com.perisic.ring
Class FinitePrimeField

java.lang.Object
  com.perisic.ring.Ring
      com.perisic.ring.ModularIntegerRing
          com.perisic.ring.FinitePrimeField

public class FinitePrimeField
extends ModularIntegerRing

Title: FinitePrimeField

Description: This class represents a finite prime field. In fact it is not checked if the modulus is a prime, so it is the responsibility of the user to ensure this.

Using a non prime as modulus can lead to an ArithmeticException in the BigInteger.gcd() method.

• Last Change: 13.12.2003: GPL, MC.
• Copyright:(c) Marc Conrad, 2002, 2003
• Email: ring@perisic.com. Please let me know if you use this software.
• WWW: www.ring.perisic.com
• The com.perisic.ring library is distributed under the terms of the GNU Lesser General Public License (LGPL).
• If you require the package under a different licence please contact me.
• disclaimer: The classes are provided "as is". There is no warranty implied by using the com.perisic.ring package.

Version:

0.2

Author:

Marc Conrad

Field Summary

Fields inherited from class com.perisic.ring.Ring

C, F2, Q, R, Z

Constructor Summary

FinitePrimeField(int m)
Generates a finite prime field of characteristic m.

FinitePrimeField(java.lang.Object modulus)
Generates a finite prime field of characteristic modulus.

Method Summary

boolean

isField() returns true.

Methods inherited from class com.perisic.ring.ModularIntegerRing

add, equals, equalZero, getModulus, inv, map, mult, neg, one, tdiv, toBigInteger, zero

Methods inherited from class com.perisic.ring.Ring

div, ediv, eltToString, equal, evaluatePolynomial, gcd, isEuclidian, isUFD, map, map, map, map, mod, pow, pow, sub

Methods inherited from class java.lang.Object

getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FinitePrimeField

public FinitePrimeField(java.lang.Object modulus)

Generates a finite prime field of characteristic modulus. The argument can be any Object which can be maped into an IntegerRingElt (via the IntegerRing.Z.map() method). Note: The primality of modulus is not checked!

FinitePrimeField

public FinitePrimeField(int m)

Generates a finite prime field of characteristic m. Note: The primality of m is not checked!

Method Detail

isField

public boolean isField()

returns true. This is in fact the only difference to the ModularRing class.

Overrides:

isField in class Ring