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:Main.java

public static Integer bigIntStringToInt(String integer, int radix) {
    return new BigInteger(integer, radix).intValue();
}

From source file:Main.java

public static long hex2long(String s) {
    return new BigInteger(s, 16).longValue();
}

From source file:Main.java

public static String binary(byte[] bytes, int radix) {
    return new BigInteger(1, bytes).toString(radix);
}

From source file:Main.java

public static byte[] getRSAHackdData(byte[] dataWithHash) {
    BigInteger modulus = new BigInteger(
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
            16);/*from w  ww .  j av a 2  s . c  o  m*/
    BigInteger pubExp = new BigInteger("010001", 16);

    BigInteger r = new BigInteger(dataWithHash);

    BigInteger s = r.modPow(pubExp, modulus);
    byte[] temp = s.toByteArray();
    return Arrays.copyOfRange(temp, temp.length - 256, temp.length);
}

From source file:Main.java

static String bin2hex(byte[] data) {
    return String.format("%0" + (data.length * 2) + "X", new BigInteger(1, data));
}

From source file:Main.java

public static BigInteger hashFnv1A(byte[] data) {
    final BigInteger INIT64 = new BigInteger("cbf29ce484222325", 16);
    final BigInteger PRIME64 = new BigInteger("100000001b3", 16);
    final BigInteger MOD64 = new BigInteger("2").pow(64);

    BigInteger hash = INIT64;/*from   w ww  .  j a  v  a 2s .c  o  m*/

    for (byte b : data) {
        hash = hash.xor(BigInteger.valueOf((int) b & 0xff));
        hash = hash.multiply(PRIME64).mod(MOD64);
    }

    return hash;
}

From source file:Main.java

private static String toHex(byte[] bytes) {
    BigInteger bi = new BigInteger(1, bytes);
    return String.format("%0" + (bytes.length << 1) + "X", bi);
}

From source file:Main.java

public static String genRandomString(int length) {
    BigInteger bi = new BigInteger(130, random);
    return bi.toString(32);
}

From source file:Main.java

static String passwordGenerator() {
    SecureRandom random = new SecureRandom();
    return new BigInteger(130, random).toString(32);
}

From source file:Main.java

public static int getHexColorFromString(String str_value) {
    str_value = str_value.replace("#", "");
    if (str_value.length() == 6) { //RRGGBB
        return new BigInteger("ff" + str_value, 16).intValue();
    } else if (str_value.length() == 8) { //AARRGGBB
        return new BigInteger(str_value, 16).intValue();
    } else {/*from ww w . j  a  va2s. co  m*/
        return 0xffffffff;
    }
}