Android - An Open Handset Alliance Project

java.security
public abstract class

java.security.MessageDigestSpi

java.lang.Object
	java.security.MessageDigestSpi

This class is a Service Provider Interface (therefore the Spi suffix) for digest algorithms to be supplied by providers. Examples of digest algorithms are MD5 and SHA. A digest is a secure hash function for a stream of bytes, like a fingerprint for the stream of bytes.

Known Direct Subclasses

MessageDigest

Summary

Public Constructors

MessageDigestSpi()

Public Methods

				Object	clone()
					Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.

Protected Methods

abstract	byte[]	engineDigest()
	int	engineDigest(byte[] buf, int offset, int len)
	int	engineGetDigestLength()
abstract	void	engineReset()
abstract	void	engineUpdate(byte input)
	void	engineUpdate(ByteBuffer input)
abstract	void	engineUpdate(byte[] input, int offset, int len)

Methods inherited from class java.lang.Object

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

	Object	clone()
		Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
	boolean	equals(Object o)
		Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
	void	finalize()
		Called by the virtual machine when there are no longer any (non-weak) references to the receiver.
final	Class	getClass()
		Answers the unique instance of java.lang.Class which represents the class of the receiver.
	int	hashCode()
		Answers an integer hash code for the receiver.
final	void	notify()
		Causes one thread which is `wait` ing on the receiver to be made ready to run.
final	void	notifyAll()
		Causes all threads which are `wait` ing on the receiver to be made ready to run.
	String	toString()
		Answers a string containing a concise, human-readable description of the receiver.
final	void	wait(long time, int frac)
		Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by `notify` or `notifyAll`) or the expiration of the timeout.
final	void	wait(long time)
		Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by `notify` or `notifyAll`) or the expiration of the timeout.
final	void	wait()
		Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by `notify` or `notifyAll`).

Details

Public Constructors

public MessageDigestSpi()

Public Methods

public Object clone()

Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.

Classes which wish to support cloning must specify that they implement the Cloneable interface, since the implementation checks for this.

Throws

CloneNotSupportedException

Protected Methods

protected abstract byte[] engineDigest()

protected int engineDigest(byte[] buf, int offset, int len)

Throws

DigestException

Android - An Open Handset Alliance Project

Documentation

Goodies

java.security.MessageDigestSpi

Known Direct Subclasses

Summary

Public Constructors

Public Methods

Protected Methods

Methods inherited from class java.lang.Object

Details

Public Constructors

public MessageDigestSpi()

Public Methods

public Object clone()

Throws

Protected Methods

protected abstract byte[] engineDigest()

protected int engineDigest(byte[] buf, int offset, int len)

Throws

protected int engineGetDigestLength()

protected abstract void engineReset()

protected abstract void engineUpdate(byte input)

protected void engineUpdate(ByteBuffer input)

protected abstract void engineUpdate(byte[] input, int offset, int len)


e.g. "intent" or "activity"