gnu.crypto.jce.hash
Class MessageDigestAdapter
MessageDigestSpi
gnu.crypto.jce.hash.MessageDigestAdapter
- Cloneable
(package private) class MessageDigestAdapter
extends MessageDigestSpi
implements Cloneable
The implementation of a generic
MessageDigest
adapter
class to wrap gnu.crypto hash instances.
This class defines the
Service Provider Interface (
SPI) for the
MessageDigest
class, which provides the functionality
of a message digest algorithm, such as MD5 or SHA. Message digests are secure
one-way hash functions that take arbitrary-sized data and output a fixed-
length hash value.
All the abstract methods in the
MessageDigestSpi
class
are implemented by this class and all its sub-classes.
All the implementations which subclass this object, and which are serviced by
the GNU Crypto provider implement the
Cloneable
interface.
MessageDigestAdapter
protected MessageDigestAdapter(String mdName)
Trivial protected constructor.
mdName
- the canonical name of the hash algorithm.
clone
public Object clone()
engineDigest
public byte[] engineDigest()
engineDigest
public int engineDigest(byte[] buf,
int offset,
int len)
throws DigestException
engineGetDigestLength
public int engineGetDigestLength()
engineReset
public void engineReset()
engineUpdate
public void engineUpdate(byte input)
engineUpdate
public void engineUpdate(byte[] input,
int offset,
int len)
Copyright © 2001, 2002, 2003
Free Software Foundation,
Inc. All Rights Reserved.