<?xml version="1.0" encoding="UTF-8"?>
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 * Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
 * Copyright (C) 2020 - Stéphane MOTTELET
 *
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 * For more information, see the COPYING file which you should have received
 * along with this program.
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<refentry xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:svg="http://www.w3.org/2000/svg" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:db="http://docbook.org/ns/docbook" xmlns:scilab="http://www.scilab.org" xml:lang="en" xml:id="hash">
    <refnamediv>
        <refname>hash</refname>
        <refpurpose>get checksum of file or string using various digest algorithms</refpurpose>
    </refnamediv>
    <refsynopsisdiv>
        <title>Syntax</title>
        <synopsis>res = hash(fd, algorithm)
            res = hash(string, algorithm)
        </synopsis>
    </refsynopsisdiv>
    <refsection>
        <title>Arguments</title>
        <variablelist>
            <varlistentry>
                <term>res</term>
                <listitem>
                    <para>hash result (a string)</para>
                </listitem>
            </varlistentry>
            <varlistentry>
                <term>fd</term>
                <listitem>
                    <para>a matrix of file descriptors returned by the function mopen.</para>
                </listitem>
            </varlistentry>
            <varlistentry>
                <term>string</term>
                <listitem>
                    <para>a string or a matrix of strings</para>
                </listitem>
            </varlistentry>
            <varlistentry>
                <term>algorithm</term>
                <listitem>
                    <para>a string (the hashing algorithm)</para>
                </listitem>
            </varlistentry>
        </variablelist>
    </refsection>
    <refsection>
        <title>Description</title>
        <para>
            <function>hash</function> get the checksum of a file or a string using the hashing function <term>algorithm</term>. The available functions are:
        </para>
        <para>
        <informaltable border="1">
               <tbody>
                 <tr>
                     <td>'crc32'</td><td>crc32 chechsum</td>
                 </tr>
                 <tr>
                     <td>'md5'</td><td>Message-Digest Algorithm 5</td>
                 </tr>
                <tr>
                    <td>'sha1'</td><td>Secure Hash Algorithm 1 (160 bits)</td>
                </tr>
                <tr>
                    <td>'sha2', 'sha256'</td><td>Secure Hash Algorithm 2 (256 bits)</td>
                </tr>
                <tr>
                    <td>'sha3-224'</td><td>Secure Hash Algorithm 3 (224 bits)</td>
                </tr>
                <tr>
                    <td>'sha3-256'</td><td>Secure Hash Algorithm 3 (256 bits)</td>
                </tr>
                <tr>
                    <td>'sha3-384'</td><td>Secure Hash Algorithm 3 (384 bits)</td>
                </tr>
                <tr>
                    <td>'sha3-512'</td><td>Secure Hash Algorithm 3 (512 bits)</td>
                </tr>
            </tbody>
        </informaltable>
    </para>
    </refsection>
    <refsection>
        <title>Examples</title>
        <programlisting role="example"><![CDATA[
hash('hello world', 'md5')
hash('hello world', 'sha256')
hash(['hello';'world'], 'sha3-256')

fp = mopen(SCI+'/modules/core/etc/core.start')
hash(fp ,'sha256')
mclose(fp)
 ]]></programlisting>
    </refsection>
      <refsection>
        <title>History</title>
        <revhistory>
            <revision>
                <revnumber>6.1.1</revnumber>
                <revremark>hash() introduced.</revremark>
            </revision>
        </revhistory>
    </refsection>
</refentry>
