org.gudy.bouncycastle.util
Class BigIntegers

java.lang.Object
  org.gudy.bouncycastle.util.BigIntegers

public final class BigIntegers
extends java.lang.Object

BigInteger utilities.

Constructor Summary

BigIntegers()

Method Summary

static byte[]	asUnsignedByteArray(java.math.BigInteger value) Return the passed in value as an unsigned byte array.
static java.math.BigInteger	createRandomInRange(java.math.BigInteger min, java.math.BigInteger max, java.security.SecureRandom random) Return a random BigInteger not less than 'min' and not greater than 'max'

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BigIntegers

public BigIntegers()

Method Detail

asUnsignedByteArray

public static byte[] asUnsignedByteArray(java.math.BigInteger value)

Return the passed in value as an unsigned byte array.

Parameters:

value - value to be converted.

Returns:

a byte array without a leading zero byte if present in the signed encoding.

createRandomInRange

public static java.math.BigInteger createRandomInRange(java.math.BigInteger min,
                                                       java.math.BigInteger max,
                                                       java.security.SecureRandom random)

Return a random BigInteger not less than 'min' and not greater than 'max'

Parameters:

min - the least value that may be generated

max - the greatest value that may be generated

random - the source of randomness

Returns:

a random BigInteger value in the range [min,max]