org.nuiton.util

Class MD5InputStreamTest.MD5

java.lang.Object

org.nuiton.util.MD5InputStreamTest.MD5

Enclosing class:

MD5InputStreamTest

public static class MD5InputStreamTest.MD5
extends Object

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and 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[]	Final() Returns array of bytes (16 bytes) representing hash as of the current state of this object.
static byte[]	getHash(File f)
static boolean	hashesEqual(byte[] hash1, byte[] hash2)
void	Init() Initialize MD5 internal state (object can be reused just by calling Init() after every Final()
static void	initNativeLibrary(boolean disallow_lib_loading)
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)
void	Update(int i)
void	Update(org.nuiton.util.MD5InputStreamTest.MD5State stat, byte[] buffer, int offset, int length) Updates hash with the bytebuffer given (using at maximum length bytes from that buffer)
void	Update(String s) Update buffer with given string.
void	Update(String s, String charset_name) Update buffer with given string using the given encoding.

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 void Init()

Initialize MD5 internal state (object can be reused just by calling Init() after every Final()

Update

public void Update(org.nuiton.util.MD5InputStreamTest.MD5State stat,
                   byte[] buffer,
                   int offset,
                   int length)

Updates hash with the bytebuffer given (using at maximum length bytes from that buffer)

Parameters:

stat - Which state is updated

buffer - Array of bytes to be hashed

offset - Offset to buffer array

length - Use at maximum `length' bytes (absolute maximum is buffer.length)

Update

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

Update

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

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

public void Update(byte b)

Updates hash with a single byte

Parameters:

b - Single byte to update the hash

Update

public void Update(String s)

Update buffer with given string. Note that because the version of the s.getBytes() method without parameters is used to convert the string to a byte array, the results of this method may be different on different platforms. The s.getBytes() method converts the string into a byte array using the current platform's default character set and may therefore have different results on platforms with different default character sets. If a version that works consistently across platforms with different default character sets is desired, use the overloaded version of the Update() method which takes a string and a character encoding.

Parameters:

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

Update

public void Update(String s,
                   String charset_name)
            throws UnsupportedEncodingException

Update buffer with given string using the given encoding. If the given encoding is null, the encoding "ISO8859_1" is used.

Parameters:

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

charset_name - The character set to use to convert s to a byte array, or null if the "ISO8859_1" character set is desired.

Throws:

UnsupportedEncodingException - If the named charset is not supported.

Update

public void Update(int i)

Final

public byte[] Final()

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

initNativeLibrary

public static final void initNativeLibrary(boolean disallow_lib_loading)

getHash

public static byte[] getHash(File f)
                      throws IOException

Throws:

IOException

hashesEqual

public static boolean hashesEqual(byte[] hash1,
                                  byte[] hash2)