ChaCha20ParameterSpec (Java SE 15 & JDK 15) (original) (raw)

All Implemented Interfaces:

[AlgorithmParameterSpec](../../../java/security/spec/AlgorithmParameterSpec.html "interface in java.security.spec")

public final class ChaCha20ParameterSpec extends Object implements AlgorithmParameterSpec

This class specifies the parameters used with theChaCha20 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.

Since:

11

• Constructor Summary

Constructors

• Method Summary

Methods declared in class java.lang.Object

[clone](../../../java/lang/Object.html#clone%28%29), [equals](../../../java/lang/Object.html#equals%28java.lang.Object%29), [finalize](../../../java/lang/Object.html#finalize%28%29), [getClass](../../../java/lang/Object.html#getClass%28%29), [hashCode](../../../java/lang/Object.html#hashCode%28%29), [notify](../../../java/lang/Object.html#notify%28%29), [notifyAll](../../../java/lang/Object.html#notifyAll%28%29), [toString](../../../java/lang/Object.html#toString%28%29), [wait](../../../java/lang/Object.html#wait%28%29), [wait](../../../java/lang/Object.html#wait%28long%29), [wait](../../../java/lang/Object.html#wait%28long,int%29)

• Constructor Details

  • ChaCha20ParameterSpec

  public ChaCha20ParameterSpec​(byte[] nonce, int counter)
  Constructs a parameter set for ChaCha20 from the given nonce and counter.
  Parameters:
  nonce - a 12-byte nonce value
  counter - the initial counter value
  Throws:
  [NullPointerException](../../../java/lang/NullPointerException.html "class in java.lang") - if nonce is null
[IllegalArgumentException](../../../java/lang/IllegalArgumentException.html "class in java.lang") - if nonce is not 12 bytes in length

• Method Details

  • getNonce

  public byte[] getNonce()
  Returns the nonce value.
  Returns:
  the nonce value. This method returns a new array each time this method is called.

  • getCounter

  public int getCounter()
  Returns the configured counter value.
  Returns:
  the counter value