Skip navigation links

oracle.security.crypto.core
Class MD5

java.lang.Object
oracle.security.crypto.core.MessageDigest
oracle.security.crypto.core.MD5

All Implemented Interfaces:

java.lang.Cloneable

public final class MD5

extends MessageDigest

The MD5 Message Digest algorithm, as specified in RFC 1321.

See Also:

MessageDigest, SHA

Nested Class Summary

Nested classes/interfaces inherited from class oracle.security.crypto.core.MessageDigest

MessageDigest.MDState

Field Summary

Fields inherited from class oracle.security.crypto.core.MessageDigest

algID

Constructor Summary

MD5()
Empty constructor.

Method Summary

java.lang.String	algName() Returns the algorithm name of this message digest.
int	blockSize() Returns the blocksize of this instance.
java.lang.Object	clone() Returns a clone of this message digest object.
void	computeCurrent() Completes the hash computation, performing any necessary operations such as padding.
AlgorithmIdentifier	getAlgID() Returns the algorithm identifier of this object.
byte[]	getDigestBits() Returns a copy of the current digest bytes.
int	getDigestLength() Returns the length in bytes of the message digest.
protected MessageDigest.MDState	getState() Gets the state of this MessageDigest instance.
void	init() Resets the digest to its initial state.
boolean	isValid() Returns true if this MD5 is in a valid state and its digest bits are usable; otherwise returns false.
protected void	setState(MessageDigest.MDState state) Sets the state of this MessageDigest instance.
void	update(byte b) Adds the specifed byte to the data being digested.
void	update(byte[] input, int off, int len) Adds the specified sequence of bytes to the data being digested.

Methods inherited from class oracle.security.crypto.core.MessageDigest

computeDigest, computeDigest, getInstance, isEqual, setAlgID, toString, update, update, update, update, update, update, update, update, update, update, update, updateASCII

Methods inherited from class java.lang.Object

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

Constructor Detail

MD5

public MD5()

Empty constructor.

Method Detail

getAlgID

public AlgorithmIdentifier getAlgID()

Description copied from class: MessageDigest

Returns the algorithm identifier of this object.

Specified by:

getAlgID in class MessageDigest

Returns:

An AlgorithIdentifier object representing the hash algorithm of this MessageDigest instance.

blockSize

public int blockSize()

Description copied from class: MessageDigest

Returns the blocksize of this instance.

Specified by:

blockSize in class MessageDigest

init

public void init()

Resets the digest to its initial state.

Specified by:

init in class MessageDigest

update

public void update(byte b)

Adds the specifed byte to the data being digested.

Specified by:

update in class MessageDigest

update

public void update(byte[] input,
                   int off,
                   int len)

Adds the specified sequence of bytes to the data being digested.

Overrides:

update in class MessageDigest

Parameters:

input - the input array

off - start position in the input array

len - the number of input array elements to add to the data being digested

computeCurrent

public void computeCurrent()

Completes the hash computation, performing any necessary operations such as padding. The final result of the hash is stored in digestBits.

Specified by:

computeCurrent in class MessageDigest

algName

public java.lang.String algName()

Returns the algorithm name of this message digest.

Specified by:

algName in class MessageDigest

Returns:

"MD5"

getDigestLength

public int getDigestLength()

Returns the length in bytes of the message digest.

Specified by:

getDigestLength in class MessageDigest

getDigestBits

public byte[] getDigestBits()

Returns a copy of the current digest bytes.

Overrides:

getDigestBits in class MessageDigest

isValid

public boolean isValid()

Returns true if this MD5 is in a valid state and its digest bits are usable; otherwise returns false.

Overrides:

isValid in class MessageDigest

clone

public java.lang.Object clone()

Returns a clone of this message digest object.

Specified by:

clone in class MessageDigest

getState

protected MessageDigest.MDState getState()

Description copied from class: MessageDigest

Gets the state of this MessageDigest instance.

Specified by:

getState in class MessageDigest

setState

protected void setState(MessageDigest.MDState state)

Description copied from class: MessageDigest

Sets the state of this MessageDigest instance.

Specified by:

setState in class MessageDigest

Skip navigation links