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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

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)

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Documentation extracted from Debian's OpenJDK Development Kit package.
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