ECFieldFp (Java Platform SE 7 b138)

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

Constructor Summary

Constructors
Constructor and Description

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

Constructors
Constructor and Description
`ECFieldFp(BigInteger p)` Creates an elliptic curve prime finite field with the specified prime `p`.

Method Summary

Methods
Modifier and Type	Method and 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 inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - 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.
- Method Detail
  - 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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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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DRAFT ea-b138

Class ECFieldFp

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

ECFieldFp

Method Detail

getFieldSize

getP

equals

hashCode