EncryptUtil.java Source code

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Here is the source code for EncryptUtil.java

Source

/* Copyright c 2005-2012.
 * Licensed under GNU  LESSER General Public License, Version 3.
 * http://www.gnu.org/licenses
 */
//package org.beangle.security.codec;

import java.security.MessageDigest;

/**
 *  
 * @author chaostone
 */
public class EncryptUtil {
    //private final static Logger logger = LoggerFactory.getLogger(EncryptUtil.class);

    public static String encode(String password) {
        return encode(password, "MD5");
    }

    /**
     * Encode a string using algorithm specified in web.xml and return the
     * resulting encrypted password. If exception, the plain credentials string
     * is returned
     * 
     * @param password
     *            Password or other credentials to use in authenticating this
     *            username
     * @param algorithm
     *            Algorithm used to do the digest
     * @return encypted password based on the algorithm.
     */
    public static String encode(String password, String algorithm) {
        byte[] unencodedPassword = password.getBytes();

        MessageDigest md = null;

        try {
            // first create an instance, given the provider
            md = MessageDigest.getInstance(algorithm);
        } catch (Exception e) {
            //logger.error("Exception:{}", e);
            return password;
        }

        md.reset();

        // call the update method one or more times
        // (useful when you don't know the size of your data, eg. stream)
        md.update(unencodedPassword);

        // now calculate the hash
        byte[] encodedPassword = md.digest();

        StringBuilder buf = new StringBuilder();

        for (int i = 0; i < encodedPassword.length; i++) {
            if ((encodedPassword[i] & 0xff) < 0x10) {
                buf.append("0");
            }

            buf.append(Long.toString(encodedPassword[i] & 0xff, 16));
        }

        return buf.toString();
    }
}