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Stripecube is an open source Java framework for Web Applications

There is a newer version: 1.30

package com.clickntap.utils;

import ch.ethz.ssh2.crypto.Base64;
import com.clickntap.tool.types.Datetime;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class WebUtils {

    public static final String KEY = "6oRfpzs/qLDRlYAwSmYpvg==";

    public static String getClientData(HttpServletRequest request, String key) {
        Cookie[] cookies = request.getCookies();
        for (int i = 0; cookies != null && i < cookies.length; i++) {
            Cookie cookie = cookies[i];
            if (cookie.getName().equals(key))
                return WebUtils.decryptClientData(cookie.getValue());
        }
        return null;
    }

    public static void setClientData(HttpServletResponse response, String key, String value) {
        value = WebUtils.encryptClientData(value);
        Cookie cookie = new Cookie(key, value);
        cookie.setPath(ConstUtils.SLASH);
        cookie.setMaxAge(Datetime.ONEYEARINSECONDS);
        response.addCookie(cookie);
    }

    public static String encryptClientData(String value) {
        try {
            // byte[] data =
            // SecurityUtils.encrypt(value.getBytes(ConstUtils.UTF_8),
            // Base64.decode(KEY.toCharArray()));
            // return new String(Base64.encode(data));
            return value;
        } catch (Exception e) {
            return null;
        }
    }

    public static String decryptClientData(String value) {
        try {
            // byte[] data = Base64.decode(value.toCharArray());
            // data = SecurityUtils.decrypt(data,
            // Base64.decode(KEY.toCharArray()));
            // return new String(data, ConstUtils.UTF_8);
            return value;
        } catch (Exception e) {
            return null;
        }
    }

    public static void main(String args[]) {
        try {
            System.out.println(Base64.encode(SecurityUtils.generateKey(128).getEncoded()));
        } catch (Exception e) {
            e.printStackTrace();
        }
        ;
        String key = "--test--";
        String cryptedKey = WebUtils.encryptClientData(key);
        System.out.println("cryptedKey:" + cryptedKey);
        System.out.println("key:" + WebUtils.decryptClientData(cryptedKey));
    }
}