catch (NumberFormatException e) {
        return false;
    }
}

From source file:org.springframework.cloud.consul.bus.EventService.java

private void setLastIndex(Response<?> response) {
    Long consulIndex = response.getConsulIndex();
    if (consulIndex != null) {
        lastIndex.set(BigInteger.valueOf(consulIndex));
    }/*from w w w .  jav a2  s.  c o  m*/
}

From source file:cherry.foundation.crypto.SecureBigIntegerEncoderTest.java

@Test
public void testSecureBigInteger() throws Exception {
    SecureBigInteger.setEncoder(createSecureBigIntegerEncoder());
    for (int i = 0; i < 100; i++) {

        BigInteger plain = BigInteger.valueOf(random.nextInt());
        SecureBigInteger ss0 = SecureBigInteger.plainValueOf(plain);
        assertThat(ss0.plain(), is(plain));
        assertThat(ss0.crypto(), is(not(plain.toString())));

        SecureBigInteger ss1 = SecureBigInteger.cryptoValueOf(ss0.crypto());
        assertThat(ss1.plain(), is(plain));
        assertThat(ss1.crypto(), is(ss0.crypto()));

        SecureBigInteger ss2 = SecureBigInteger.plainValueOf(ss1.plain());
        assertThat(ss2.plain(), is(plain));
        assertThat(ss2.crypto(), is(ss0.crypto()));

        SecureBigInteger ss3 = SecureBigInteger.cryptoValueOf(ss2.crypto());
        assertThat(ss3.plain(), is(plain));
        assertThat(ss3.crypto(), is(ss0.crypto()));
    }//from  w w  w  . j av a2  s.co m
}

From source file:com.github.tell.arithmetic.integer.gmp.MPZBenchmarking.java

@SuppressWarnings("UnusedAssignment")
private static StopWatch mulWithBigInteger(final int length) {
    final BigInteger x1 = new BigInteger(length, secureRandom);
    final BigInteger x2 = new BigInteger(length, secureRandom);

    @SuppressWarnings("unused")
    BigInteger x3 = BigInteger.valueOf(0);
    final StopWatch timer = new StopWatch();
    timer.start();//from  w w  w.ja  v a  2 s . com
    for (int j = 0; j < numOfLoop; j++) {
        x3 = x1.multiply(x2);
    }
    timer.stop();

    printout(timer, length, "BigInteger");

    return timer;
}

From source file:DiffieHellman.java

/**
 * Generates a random private Key (element 0) and a random public key (element 1) 
 * from the given {@code modulus}./*from  w w  w.  j av  a 2s .co  m*/
 * 
 * @param modulus
 * @return BigInteger array.  Element 0 is privateKey.  Element 1 is publicKey.
 */
public BigInteger[] generateRandomKeys(BigInteger modulus) {
    BigInteger privateKey = BigInteger.valueOf(System.currentTimeMillis() + __loadTime);
    return new BigInteger[] { privateKey, generatePublicKey(privateKey, modulus) };
}

From source file:Bytes.java

public static String friendly(long bytes) {
    return friendly(Bytes.B, BigInteger.valueOf(bytes));
}

From source file:fr.xebia.demo.objectgrid.ticketing.Seat.java

public Seat(int id, int number, boolean booked, int price) {
    super();/*  w w  w.j a va2  s . c o  m*/
    this.id = id;
    this.number = number;
    this.booked = booked;
    this.price = BigInteger.valueOf(price);
}

From source file:be.fedict.trust.service.util.ClockDriftUtil.java

public static Date executeTSP(ClockDriftConfigEntity clockDriftConfig, NetworkConfig networkConfig)
        throws IOException, TSPException {

    LOG.debug("clock drift detection: " + clockDriftConfig.toString());

    TimeStampRequestGenerator requestGen = new TimeStampRequestGenerator();

    TimeStampRequest request = requestGen.generate(TSPAlgorithms.SHA1, new byte[20], BigInteger.valueOf(100));
    byte[] requestData = request.getEncoded();

    HttpClient httpClient = new HttpClient();

    if (null != networkConfig) {
        httpClient.getHostConfiguration().setProxy(networkConfig.getProxyHost(), networkConfig.getProxyPort());
    }/*w  ww.  j a v a 2  s  .  c o m*/

    PostMethod postMethod = new PostMethod(clockDriftConfig.getServer());
    postMethod.setRequestEntity(new ByteArrayRequestEntity(requestData, "application/timestamp-query"));

    int statusCode = httpClient.executeMethod(postMethod);
    if (statusCode != HttpStatus.SC_OK) {
        throw new TSPException("Error contacting TSP server " + clockDriftConfig.getServer());
    }

    TimeStampResponse tspResponse = new TimeStampResponse(postMethod.getResponseBodyAsStream());
    postMethod.releaseConnection();

    return tspResponse.getTimeStampToken().getTimeStampInfo().getGenTime();
}

From source file:com.javector.soaj.provider.generatedwsdl.TestProviderGeneratedWsdl.java

public void testProvider() throws Exception {
    SoajProviderService service = new SoajProviderService();
    SoajProviderPortType port = service.getSoajProviderPort();
    Item item = new Item();
    item.setPrice(3.99);/*from   w  w w  . ja v a 2 s.  c  o m*/
    item.setProductName("Diet Coke");
    item.setQuantity(BigInteger.valueOf(6));
    Items items = new Items();
    items.getItem().add(item);
    BillToType billTo = new BillToType();
    billTo.setCity("Canton");
    billTo.setPhone("(973) 243-8776");
    billTo.setState("OH");
    billTo.setStreet("125 Main Street");
    billTo.setZip("98134");
    PurchaseOrder po = new PurchaseOrder();
    po.setBillTo(billTo);
    po.setItems(items);
    BillToType response;
    try {
        response = port.getBillTo(po);
    } catch (SOAPFaultException sfe) {
        SOAPFault sf = sfe.getFault();
        System.out.println("SOAPFault:" + IOUtil.NL + XmlUtil.toFormattedString(sf));
        sf.getDetail();
        throw sfe;
    }
    assertNotNull("SOAP Response should not be null.", response);
    System.out.println("bill to city = " + response.getCity());
    assertEquals("Canton", response.getCity());
}