Class ECFieldFp

All Implemented Interfaces:
ECField 
public class ECFieldFp
extends Object
implements ECField

This immutable class defines an elliptic curve (EC) prime finite field.

Since:
1.5
See Also:
ECField

Constructors

Constructor Description
ECFieldFp​(BigInteger p)

Creates an elliptic curve prime finite field with the specified prime p.

Methods

Modifier and Type Method Description
boolean equals​(Object obj)

Compares this prime finite field for equality with the specified object.
int getFieldSize()

Returns the field size in bits which is size of prime p for this prime finite field.
BigInteger getP()

Returns the prime p of this prime finite field.
int hashCode()

Returns a hash code value for this prime finite field.

Methods declared in class java.lang.Object

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

Constructors

ECFieldFp

public ECFieldFp(BigInteger p)

Creates an elliptic curve prime finite field with the specified prime p.

Parameters:
p - the prime.
Throws:
NullPointerException - if p is null.
IllegalArgumentException - if p is not positive.

Methods

getFieldSize

public int getFieldSize()

Returns the field size in bits which is size of prime p for this prime finite field.

Specified by:
getFieldSize in interface ECField
Returns:
the field size in bits.

getP

public BigInteger getP()

Returns the prime p of this prime finite field.

Returns:
the prime.

equals

public boolean equals(Object obj)

Compares this prime finite field for equality with the specified object.

Overrides:
equals in class Object
Parameters:
obj - the object to be compared.
Returns:
true if obj is an instance of ECFieldFp and the prime value match, false otherwise.
See Also:
Object.hashCode(), HashMap

hashCode

public int hashCode()

Returns a hash code value for this prime finite field.

Overrides:
hashCode in class Object
Returns:
a hash code value.
See Also:
Object.equals(java.lang.Object), System.identityHashCode(java.lang.Object)