Java Utililty Methods BigInteger to

List of utility methods to do BigInteger to

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Description

The list of methods to do BigInteger to are organized into topic(s).

Method

StringtoStr(BigInteger number)
to Str 
StringBuilder plaintext = new StringBuilder(BLOCK_SIZE + 1);
String plaintextNumber = number.toString();
plaintextNumber = plaintextNumber.substring(1, plaintextNumber.length());
for (int i = 0; i < plaintextNumber.length(); i += 3) {
    String blockString = plaintextNumber.substring(i, i + 3);
    int block = Integer.parseInt(blockString);
    plaintext.append((char) block);
return plaintext.toString();
StringtoString(BigInteger bi)
Converte de BigInteger para String 
return bi.toString(16);
StringtoString(BigInteger[] vector)
BigInteger array to string 
if (vector.length == 0)
    return "[]";
String result = "[" + vector[0];
for (int i = 1; i < vector.length; i++)
    result += "," + vector[i];
return result + "]";
long[]toUnsigned(final BigInteger[] ulong)
to Unsigned 
final long[] retVal = new long[ulong.length];
for (int i = 0; i < retVal.length; i++) {
    retVal[i] = toUnsigned(ulong[i]);
return retVal;
BigIntegertoUnsignedBigInteger(long i)
Return a BigInteger equal to the unsigned value of the argument. 
if (i >= 0L)
    return BigInteger.valueOf(i);
else {
    int upper = (int) (i >>> 32);
    int lower = (int) i;
    return (BigInteger.valueOf(toUnsignedLong(upper))).shiftLeft(32)
            .add(BigInteger.valueOf(toUnsignedLong(lower)));
BigIntegertoUnsignedBigInteger(long number)
to Unsigned Big Integer 
return number < 0L ? BigInteger.ONE.shiftLeft(64).add(BigInteger.valueOf(number))
        : BigInteger.valueOf(number);