Package org.bouncycastle.util

Class BigIntegers

java.lang.Object

org.bouncycastle.util.BigIntegers

public final class BigIntegers
extends Object

BigInteger utilities.

Constructor Summary

Constructors

Constructor	Description
BigIntegers()

Method Summary

Modifier and Type	Method	Description
static byte[]	asUnsignedByteArray(int length, BigInteger value)	Return the passed in value as an unsigned byte array.
static byte[]	asUnsignedByteArray(BigInteger value)	Return the passed in value as an unsigned byte array.
static BigInteger	createRandomInRange(BigInteger min, BigInteger max, 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 Details

BigIntegers

public BigIntegers()

Method Details

asUnsignedByteArray

public static byte[] asUnsignedByteArray(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.

asUnsignedByteArray

public static byte[] asUnsignedByteArray(int length,
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 BigInteger createRandomInRange(BigInteger min,
BigInteger max,
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]