##language:zh
'''
含有章节索引的中文 文章模板
'''

-- hd [<<DateTime(2004-08-10T04:59:36Z)>>]
<<TableOfContents>>
= UnixMD5技巧 =
有很多情况下我们需要通过最简单的办法来使用一小段程序运算出Unix的密码MD5后的字符串出来。这个Tips将我们所知道的各种简单办法列出来，希望对大家有所帮助。

== PHP ==
{{{
<?php
$MyPassword = "pass";
echo crypt($MyPassword);
?>
}}}

== Perl ==
{{{
perl -e 'print crypt("passwd","\$1\$randstr\$"),"\n"'
}}}

== Python ==
{{{
pw=pass
python -c "import crypt;print crypt.crypt('"$pw"','py')"
}}}

== C++ ==
{{{
/*
 * Copyright (c) Xin LI, 2004
 * Copyright (c) Sina Mobile Corporation, 2004
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $Phantasm$
 */

#include <iostream>
#include <cstdlib>
#include <string>
using namespace std;

#include <unistd.h>

int main()
{
        char *p = NULL;
        char salt[] = "$1$12345678";
        const char saltpattern[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz_";
        string s;
        cout << "Password: ";
        cin >> s;
        srand(123);
        for(int i=3; i<11; i++)
                salt[i] = saltpattern[rand() % ((sizeof saltpattern) -1)];
        p = crypt(s.c_str(), salt);
        if(p!=NULL) {
                cout << "Hash: " << p;
        } else
                cout << "Error: Can't allocate memory!";
        cout << endl;
        return (0);
}
}}}
这个只是for FreeBSD 5。使用下面的命令进行编译后运行：
{{{
c++ -o maildb -O -pipe maildb.cpp -lcrypt
}}}