Android开发之MD5加密

将字符串进行MD5加密，返回加密后的字符串

 public static String encode(String password) {
         try {
             StringBuffer sb = new StringBuffer();
             MessageDigest instance = MessageDigest.getInstance("MD5");
             byte[] digest = instance.digest(password.getBytes());
             for (byte b : digest) {
                 int i = b & 0xff; // 获取到第八位有效值，加盐处理
                 String hexString = Integer.toHexString(i);
                 if (hexString.length() < 2) {
                     hexString = "0" + hexString;
                 }
                 sb.append(hexString);
             }
             return sb.toString();
         } catch (NoSuchAlgorithmException e) {
             e.printStackTrace();
             return "";
         }
     }

在线测试：http://www.cmd5.com/

参考：http://www.tuicool.com/articles/Q7RNJbu