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ECFieldFp
public
class
ECFieldFp
extends Object
implements
ECField
This immutable class defines an elliptic curve (EC) prime
finite field.
Summary
Public constructors |
|---|
ECFieldFp(BigInteger p)
Creates an elliptic curve prime finite field
with the specified prime p.
|
Public methods |
|---|
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.
|
Inherited methods |
|---|
From class
java.lang.Object
Object
|
clone()
Creates and returns a copy of this object.
|
boolean
|
equals(Object obj)
Indicates whether some other object is "equal to" this one.
|
void
|
finalize()
Called by the garbage collector on an object when garbage collection
determines that there are no more references to the object.
|
final
Class<?>
|
getClass()
Returns the runtime class of this Object.
|
int
|
hashCode()
Returns a hash code value for the object.
|
final
void
|
notify()
Wakes up a single thread that is waiting on this object's
monitor.
|
final
void
|
notifyAll()
Wakes up all threads that are waiting on this object's monitor.
|
String
|
toString()
Returns a string representation of the object.
|
final
void
|
wait(long timeoutMillis, int nanos)
Causes the current thread to wait until it is awakened, typically
by being notified or interrupted, or until a
certain amount of real time has elapsed.
|
final
void
|
wait(long timeoutMillis)
Causes the current thread to wait until it is awakened, typically
by being notified or interrupted, or until a
certain amount of real time has elapsed.
|
final
void
|
wait()
Causes the current thread to wait until it is awakened, typically
by being notified or interrupted.
|
|
|
|
Public constructors
ECFieldFp
public ECFieldFp (BigInteger p)
Creates an elliptic curve prime finite field
with the specified prime p.
| Parameters |
|---|
p |
BigInteger: the prime. |
Public methods
equals
public boolean equals (Object obj)
Compares this prime finite field for equality with the
specified object.
| Parameters |
|---|
obj |
Object: the object to be compared. |
| Returns |
|---|
boolean |
true if obj is an instance
of ECFieldFp and the prime value match, false otherwise. |
getFieldSize
public int getFieldSize ()
Returns the field size in bits which is size of prime p
for this prime finite field.
| Returns |
|---|
int |
the field size in bits. |
getP
public BigInteger getP ()
Returns the prime p of this prime finite field.
hashCode
public int hashCode ()
Returns a hash code value for this prime finite field.
| Returns |
|---|
int |
a hash code value. |
Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
Last updated 2025-02-10 UTC.
[null,null,["Last updated 2025-02-10 UTC."],[],[],null,["# ECFieldFp\n\nAdded in [API level 1](/guide/topics/manifest/uses-sdk-element#ApiLevels) \nSummary: [Ctors](#pubctors) \\| [Methods](#pubmethods) \\| [Inherited Methods](#inhmethods) \n\nECFieldFp\n=========\n\n\n`\npublic\n\n\nclass\nECFieldFp\n`\n\n\n`\n\nextends `[Object](/reference/java/lang/Object)`\n\n\n`\n\n`\n\n\nimplements\n\n`[ECField](/reference/java/security/spec/ECField)`\n\n\n`\n\n|---|------------------------------|\n| [java.lang.Object](/reference/java/lang/Object) ||\n| ↳ | java.security.spec.ECFieldFp |\n\n\u003cbr /\u003e\n\n*** ** * ** ***\n\nThis immutable class defines an elliptic curve (EC) prime\nfinite field. \n**See also:**\n\n- [ECField](/reference/java/security/spec/ECField)\n\nSummary\n-------\n\n| ### Public constructors ||\n|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---|\n| ` `[ECFieldFp](/reference/java/security/spec/ECFieldFp#ECFieldFp(java.math.BigInteger))`(`[BigInteger](/reference/java/math/BigInteger)` p) ` Creates an elliptic curve prime finite field with the specified prime `p`. |\n\n| ### Public methods ||\n|--------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| ` boolean` | ` `[equals](/reference/java/security/spec/ECFieldFp#equals(java.lang.Object))`(`[Object](/reference/java/lang/Object)` obj) ` Compares this prime finite field for equality with the specified object. |\n| ` int` | ` `[getFieldSize](/reference/java/security/spec/ECFieldFp#getFieldSize())`() ` Returns the field size in bits which is size of prime p for this prime finite field. |\n| ` `[BigInteger](/reference/java/math/BigInteger) | ` `[getP](/reference/java/security/spec/ECFieldFp#getP())`() ` Returns the prime `p` of this prime finite field. |\n| ` int` | ` `[hashCode](/reference/java/security/spec/ECFieldFp#hashCode())`() ` Returns a hash code value for this prime finite field. |\n\n| ### Inherited methods |\n|-----------------------|---|\n| From class ` `[java.lang.Object](/reference/java/lang/Object)` ` |---------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ` `[Object](/reference/java/lang/Object) | ` `[clone](/reference/java/lang/Object#clone())`() ` Creates and returns a copy of this object. | | ` boolean` | ` `[equals](/reference/java/lang/Object#equals(java.lang.Object))`(`[Object](/reference/java/lang/Object)` obj) ` Indicates whether some other object is \"equal to\" this one. | | ` void` | ` `[finalize](/reference/java/lang/Object#finalize())`() ` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. | | ` final `[Class](/reference/java/lang/Class)`\u003c?