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gnu.javax.crypto.key.srp6

Class SRPKey

Implemented Interfaces:
Key, Serializable
Known Direct Subclasses:
SRPPrivateKey, SRPPublicKey
public abstract class SRPKey
extends Object
implements Key, Serializable
An abstract representation of a base SRP ephemeral key.

This object encapsulates the two numbers:

Note that in SRP, all arithmetic is done modulo N.

Reference:

  1. SRP Protocol Design
    Thomas J. Wu.
See Also:
Serialized Form

Field Summary

protected BigInteger
N
The public, Germaine prime, shared modulus.
protected BigInteger
g
The generator.

Fields inherited from interface java.security.Key

serialVersionUID

Constructor Summary

SRPKey(BigInteger N, BigInteger g)

Method Summary

boolean
equals(Object obj)
Returns true if the designated object is an instance of SRPKey and has the same SRP parameter values as this one.
String
getAlgorithm()
Returns the standard algorithm name for this key.
byte[]
getEncoded()
Deprecated. see getEncoded(int).
abstract byte[]
getEncoded(int format)
String
getFormat()
Returns Registry.RAW_ENCODING_SHORT_NAME which is the sole format supported for this type of keys.
BigInteger
getG()
Returns the generator.
BigInteger
getN()
Returns the public shared modulus.

Methods inherited from class java.lang.Object

clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

N

protected final BigInteger N
The public, Germaine prime, shared modulus.

g

protected final BigInteger g
The generator.

Constructor Details

SRPKey

protected SRPKey(BigInteger N,
                 BigInteger g)

Method Details

equals

public boolean equals(Object obj)
Returns true if the designated object is an instance of SRPKey and has the same SRP parameter values as this one.
Overrides:
equals in interface Object
Parameters:
obj - the other non-null SRP key to compare to.
Returns:
true if the designated object is of the same type and value as this one.

getAlgorithm

public String getAlgorithm()
Returns the standard algorithm name for this key.
Specified by:
getAlgorithm in interface Key
Returns:
the standard algorithm name for this key.

getEncoded

public byte[] getEncoded()

Deprecated. see getEncoded(int).

Specified by:
getEncoded in interface Key

getEncoded

public abstract byte[] getEncoded(int format)

getFormat

public String getFormat()
Returns Registry.RAW_ENCODING_SHORT_NAME which is the sole format supported for this type of keys.
Specified by:
getFormat in interface Key
Returns:
Registry.RAW_ENCODING_SHORT_NAME ALWAYS.

getG

public BigInteger getG()
Returns the generator.
Returns:
g.

getN

public BigInteger getN()
Returns the public shared modulus.
Returns:
N.
SRPKey.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. GNU Classpath is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.

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