程序包 java.security.spec

类 ECFieldFp

java.lang.Object

java.security.spec.ECFieldFp

所有已实现的接口:

ECField

public class ECFieldFp
extends Object
implements ECField

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

从以下版本开始:

1.5

另请参阅:

ECField

构造器概要

构造器

构造器	说明
ECFieldFp(BigInteger p)	Creates an elliptic curve prime finite field with the specified prime p.

方法概要

限定符和类型	方法	说明
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.

从类继承的方法 java.lang.Object

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

构造器详细资料

ECFieldFp

public ECFieldFp(BigInteger p)

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

参数:

p - the prime.

抛出:

NullPointerException - if p is null.

IllegalArgumentException - if p is not positive.

方法详细资料

getFieldSize

public int getFieldSize()

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

指定者:

getFieldSize 在接口中 ECField

返回:

the field size in bits.

getP

public BigInteger getP()

Returns the prime p of this prime finite field.

返回:

the prime.

equals

public boolean equals(Object obj)

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

覆盖:

equals 在类中 Object

参数:

obj - the object to be compared.

返回:

true if obj is an instance of ECFieldFp and the prime value match, false otherwise.

另请参阅:

Object.hashCode(), HashMap

hashCode

public int hashCode()

Returns a hash code value for this prime finite field.

覆盖:

hashCode 在类中 Object

返回:

a hash code value.

另请参阅:

Object.equals(java.lang.Object), System.identityHashCode(java.lang.Object)