Stay organized with collections
Save and categorize content based on your preferences.
ChaCha20ParameterSpec
public
final
class
ChaCha20ParameterSpec
extends Object
implements
AlgorithmParameterSpec
This class specifies the parameters used with the
ChaCha20
algorithm.
The parameters consist of a 12-byte nonce and an initial
counter value expressed as a 32-bit integer.
This class can be used to initialize a Cipher object that
implements the ChaCha20 algorithm.
Summary
Public constructors |
|---|
ChaCha20ParameterSpec(byte[] nonce, int counter)
Constructs a parameter set for ChaCha20 from the given nonce
and counter.
|
Public methods |
|---|
int
|
getCounter()
Returns the configured counter value.
|
byte[]
|
getNonce()
Returns the nonce value.
|
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
ChaCha20ParameterSpec
public ChaCha20ParameterSpec (byte[] nonce,
int counter)
Constructs a parameter set for ChaCha20 from the given nonce
and counter.
| Parameters |
|---|
nonce |
byte: a 12-byte nonce value |
counter |
int: the initial counter value |
Public methods
getCounter
public int getCounter ()
Returns the configured counter value.
| Returns |
|---|
int |
the counter value |
getNonce
public byte[] getNonce ()
Returns the nonce value.
| Returns |
|---|
byte[] |
the nonce value. This method returns a new array each time
this method is called. |
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.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-02-10 UTC."],[],[],null,["# ChaCha20ParameterSpec\n\nAdded in [API level 35](/guide/topics/manifest/uses-sdk-element#ApiLevels) \nSummary: [Ctors](#pubctors) \\| [Methods](#pubmethods) \\| [Inherited Methods](#inhmethods) \n\nChaCha20ParameterSpec\n=====================\n\n\n`\npublic\n\nfinal\n\nclass\nChaCha20ParameterSpec\n`\n\n\n`\n\nextends `[Object](/reference/java/lang/Object)`\n\n\n`\n\n`\n\n\nimplements\n\n`[AlgorithmParameterSpec](/reference/java/security/spec/AlgorithmParameterSpec)`\n\n\n`\n\n|---|-----------------------------------------|\n| [java.lang.Object](/reference/java/lang/Object) ||\n| ↳ | javax.crypto.spec.ChaCha20ParameterSpec |\n\n\u003cbr /\u003e\n\n*** ** * ** ***\n\nThis class specifies the parameters used with the\n[*ChaCha20*](https://tools.ietf.org/html/rfc7539)\nalgorithm.\n\nThe parameters consist of a 12-byte nonce and an initial\ncounter value expressed as a 32-bit integer.\n\nThis class can be used to initialize a `Cipher` object that\nimplements the *ChaCha20* algorithm.\n\nSummary\n-------\n\n| ### Public constructors ||\n|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---|\n| ` `[ChaCha20ParameterSpec](/reference/javax/crypto/spec/ChaCha20ParameterSpec#ChaCha20ParameterSpec(byte[],%20int))`(byte[] nonce, int counter) ` Constructs a parameter set for ChaCha20 from the given nonce and counter. |\n\n| ### Public methods ||\n|-----------|-----------------------------------------------------------------------------------------------------------------------------|\n| ` int` | ` `[getCounter](/reference/javax/crypto/spec/ChaCha20ParameterSpec#getCounter())`() ` Returns the configured counter value. |\n| ` byte[]` | ` `[getNonce](/reference/javax/crypto/spec/ChaCha20ParameterSpec#getNonce())`() ` Returns the nonce value. |\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\nPublic constructors\n-------------------\n\n### ChaCha20ParameterSpec\n\nAdded in [API level 35](/guide/topics/manifest/uses-sdk-element#ApiLevels) \n\n```\npublic ChaCha20ParameterSpec (byte[] nonce, \n int counter)\n```\n\nConstructs a parameter set for ChaCha20 from the given nonce\nand counter.\n\n\u003cbr /\u003e\n\n| Parameters ||\n|-----------|-----------------------------------------|\n| `nonce` | `byte`: a 12-byte nonce value \u003cbr /\u003e |\n| `counter` | `int`: the initial counter value \u003cbr /\u003e |\n\n| Throws ||\n|---------------------------------------------------------------------------|--------------------------------------|\n| [NullPointerException](/reference/java/lang/NullPointerException) | if `nonce` is `null` |\n| [IllegalArgumentException](/reference/java/lang/IllegalArgumentException) | if `nonce` is not 12 bytes in length |\n\nPublic methods\n--------------\n\n### getCounter\n\nAdded in [API level 35](/guide/topics/manifest/uses-sdk-element#ApiLevels) \n\n```\npublic int getCounter ()\n```\n\nReturns the configured counter value.\n\n\u003cbr /\u003e\n\n| Returns ||\n|-------|--------------------------|\n| `int` | the counter value \u003cbr /\u003e |\n\n### getNonce\n\nAdded in [API level 35](/guide/topics/manifest/uses-sdk-element#ApiLevels) \n\n```\npublic byte[] getNonce ()\n```\n\nReturns the nonce value.\n\n\u003cbr /\u003e\n\n| Returns ||\n|----------|------------------------------------------------------------------------------------------|\n| `byte[]` | the nonce value. This method returns a new array each time this method is called. \u003cbr /\u003e |"]]
