de.schlichtherle.truezip.crypto.param.AesKeyStrength Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of truezip-driver-zip Show documentation

The file system driver family for ZIP and related archive file types. Add the JAR artifact of this module to the run time class path to make its file system drivers available for service location in the client API modules.

There is a newer version: 7.7.10

Show newest version

/*
 * Copyright (C) 2005-2013 Schlichtherle IT Services.
 * All rights reserved. Use is subject to license terms.
 */
package de.schlichtherle.truezip.crypto.param;

import java.util.ResourceBundle;
import javax.annotation.concurrent.ThreadSafe;

/**
 * Enumerates the AES cipher key strenghts.
 * 
 * @author  Christian Schlichtherle
 */
@ThreadSafe
public enum AesKeyStrength implements KeyStrength {
    /** Enum identifier for a 128 bit AES cipher key. */
    BITS_128,

    /** Enum identifier for a 192 bit AES cipher key. */
    BITS_192,

    /** Enum identifier for a 256 bit AES cipher key. */
    BITS_256;

    private static final ResourceBundle resources
            = ResourceBundle.getBundle(AesKeyStrength.class.getName());

    /** Returns the key strength in bytes. */
    @Override
    public int getBytes() {
        return 16 + 8 * ordinal();
    }

    /** Returns the key strength in bits. */
    @Override
    public int getBits() {
        return 8 * getBytes();
    }

    @Override
    public String toString() {
        return resources.getString(name());
    }
}