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(long val)

Source Link

Document

Constructs a BigInteger with the specified value, which may not be zero.

Usage

From source file:com.redhat.lightblue.crud.validator.MinMaxCheckerTest.java

/**
 * Col1: For debugging purposes to know which test case had issues
 * Col2: A instantiation to test with. Should always represent 2.
 *//*  ww w  . j  a  v a2 s .  c om*/
@Parameters(name = "{index}: {0}")
public static Collection<Object[]> data() {
    return Arrays.asList(new Object[][] { { Integer.class, new Integer(2) },
            { Byte.class, new Byte(new Integer(2).byteValue()) },
            { Short.class, new Short(new Integer(2).shortValue()) }, { Long.class, new Long(2L) },
            { Float.class, new Float(2F) }, { Double.class, new Double(2D) },
            { BigInteger.class, new BigInteger("2") }, { BigDecimal.class, new BigDecimal(2) } });
}

From source file:CryptPassword.java

/**
 * @param username// www  .ja v a2 s .c om
 * @param realm
 * @param md5Password
 * @return is the Digest password valid with the given real
 */
public static boolean isMD5DigestValid(String username, String realm, String md5Password) {
    byte b[];
    try {
        b = MessageDigest.getInstance("MD5").digest((username + ":" + realm + ":" + md5Password).getBytes());
    } catch (NoSuchAlgorithmException e) {
        return false;
    }
    BigInteger bi = new BigInteger(b);
    String s = bi.toString(16);
    if (s.length() % 2 != 0) {
        s = "0" + s; // String s is the encrypted password
    }
    return s.equals(md5Password);
}

From source file:MainClass.java

public void run() {

    ByteBuffer sizeb = ByteBuffer.allocate(4);
    try {/*from  w  w w . j a v  a  2s  . c o  m*/
        while (sizeb.hasRemaining())
            in.read(sizeb);
        sizeb.flip();
        int howMany = sizeb.getInt();
        sizeb.clear();

        for (int i = 0; i < howMany; i++) {
            while (sizeb.hasRemaining())
                in.read(sizeb);
            sizeb.flip();
            int length = sizeb.getInt();
            sizeb.clear();

            ByteBuffer data = ByteBuffer.allocate(length);
            while (data.hasRemaining())
                in.read(data);

            BigInteger result = new BigInteger(data.array());
            System.out.println(result);
        }
    } catch (IOException ex) {
        System.err.println(ex);
    } finally {
        try {
            in.close();
        } catch (Exception ex) {
            // We tried
        }
    }
}

From source file:jp.co.ntts.vhut.util.MacConversionUtil.java

/**
 * ?????????.//  w w w  .  ja v  a2  s.co  m
 * @param macStart .
 * @param count ?
 * @return 
 */
public static byte[] getMacAddressWithOrderAsByte(String macStart, int count) {
    BigInteger biMacStart = new BigInteger(addrToByte(macStart));
    BigInteger biSub = BigInteger.valueOf(count);
    byte[] bMacTarget = biMacStart.add(biSub).toByteArray();
    byte[] result = new byte[6];
    int delta = 6 - bMacTarget.length;
    for (int i = 0; i < 6; i++) {
        if (i >= delta) {
            result[i] = bMacTarget[i - delta];
        } else {
            result[i] = (byte) 0;
        }
    }
    return result;
}

From source file:cherry.foundation.type.SecureBigIntegerTest.java

@Test
public void testRandomTest() {
    for (int i = 0; i < 100; i++) {
        BigInteger plain = new BigInteger(RandomUtils.nextBytes(1024));
        SecureBigInteger sec0 = plainValueOf(plain);
        SecureBigInteger sec1 = cryptoValueOf(sec0.crypto());
        assertThat(sec1.plain(), is(plain));
    }//from w  w  w  .ja  v a2s.c om
}

From source file:com.coroptis.coidi.core.services.impl.ConvertorServiceImpl.java

@Override
public BigInteger convertToBigIntegerFromString(String s) {
    return new BigInteger(convertToBytes(s));
}

From source file:com.forsrc.utils.MyRsaUtils.java

/**
 * Decrypt string./* ww w  .j a  v a2s .  c  o  m*/
 *
 * @param rsaKey    the rsa key
 * @param encrypted the encrypted
 * @return the string
 * @throws IOException the io exception
 */
public static String decrypt(RsaKey rsaKey, String encrypted) throws IOException {
    BigInteger encrypt = new BigInteger(new String(new Base64().decode(encrypted)));
    return bigInteger2String(decrypt(rsaKey, encrypt));
}

From source file:RSA.java

/** Decrypt the given ciphertext message. */
public synchronized String decrypt(String message) {
    return new String((new BigInteger(message)).modPow(d, n).toByteArray());
}

From source file:cl.niclabs.tscrypto.common.datatypes.BigIntegerBase64TypeAdapter.java

@Override
public BigInteger deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
        throws JsonParseException {
    return new BigInteger(Base64.decodeBase64(json.getAsString()));
}

From source file:cherry.foundation.type.SecureBigDecimalTest.java

@Test
public void testRandomTest() {
    for (int i = 0; i < 100; i++) {
        BigInteger bi = new BigInteger(RandomUtils.nextBytes(1024));
        int scale = random.nextInt();
        BigDecimal plain = new BigDecimal(bi, scale);
        SecureBigDecimal sec0 = plainValueOf(plain);
        SecureBigDecimal sec1 = cryptoValueOf(sec0.crypto());
        assertThat(sec1.plain(), is(plain));
    }//from   w w w  . j a v a 2  s .  c o m
}