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:org.confab.Utilities.java

public static String md5(String pass) {
    String md5 = "";
    try {/*from   w w w .  j a va 2 s.c  om*/
        MessageDigest m = MessageDigest.getInstance("MD5");
        byte[] data = pass.getBytes();
        m.update(data, 0, data.length);
        BigInteger i = new BigInteger(1, m.digest());
        md5 = String.format("%1$032x", i);
    } catch (NoSuchAlgorithmException e) {
        System.out.println(e);
    }
    return md5;
}

From source file:Gestores.GestorHash.java

public String md5(String plaintext) {
    String hashtext = "";
    try {/*from w ww.  java2 s . c  o  m*/
        MessageDigest m = MessageDigest.getInstance("MD5");
        m.reset();
        m.update(plaintext.getBytes());
        byte[] digest = m.digest();
        BigInteger bigInt = new BigInteger(1, digest);
        hashtext = bigInt.toString(16);
        // Now we need to zero pad it if you actually want the full 32 chars.
        while (hashtext.length() < 32) {
            hashtext = "0" + hashtext;
        }
    } catch (NoSuchAlgorithmException ex) {
        Logger.getLogger(GestorHash.class.getName()).log(Level.SEVERE, null, ex);
    }
    return hashtext;
}

From source file:org.jongo.mocks.UserMock.java

public static UserMock getRandomInstance() {
    final UserMock instance = new UserMock();
    instance.name = new BigInteger(100, random).toString(32);
    instance.age = 1 + (int) (Math.random() * ((100 - 1) + 1));
    instance.birthday = dateFTR.parseDateTime(getRandomBirthDate());
    instance.lastupdate = new DateTime();
    instance.credit = new BigDecimal(random.nextDouble());
    return instance;
}

From source file:support.AuthManager.java

public static String md5Custom(String st) {
    MessageDigest messageDigest = null;
    byte[] digest = new byte[0];

    try {// w w  w. jav a  2s. c o m
        messageDigest = MessageDigest.getInstance("MD5");
        messageDigest.reset();
        messageDigest.update(st.getBytes(StandardCharsets.UTF_8));
        digest = messageDigest.digest();
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }

    BigInteger bigInt = new BigInteger(1, digest);
    String md5Hex = bigInt.toString(16);

    while (md5Hex.length() < 32) {
        md5Hex = "0" + md5Hex;
    }

    return md5Hex;
}

From source file:com.examples.with.different.packagename.ClassNumberUtils.java

public static BigInteger createBigInteger(final String str) {
    if (str == null) {
        return null;
    }/*  ww  w.  ja  v  a 2s.c o m*/
    int pos = 0; // offset within string
    int radix = 10;
    boolean negate = false; // need to negate later?
    if (str.startsWith("-")) {
        negate = true;
        pos = 1;
    }
    if (str.startsWith("0x", pos) || str.startsWith("0X", pos)) { // hex
        radix = 16;
        pos += 2;
    } else if (str.startsWith("#", pos)) { // alternative hex (allowed by Long/Integer)
        radix = 16;
        pos++;
    } else if (str.startsWith("0", pos) && str.length() > pos + 1) { // octal; so long as there are additional digits
        radix = 8;
        pos++;
    } // default is to treat as decimal

    final BigInteger value = new BigInteger(str.substring(pos), radix);
    return negate ? value.negate() : value;
}

From source file:com.collaide.fileuploader.helper.TestHelper.java

protected static String getRandomString() {
    return new BigInteger(130, new SecureRandom()).toString(32);
}

From source file:Main.java

public static String createSirfCommandFromPayload(String payload) {
    int length = payload.length() / 2;
    String res;/*w  w  w .  j a  va 2 s .  co m*/

    byte[] command = new BigInteger(payload, 16).toByteArray();

    int checkSum = 0;
    for (byte b : command) {
        checkSum += (b & 0xff);
    }
    checkSum &= 0x7FFF;

    res = String.format((Locale) null, "%s%04X%s%04X%s", start, length, payload, checkSum, end);
    return res;
}

From source file:com.gwtcx.server.util.Security.java

public static String md5(final String text) {
    String hashword = null;//from   ww w. j  av  a  2 s  .  co  m

    try {
        final MessageDigest md5 = MessageDigest.getInstance("MD5");
        md5.update(text.getBytes());
        final BigInteger hash = new BigInteger(1, md5.digest());
        hashword = hash.toString(16);
    } catch (final NoSuchAlgorithmException nsae) {
    }

    while (hashword.length() < 32) {
        hashword = "0" + hashword;
    }

    return hashword;
}

From source file:org.rivetlogic.utils.IntegrationUtils.java

public static String MD5(String str) throws NoSuchAlgorithmException {
    MessageDigest digest = MessageDigest.getInstance("MD5");

    byte[] dg = digest.digest(str.getBytes());

    BigInteger number = new BigInteger(1, dg);

    return number.toString(16);
}

From source file:eml.studio.shared.util.Aes.java

/** 
 * Convert byte[] to a variety of hexadecimal strings
 *  //from   w  ww . j ava  2 s .  co  m
 * @param bytes byte[] 
 * @param radix Convertible rangefrom Character.MIN_RADIX to Character.MAX_RADIX out of range is changed to decimal
 * @return converted string 
 */
public static String binary(byte[] bytes, int radix) {
    return new BigInteger(1, bytes).toString(radix);
}