gurux.dlms.MBusEncryptionMode Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of gurux.dlms Show documentation

gurux.dlms.java package is used to communicate with DLMS devices.

There is a newer version: 4.0.72

//
// --------------------------------------------------------------------------
//  Gurux Ltd

package gurux.dlms;

import java.util.HashMap;

/**
 * Encryption modes.
 */
public enum MBusEncryptionMode {
    /**
     * Encryption is not used.
     */
    NONE(0),
    /**
     * AES with Counter Mode (CTR) noPadding and IV.
     */
    AES_128(1),
    /**
     * DES with Cipher Block Chaining Mode (CBC).
     */
    DES_CBC(2),
    /**
     * DES with Cipher Block Chaining Mode (CBC) and Initial Vector.
     */
    DES_CBC_IV(3),
    /**
     * AES with Cipher Block Chaining Mode (CBC) and Initial Vector.
     */
    AES_CBC_IV(5),
    /**
     * AES 128 with Cipher Block Chaining Mode (CBC) and dynamic key and Initial
     * Vector with 0.
     */
    AES_CBC_IV0(7),
    /**
     * TLS
     */
    Tls(13);

    /**
     * Integer value of enumerator.
     */
    private int intValue;
    /**
     * Collection of enumerator values.
     */
    private static java.util.HashMap mappings;

    /**
     * Returns collection of enumerator values.
     * 
     * @return Enumerator values.
     */
    private static HashMap getMappings() {
        if (mappings == null) {
            synchronized (MBusEncryptionMode.class) {
                if (mappings == null) {
                    mappings = new HashMap();
                }
            }
        }
        return mappings;
    }

    /**
     * Constructor.
     * 
     * @param value
     *            Integer value of enumerator.
     */
    MBusEncryptionMode(final int value) {
        intValue = value;
        getMappings().put(value, this);
    }

    /**
     * Get integer value for enumerator.
     * 
     * @return Enumerator integer value.
     */
    public int getValue() {
        return intValue;
    }

    /**
     * Returns enumerator value from an integer value.
     * 
     * @param value
     *            Integer value.
     * @return Enumeration value.
     */
    public static MBusEncryptionMode forValue(final int value) {
        MBusEncryptionMode ret = getMappings().get(value);
        if (ret == null) {
            throw new IllegalArgumentException(
                    "Invalid MBus encryption mode enum value.");
        }
        return ret;
    }
}