Module com.aoapps.hodgepodge

Package com.aoapps.hodgepodge.md5

Class MD5

java.lang.Object

com.aoapps.hodgepodge.md5.MD5

public class MD5
extends Object

Implementation of RSA's MD5 hash generator.

Version:

$Revision: 1.2 $

Author:

Santeri Paavolainen <sjpaavol@cc.helsinki.fi>

Constructor Summary

Constructors

Constructor	Description
MD5()	Class constructor.
MD5(Object ob)	Initialize class, and update hash with ob.toString()

Method Summary

Modifier and Type	Method	Description
String	asHex()	Returns 32-character hex representation of this objects hash.
static String	asHex(byte[] hash)	Turns array of bytes into string representing each byte as unsigned hex number.
byte[]	digest()	Returns array of bytes (16 bytes) representing hash as of the current state of this object.
byte[]	Final()	Deprecated. Please use digest() instead.
static long	getMD5Hi(byte[] md5)
static long	getMD5Hi(String md5)
static long	getMD5Lo(byte[] md5)
static long	getMD5Lo(String md5)
static String	getMD5String(long md5Hi, long md5Lo)
void	init()	Initialize MD5 internal state (object can be reused just by calling init() after every digest().
void	Init()	Deprecated. Please use init() instead.
void	update(byte b)	Updates hash with a single byte.
void	update(byte[] buffer)	Updates hash with given array of bytes.
void	update(byte[] buffer, int length)
void	update(byte[] buffer, int offset, int length)	Plain update, updates this object.
void	update(int i)	Update buffer with a single integer (only & 0xff part is used, as a byte).
void	update(String s)	Update buffer with given string.
void	Update(byte b)	Deprecated. Please use update(byte) instead.
void	Update(byte[] buffer)	Deprecated. Please use update(byte[]) instead.
void	Update(byte[] buffer, int length)	Deprecated. Please use update(byte[], int) instead.
void	Update(byte[] buffer, int offset, int length)	Deprecated. Please use update(byte[], int, int) instead.
void	Update(int i)	Deprecated. Please use update(int) instead.
void	Update(String s)	Deprecated. Please use update(java.lang.String) instead.

Methods inherited from class java.lang.Object

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

Constructor Detail

MD5

public MD5()

Class constructor.

MD5

public MD5(Object ob)

Initialize class, and update hash with ob.toString()

Parameters:

ob - Object, ob.toString() is used to update hash after initialization

Method Detail

init

public final void init()

Initialize MD5 internal state (object can be reused just by calling init() after every digest().

Init

@Deprecated
public final void Init()

Deprecated.

Please use init() instead.

Initialize MD5 internal state (object can be reused just by calling init() after every digest().

update

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

Plain update, updates this object.

Update

@Deprecated
public final void Update(byte[] buffer,
                         int offset,
                         int length)

Deprecated.

Please use update(byte[], int, int) instead.

update

public void update(byte[] buffer,
                   int length)

Update

@Deprecated
public final void Update(byte[] buffer,
                         int length)

Deprecated.

Please use update(byte[], int) instead.

update

public void update(byte[] buffer)

Updates hash with given array of bytes.

Parameters:

buffer - Array of bytes to use for updating the hash

Update

@Deprecated
public final void Update(byte[] buffer)

Deprecated.

Please use update(byte[]) instead.

Updates hash with given array of bytes.

Parameters:

buffer - Array of bytes to use for updating the hash

update

public void update(byte b)

Updates hash with a single byte.

Parameters:

b - Single byte to update the hash

Update

@Deprecated
public final void Update(byte b)

Deprecated.

Please use update(byte) instead.

Updates hash with a single byte.

Parameters:

b - Single byte to update the hash

update

public final void update(String s)

Update buffer with given string.

Parameters:

s - String to be update to hash (is used as s.getBytes())

Update

@Deprecated
public final void Update(String s)

Deprecated.

Please use update(java.lang.String) instead.

Update buffer with given string.

Parameters:

s - String to be update to hash (is used as s.getBytes())

update

public void update(int i)

Update buffer with a single integer (only & 0xff part is used, as a byte).

Parameters:

i - Integer value, which is then converted to byte as i & 0xff

Update

@Deprecated
public final void Update(int i)

Deprecated.

Please use update(int) instead.

Update buffer with a single integer (only & 0xff part is used, as a byte).

Parameters:

i - Integer value, which is then converted to byte as i & 0xff

digest

public byte[] digest()

Returns array of bytes (16 bytes) representing hash as of the current state of this object. Note: getting a hash does not invalidate the hash object, it only creates a copy of the real state which is finalized.

Returns:

Array of 16 bytes, the hash of all updated bytes

Final

@Deprecated
public final byte[] Final()

Deprecated.

Please use digest() instead.

Returns array of bytes (16 bytes) representing hash as of the current state of this object. Note: getting a hash does not invalidate the hash object, it only creates a copy of the real state which is finalized.

Returns:

Array of 16 bytes, the hash of all updated bytes

asHex

public static String asHex(byte[] hash)

Turns array of bytes into string representing each byte as unsigned hex number.

Parameters:

hash - Array of bytes to convert to hex-string

Returns:

Generated hex string

asHex

public String asHex()

Returns 32-character hex representation of this objects hash.

Returns:

String of this object's hash

getMD5String

public static String getMD5String(long md5Hi,
                                  long md5Lo)

getMD5Hi

public static long getMD5Hi(byte[] md5)

getMD5Hi

public static long getMD5Hi(String md5)
                     throws IllegalArgumentException

Throws:

IllegalArgumentException

getMD5Lo

public static long getMD5Lo(byte[] md5)

getMD5Lo

public static long getMD5Lo(String md5)
                     throws IllegalArgumentException

Throws:

IllegalArgumentException