Package com.southernstorm.noise.crypto

Class Poly1305

java.lang.Object

com.southernstorm.noise.crypto.Poly1305

All Implemented Interfaces:

Destroyable

public final class Poly1305
extends Object
implements Destroyable

Simple implementation of the Poly1305 message authenticator.

Constructor Summary

Constructors

Constructor	Description
Poly1305()	Constructs a new Poly1305 message authenticator.

Method Summary

Modifier and Type	Method	Description
void	destroy()	Destroys all sensitive state in the current object.
void	finish(byte[] token, int offset)	Finishes the message authenticator and returns the 16-byte token.
void	pad()	Pads the input with zeroes to a multiple of 16 bytes.
void	reset(byte[] key, int offset)	Resets the message authenticator with a new key.
void	update(byte[] data, int offset, int length)	Updates the message authenticator with more input data.

Methods inherited from class java.lang.Object

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

Constructor Detail

Poly1305

public Poly1305()

Constructs a new Poly1305 message authenticator.

Method Detail

reset

public void reset(byte[] key,
                  int offset)

Resets the message authenticator with a new key.

Parameters:

key - The buffer containing the 32 byte key.

offset - The offset into the buffer of the first key byte.

update

public void update(byte[] data,
                   int offset,
                   int length)

Updates the message authenticator with more input data.

Parameters:

data - The buffer containing the input data.

offset - The offset of the first byte of input.

length - The number of bytes of input.

pad

public void pad()

Pads the input with zeroes to a multiple of 16 bytes.

finish

public void finish(byte[] token,
                   int offset)

Finishes the message authenticator and returns the 16-byte token.

Parameters:

token - The buffer to receive the token.

offset - The offset of the token in the buffer.

destroy

public void destroy()

Description copied from interface: Destroyable

Destroys all sensitive state in the current object.

Specified by:

destroy in interface Destroyable