OpenJDK 27 · javax.crypto.spec.ChaCha20ParameterSpec

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.

Field Summary

Access	Constructor and Description
public	ChaCha20ParameterSpec(byte[] a 12-byte nonce value nonce, int the initial counter value counter) Constructs a parameter set for ChaCha20 from the given nonce and counter.

Modifier and Type	Method and Description
public int	Returns: the counter value getCounter() Returns the configured counter value.
public byte[]	Returns: the nonce value. This method returns a new array each time this method is called. getNonce() Returns the nonce value.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

counter	back to summary
private final int counter

nonce	back to summary
private final byte[] nonce

NONCE_LENGTH	back to summary
private static final int NONCE_LENGTH

ChaCha20ParameterSpec back to summary

ChaCha20ParameterSpec	back to summary
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 Exceptions NullPointerException: if `nonce` is `null` IllegalArgumentException: if `nonce` is not 12 bytes in length

public ChaCha20ParameterSpec(byte[] nonce, int counter)

Constructs a parameter set for ChaCha20 from the given nonce and counter.

Parameters

Exceptions

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

getCounter

public int getCounter()

Returns the configured counter value.

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

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.