\u003e` | ` `[getClass](/reference/java/lang/Object#getClass())`() ` Returns the runtime class of this `Object`. | | ` int` | ` `[hashCode](/reference/java/lang/Object#hashCode())`() ` Returns a hash code value for the object. | | ` final void` | ` `[notify](/reference/java/lang/Object#notify())`() ` Wakes up a single thread that is waiting on this object's monitor. | | ` final void` | ` `[notifyAll](/reference/java/lang/Object#notifyAll())`() ` Wakes up all threads that are waiting on this object's monitor. | | ` `[String](/reference/java/lang/String) | ` `[toString](/reference/java/lang/Object#toString())`() ` Returns a string representation of the object. | | ` final void` | ` `[wait](/reference/java/lang/Object#wait(long,%20int))`(long timeoutMillis, int nanos) ` Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*, or until a certain amount of real time has elapsed. | | ` final void` | ` `[wait](/reference/java/lang/Object#wait(long))`(long timeoutMillis) ` Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*, or until a certain amount of real time has elapsed. | | ` final void` | ` `[wait](/reference/java/lang/Object#wait())`() ` Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*. | ||\n| From interface ` `[java.security.spec.ECField](/reference/java/security/spec/ECField)` ` |-----------------|--------------------------------------------------------------------------------------------------------------| | ` abstract int` | ` `[getFieldSize](/reference/java/security/spec/ECField#getFieldSize())`() ` Returns the field size in bits. | ||\n\nPublic constructors\n-------------------\n\n### ECFieldFp\n\nAdded in [API level 1](/guide/topics/manifest/uses-sdk-element#ApiLevels) \n\n```\npublic ECFieldFp (BigInteger p)\n```\n\nCreates an elliptic curve prime finite field\nwith the specified prime `p`.\n\n\u003cbr /\u003e\n\n| Parameters ||\n|-----|---------------------------------|\n| `p` | `BigInteger`: the prime. \u003cbr /\u003e |\n\n| Throws ||\n|---------------------------------------------------------------------------|-------------------------|\n| [NullPointerException](/reference/java/lang/NullPointerException) | if `p` is null. |\n| [IllegalArgumentException](/reference/java/lang/IllegalArgumentException) | if `p` is not positive. |\n\nPublic methods\n--------------\n\n### equals\n\nAdded in [API level 1](/guide/topics/manifest/uses-sdk-element#ApiLevels) \n\n```\npublic boolean equals (Object obj)\n```\n\nCompares this prime finite field for equality with the\nspecified object.\n\n\u003cbr /\u003e\n\n| Parameters ||\n|-------|---------------------------------------------|\n| `obj` | `Object`: the object to be compared. \u003cbr /\u003e |\n\n| Returns ||\n|-----------|----------------------------------------------------------------------------------------------|\n| `boolean` | true if `obj` is an instance of ECFieldFp and the prime value match, false otherwise. \u003cbr /\u003e |\n\n### getFieldSize\n\nAdded in [API level 1](/guide/topics/manifest/uses-sdk-element#ApiLevels) \n\n```\npublic int getFieldSize ()\n```\n\nReturns the field size in bits which is size of prime p\nfor this prime finite field.\n\n\u003cbr /\u003e\n\n| Returns ||\n|-------|--------------------------------|\n| `int` | the field size in bits. \u003cbr /\u003e |\n\n### getP\n\nAdded in [API level 1](/guide/topics/manifest/uses-sdk-element#ApiLevels) \n\n```\npublic BigInteger getP ()\n```\n\nReturns the prime `p` of this prime finite field.\n\n\u003cbr /\u003e\n\n| Returns ||\n|-----------------------------------------------|-------------------|\n| [BigInteger](/reference/java/math/BigInteger) | the prime. \u003cbr /\u003e |\n\n### hashCode\n\nAdded in [API level 1](/guide/topics/manifest/uses-sdk-element#ApiLevels) \n\n```\npublic int hashCode ()\n```\n\nReturns a hash code value for this prime finite field.\n\n\u003cbr /\u003e\n\n| Returns ||\n|-------|---------------------------|\n| `int` | a hash code value. \u003cbr /\u003e |"]]
