Class 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.

Constructor Summary

Constructors
Constructor	Description
`ChaCha20ParameterSpec(byte[] nonce, int counter)`	Constructs a parameter set for ChaCha20 from the given nonce and counter.

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`getCounter()`	Returns the configured counter value.
`byte[]`	`getNonce()`	Returns the nonce value.

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

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 - if nonce is null; IllegalArgumentException - if nonce is not 12 bytes in length

public byte[] getNonce()

Returns the nonce value.

Returns:: the nonce value. This method returns a new array each time this method is called.

public int getCounter()

Returns the configured counter value.