Android Key Create createDESedeKeySpec(SecretKey key)

Description

Creates an encoded DESedeKeySpec from a SecretKey

License

Open Source License

Parameter

Parameter	Description
key	a parameter

Exception

Parameter	Description
NoSuchAlgorithmException	an exception
InvalidKeySpecException	an exception

Declaration

public static byte[] createDESedeKeySpec(SecretKey key)
        throws NoSuchAlgorithmException, InvalidKeySpecException 

Method Source Code

//package com.java2s;
/*//from  w  w w. ja  va 2s . co m
 * Copyright (c) 2001-2007 Sun Microsystems, Inc.  All rights reserved.
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 *  3. The end-user documentation included with the redistribution, if any, must 
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 *     developed by Sun Microsystems, Inc. for JXTA(TM) technology." 
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 *  4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" must 
 *     not be used to endorse or promote products derived from this software 
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 *  5. Products derived from this software may not be called "JXTA", nor may 
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 *  This license is based on the BSD license adopted by the Apache Foundation. 
 */

import java.security.NoSuchAlgorithmException;

import java.security.spec.InvalidKeySpecException;

import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESedeKeySpec;

public class Main {
    /**
     * Creates an encoded DESedeKeySpec from a SecretKey
     * 
     * @param key
     * @return
     * @throws NoSuchAlgorithmException
     * @throws InvalidKeySpecException
     */
    public static byte[] createDESedeKeySpec(SecretKey key)
            throws NoSuchAlgorithmException, InvalidKeySpecException {
        SecretKeyFactory keyfactory = SecretKeyFactory
                .getInstance("DESede");
        DESedeKeySpec keyspec = (DESedeKeySpec) keyfactory.getKeySpec(key,
                DESedeKeySpec.class);
        return keyspec.getKey();
    }
}

Related

1. generateKey(char[] passphraseOrPin, byte[] salt)
2. generateMacSecret()
3. getKey(String keyRule)
4. getKeyFromPassphrase(String passphrase, byte[] salt)
5. getKeyFromPassphrase(String passphrase, byte[] salt, int iterations)
6. createSecretKey(byte[] rawkey)
7. generatePBEKey(char[] password, byte[] salt, String algorthm, int iterations, int keyLength)
8. generateSymmetricKey()
9. getCipherFromPassphrase(String passphrase, byte[] salt, int iterations, int opMode)