001    /*
002     * Copyright (c) 2000 - 2006 The Legion Of The Bouncy Castle (http://www.bouncycastle.org)
003     * 
004     * Permission is hereby granted, free of charge, to any person obtaining a copy of this
005     * software and associated documentation files (the "Software"), to deal in the Software
006     * without restriction, including without limitation the rights to use, copy, modify,
007     * merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
008     * permit persons to whom the Software is furnished to do so, subject to the following
009     * conditions:
010     * 
011     * The above copyright notice and this permission notice shall be included in all copies
012     * or substantial portions of the Software.
013     * 
014     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
015     * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
016     * PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
017     * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
018     * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
019     * DEALINGS IN THE SOFTWARE.
020     * 
021     */
022    
023    package org.apache.directory.shared.asn1.der;
024    
025    
026    import java.math.BigInteger;
027    
028    
029    /**
030     * DER Integer object.
031     */
032    public class DERInteger extends DERObject
033    {
034        /**
035         * Basic DERObject constructor.
036         */
037        DERInteger(byte[] value)
038        {
039            super( INTEGER, value );
040        }
041    
042    
043        /**
044         * Static factory method, type-conversion operator.
045         */
046        public static DERInteger valueOf( int integer )
047        {
048            return new DERInteger( intToOctet( integer ) );
049        }
050    
051    
052        /**
053         * Lazy accessor
054         * 
055         * @return integer value
056         */
057        public int intValue()
058        {
059            return octetToInt( value );
060        }
061    
062    
063        /**
064         * Lazy accessor
065         * 
066         * @return BigInteger value
067         */
068        public BigInteger bigIntValue() 
069        {
070            return new BigInteger( value );
071        }
072        
073        
074        private static int octetToInt( byte[] bytes )
075        {
076            return new BigInteger( bytes ).intValue();
077        }
078    
079    
080        private static byte[] intToOctet( int integer )
081        {
082            return BigInteger.valueOf( integer ).toByteArray();
083        }
084    }