gnu.javax.crypto.key
Class GnuSecretKey
- Key, Serializable
A secret key composed of a sequence of raw, unformatted octets. This class is
analogous to the
SecretKeySpec
class, but is
provided for platforms that do not or cannot contain that class.
GnuSecretKey(byte[] key, int offset, int length, String algorithm) - Creates a new secret key from a portion of a byte array.
|
GnuSecretKey(byte[] key, String algorithm) - Creates a new secret key.
|
boolean | equals(Object o) - Determine whether this Object is semantically equal
to another Object.
|
String | getAlgorithm() - Returns the algorithm name, if any.
|
byte[] | getEncoded() - Returns the encoded key, which is merely the byte array this class was
created with.
|
String | getFormat() - Returns the string "RAW".
|
String | toString() - Convert this Object to a human-readable String.
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clone , equals , extends Object> getClass , finalize , hashCode , notify , notifyAll , toString , wait , wait , wait |
GnuSecretKey
public GnuSecretKey(byte[] key,
int offset,
int length,
String algorithm)
Creates a new secret key from a portion of a byte array.
key
- The raw, secret key.offset
- The offset at which the key begins.length
- The number of bytes that comprise the key.algorithm
- The algorithm name, which can be null or empty.
GnuSecretKey
public GnuSecretKey(byte[] key,
String algorithm)
Creates a new secret key. The supplied byte array is copied by this
constructor.
key
- The raw, secret key.algorithm
- The algorithm name, which can be null or empty.
equals
public boolean equals(Object o)
Determine whether this Object is semantically equal
to another Object.
There are some fairly strict requirements on this
method which subclasses must follow:
- It must be transitive. If
a.equals(b)
and
b.equals(c)
, then a.equals(c)
must be true as well. - It must be symmetric.
a.equals(b)
and
b.equals(a)
must have the same value. - It must be reflexive.
a.equals(a)
must
always be true. - It must be consistent. Whichever value a.equals(b)
returns on the first invocation must be the value
returned on all later invocations.
a.equals(null)
must be false.- It must be consistent with hashCode(). That is,
a.equals(b)
must imply
a.hashCode() == b.hashCode()
.
The reverse is not true; two objects that are not
equal may have the same hashcode, but that has
the potential to harm hashing performance.
This is typically overridden to throw a
ClassCastException
if the argument is not comparable to the class performing
the comparison, but that is not a requirement. It is legal
for
a.equals(b)
to be true even though
a.getClass() != b.getClass()
. Also, it
is typical to never cause a
NullPointerException
.
In general, the Collections API (
java.util
) use the
equals
method rather than the
==
operator to compare objects. However,
IdentityHashMap
is an exception to this rule, for its own good reasons.
The default implementation returns
this == o
.
- equals in interface Object
- whether this Object is semantically equal to another
getEncoded
public byte[] getEncoded()
Returns the encoded key, which is merely the byte array this class was
created with. A reference to the internal byte array is returned, so the
caller can delete this key from memory by modifying the returned array.
- getEncoded in interface Key
toString
public String toString()
Convert this Object to a human-readable String.
There are no limits placed on how long this String
should be or what it should contain. We suggest you
make it as intuitive as possible to be able to place
it into
System.out.println()
and such.
It is typical, but not required, to ensure that this method
never completes abruptly with a
RuntimeException
.
This method will be called when performing string
concatenation with this object. If the result is
null
, string concatenation will instead
use
"null"
.
The default implementation returns
getClass().getName() + "@" +
Integer.toHexString(hashCode())
.
- toString in interface Object
- the String representing this Object, which may be null
GnuSecretKey.java --
Copyright (C) 2003, 2006 Free Software Foundation, Inc.
This file is a part of GNU Classpath.
GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at
your option) any later version.
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General Public License for more details.
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USA
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permission to link this library with independent modules to produce an
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