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java.lang.Objectcryptix.security.MessageHash
This class represents the output from a message digest, in a form where the type can be ascertained.
Copyright © 1995-1997
Systemics Ltd
on behalf of the
Cryptix Development Team.
All rights reserved.
$Revision: 1.3 $
Constructor Summary | |
MessageHash(java.lang.String algorithm,
byte[] hash)
Constructs a MessageHash for the specified algorithm name. |
Method Summary | |
boolean |
equals(java.lang.Object obj)
Tests whether this object is equal to another object. |
static MessageHash |
fromDigest(MessageDigest md)
Creates a MessageHash with the value found by calling the digest()
method on md. |
static MessageHash |
fromDigest(MessageDigest md,
byte[] data)
Creates a MessageHash with the value found by calling the digest(byte[])
method on md. |
java.lang.String |
getAlgorithm()
Returns the name of the algorithm associated with this hash. |
int |
hashCode()
|
int |
length()
Returns the hash length in bytes. |
byte[] |
toByteArray()
Returns the hash as a new byte array. |
java.lang.String |
toString()
Returns a big endian Hex string showing the value of the hash, prefixed by the standard algorithm name and a colon. |
Methods inherited from class java.lang.Object |
clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Constructor Detail |
public MessageHash(java.lang.String algorithm, byte[] hash)
algorithm
- the name of the MessageDigest algorithm.hash
- a byte array containing the hash.
java.lang.NullPointerException
- if algorithm == null || hash == nullMethod Detail |
public static MessageHash fromDigest(MessageDigest md)
digest()
method on md. This causes md to be reset. It is equivalent to:
new MessageHash(md.name(), md.digest())
public static MessageHash fromDigest(MessageDigest md, byte[] data)
digest(byte[])
method on md. This causes md to be reset. It is equivalent to:
new MessageHash(md.name(), md.digest(data))
public java.lang.String getAlgorithm()
public final byte[] toByteArray()
public final int length()
public int hashCode()
public boolean equals(java.lang.Object obj)
Two MessageHash objects are equal iff they are for the same algorithm, and have the same value as a sequence of bytes.
public java.lang.String toString()
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