org.python.modules

Class SHA224Digest

java.lang.Object

java.security.MessageDigestSpi

java.security.MessageDigest

org.python.modules.SHA224Digest

public class SHA224Digest
extends java.security.MessageDigest

SHA-224 as described in RFC 3874. This introduces the SHA224 Digest which has been omitted from the JDK java.security. This implementation has been borrowed from the Bouncy Castle implementation of SHA2 algorithms. Since they are MIT Licensed, they are compatible with this project. Their mandatory copyright notice follows.

 Copyright (c) 2000 - 2011 The Legion Of The Bouncy Castle
 (http://www.bouncycastle.org)
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:
 
 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.
 
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 

Constructor Summary

Constructors

Constructor and Description
SHA224Digest() Standard constructor
SHA224Digest(SHA224Digest t) Copy constructor.

Method Summary

Modifier and Type	Method and Description
static int	bigEndianToInt(byte[] bs, int off)
static long	bigEndianToLong(byte[] bs, int off)
java.lang.Object	clone()
int	doFinal(byte[] out, int outOff)
void	finish()
java.lang.String	getAlgorithmName()
int	getByteLength()
int	getDigestSize()
static void	intToBigEndian(int n, byte[] bs, int off)
static void	longToBigEndian(long n, byte[] bs, int off)
void	reset()
void	update(byte in)
void	update(byte[] in, int inOff, int len)

Methods inherited from class java.security.MessageDigest

digest, digest, digest, getAlgorithm, getDigestLength, getInstance, getInstance, getInstance, getProvider, isEqual, toString, update, update

Methods inherited from class java.lang.Object

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

Constructor Detail

SHA224Digest

public SHA224Digest()

Standard constructor

SHA224Digest

public SHA224Digest(SHA224Digest t)

Copy constructor. This will copy the state of the provided message digest.

Method Detail

update

public void update(byte in)

Overrides:

update in class java.security.MessageDigest

update

public void update(byte[] in,
                   int inOff,
                   int len)

Overrides:

update in class java.security.MessageDigest

finish

public void finish()

getByteLength

public int getByteLength()

getAlgorithmName

public java.lang.String getAlgorithmName()

getDigestSize

public int getDigestSize()

doFinal

public int doFinal(byte[] out,
                   int outOff)

reset

public void reset()

Overrides:

reset in class java.security.MessageDigest

clone

public java.lang.Object clone()
                       throws java.lang.CloneNotSupportedException

Overrides:

clone in class java.security.MessageDigest

Throws:

java.lang.CloneNotSupportedException

bigEndianToInt

public static int bigEndianToInt(byte[] bs,
                                 int off)

intToBigEndian

public static void intToBigEndian(int n,
                                  byte[] bs,
                                  int off)

bigEndianToLong

public static long bigEndianToLong(byte[] bs,
                                   int off)

longToBigEndian

public static void longToBigEndian(long n,
                                   byte[] bs,
                                   int off)