Check if wep Key is a valid hexadecimal string. - Android Network

Android examples for Network:WEP

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Description

Check if wep Key is a valid hexadecimal string.

Demo Code

/*/*w  w  w .  j a  v  a2 s .co m*/
 * Copyright (C) 2010 ZXing authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
//package com.java2s;
import java.util.regex.Pattern;

public class Main {
    private static final Pattern HEX_DIGITS = Pattern
            .compile("[0-9A-Fa-f]+");

    /**
     * Check if wepKey is a valid hexadecimal string.
     * @param wepKey the input to be checked
     * @return true if the input string is indeed hex or empty.  False if the input string is non-hex
     * or null.
     */
    static boolean isHexWepKey(CharSequence wepKey) {
        if (wepKey == null) {
            return false;
        }
        int length = wepKey.length();
        // WEP-40, WEP-104, and some vendors using 256-bit WEP (WEP-232?)
        return (length == 10 || length == 26 || length == 58)
                && HEX_DIGITS.matcher(wepKey).matches();
    }
}

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