.. highlightlang:: us

.. index:: md5

.. _md5:

md5
===

.. us.tag  md5 NOTREADYENGLISH STR New421 Changed500

:ref:`md5` calculates the MD5 check sum using the algorithm
http://www.faqs.org/rfcs/rfc1321.html, MD5 Message-Digest Algorithm (RFC 1321).

.. function::  ssMD5 = md5(ssString)

.. us.return

**Return Value**

*ssMD5* is a string with a hexadecimal value (32 characters).

.. us.params

**Parameters**

.. uparam:: ssString

   *ssString* is a scalar string, which may contain 0-characters.

.. us.example

**Example**

MD5 of a matrix::

   tic(); 
   a = ones(20000, 3);
   s = mem_alloc(60000*8); 
   mem_set(s, 1, a, "double"); 
   ssMD5 = md5(s); 
   toc();

.. us.history

**History**

.. list-table::
   :header-rows: 1

   * - Version
     - Description
   * - 5.0.0
     - Unicode
   * - 4.2.1
     - New

.. seealso::
   :ref:`overview-strings`,
   :ref:`md5_file`

:sub:`id-791842`