Package Summary Overview Summary

class:ChaCha20ParameterSpec [NONE]

All Implemented Interfaces:

AlgorithmParameterSpec
```
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.

Since:

11

constructor:<init>(byte[],int) [NONE]

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 - if nonce is null

IllegalArgumentException - if nonce is not 12 bytes in length

method:getNonce() [NONE]

getNonce
```
public byte[] getNonce()
```
Returns the nonce value.

Returns:

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

method:getCounter() [NONE]

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

Returns:

the counter value

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