iaik.security.ec.math.field

Class PrimeFieldByBitLengthFactory

java.lang.Object

iaik.security.ec.math.field.PrimeFieldByBitLengthFactory

public final class PrimeFieldByBitLengthFactory
extends Object

This factory serves prime fields of a specific bitlength. It chooses such primes at random and returns the corresponding finite field. In case there is an optimized implementation of a field, it automatically returns this one.

Author:

Christian Hanser

See Also:

AbstractPrimeField, PrimeFieldByPrimeFactory

Method Summary

Modifier and Type	Method and Description
static AbstractPrimeField	getField(int bitLength) Constructs a prime field for a given bitlength.
static AbstractPrimeField	getField(int bitLength, Random random) Constructs a prime field for a given bitlength.

Methods inherited from class java.lang.Object

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

Method Detail

getField

public static AbstractPrimeField getField(int bitLength)

Constructs a prime field for a given bitlength.

Parameters:

bitLength - the bitlength of the prime

Returns:

the prime finite field F_p

getField

public static AbstractPrimeField getField(int bitLength,
                                          Random random)

Constructs a prime field for a given bitlength.

Parameters:

bitLength - the bitlength of the prime

random - the random to be used for prime generation

Returns:

the prime finite field F_p