Class ECFieldFp

• java.lang.Object
• • java.security.spec.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

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)