md5passwordencrypter.java

一个很好的开源项目管理系统源代码

/*

 */
package net.java.workeffort.infrastructure.encrypt;

import org.apache.commons.codec.binary.Base64;
import org.apache.commons.codec.digest.DigestUtils;

/**
 * The password encrypter implementation using md5.
 * @author Antony Joseph
 */
public class Md5PasswordEncrypter implements IPasswordEncrypter {
    private static final String SALT = "-a1b2";

    /**
     * Encodes the password using md5 and returns a Base64 encoded string.
     * @param password The password to be encoded
     * @return The encoded password
     */
    public String encryptPassword(String password) {

        if (password == null)
            password = "";

        String passwordSaltStr = password + SALT;
        // encode to base64 (ASCII) so we can store in database
        byte[] encryptedPassword = Base64.encodeBase64(DigestUtils
                .md5(passwordSaltStr));

        //System.out.println("encryptedPassword = " + new
        // String(encryptedPassword));
        return new String(encryptedPassword);
    }

    public boolean isPasswordValid(String password, String encryptedPassword) {
        if (encryptedPassword == null)
            throw new IllegalArgumentException(
                    "encryptedPassword cannot be null");

        if (password == null)
            password = "";

        return encryptedPassword.equals(encryptPassword(password));
    }

}