NeoEGM.com » Random https://www.neoegm.com Knowledge is inside Mon, 08 Jul 2024 05:38:01 +0000 en-US hourly 1 https://wordpress.org/?v=4.2.39 PHP random password generator https://www.neoegm.com/tech/online-tools/php-random-password-generator/ https://www.neoegm.com/tech/online-tools/php-random-password-generator/#comments Thu, 23 Jul 2009 08:10:31 +0000 http://www.neoegm.com/?p=317 Related posts:
  1. Random password generator
  2. Excel random password generator
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]]> As a new sequel to the Excel random password generator and the Random password generator, I’ve made a PHP random password generator service…

You can call it this way (if you hover the parameter values, you’ll get an explanation):

http://www.neoegm.com/services/random_password.php?length=8&upper=1&lower=1&numbers=1

So, for example, to generate a 10 characters numeric password you could access:

http://www.neoegm.com/services/random_password.php?length=10&upper=0&lower=0


That’s all, now the code for the ones who want to use it on their own sites (read below for license)…



GNU GPL v3The code is licensed under the GNU GPL v3…



Anyway, here is the code so you can watch it without having to download the PHP file:

function make_seed()	//Function make_seed from http://www.php.net/manual/en/function.srand.php
{
  list($usec, $sec) = explode(' ', microtime());
  return (float) $sec + ((float) $usec * 100000);
}

function RandomPassword($length, $upper = true, $numbers = true, $lower = true)
{
	if (!$upper && !$lower && !$numbers)
		return "";

	$ret = "";

	$chars = 26 * 2 + 10;	//26 (a-z) + 26 (A-Z) + 10 (0-9)
		//a-z = 97-122
		//A-Z = 65-90
		//0-9 = 48-57
		
	srand(make_seed());		//Seed with microseconds
							//if you don't need this, you can just use srand(time());

	for ($i = 1; $i <= $length; $i++)
	{
		$repeat = false;

		$num = floor(rand(0, $chars-1));

		if ($num < 26)
			if ($lower)
				$ret .= chr($num + 97);
			else
				$repeat = true;
		else if ($num < 52)
			if ($upper)
				$ret .= chr($num - 26 + 65);
			else
				$repeat = true;
		else if ($num < 62)
			if ($numbers)
				$ret .= chr($num - 52 + 48);
			else
				$repeat = true;

		if ($repeat)
			$i--;
	}

	return $ret;
}

And this is the code needed to make it a web service:

$length = isset($_REQUEST['length'])?$_REQUEST['length']:8;
$upper = isset($_REQUEST['upper'])?$_REQUEST['upper']:true;
$numbers = isset($_REQUEST['numbers'])?$_REQUEST['numbers']:true;
$lower = isset($_REQUEST['lower'])?$_REQUEST['lower']:true;

if ($length < 1 || $length > 128)
	$length = 8;

if (!($upper == false || $upper == 0))
	$upper = true;

if (!($numbers == false || $numbers == 0))
	$numbers = true;
	
if (!($lower == false || $lower == 0))
	$lower = true;

echo RandomPassword($length, $upper, $numbers, $lower);

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]]> https://www.neoegm.com/tech/online-tools/php-random-password-generator/feed/ 0 Random password generator https://www.neoegm.com/tech/online-tools/random-password-generator/ https://www.neoegm.com/tech/online-tools/random-password-generator/#comments Thu, 23 Jul 2009 01:41:49 +0000 http://www.neoegm.com/uncategorized/random-password-generatorgenerador-de-contrasenas-aleatorias/ Related posts:
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]]> As an easy and quick to use alternative to the Excel random password generator, I’ve made this online Javascript adaptation of the random password generation function code… You can watch its source code below…

Characters


Uppercase Lowercase Numbers

Random Password


GNU GPL v3The code is licensed under the GNU GPL v3…



Just in case you want to see the function code without looking into the source code:

/*************************************************************************************************
Random Password Generator by NeoEGM

Copyright (C) 2009 Ezequiel Gastón Miravalles

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*************************************************************************************************/

/*************************************************************************************************
Software: Random Password Generator by NeoEGM
Author: Ezequiel Gastón Miravalles
Website: http://www.neoegm.com/software/random-password-generator/
License: GNU GPL v3 (read above)
*************************************************************************************************/

function RandomPassword(Length, Upper, Numbers, Lower)
{
	Upper = typeof(Upper) != 'undefined' ? Upper : true;
	Numbers = typeof(Numbers) != 'undefined' ? Numbers : true;
	Lower = typeof(Lower) != 'undefined' ? Lower : true;
	
    if (!Upper && !Lower && !Numbers)
		return "";

    var Ret = "";
    var Num;
    var Repeat;

    Chars = 26 * 2 + 10;	//26 (a-z) + 26 (A-Z) + 10 (0-9)
	//a-z = 97-122
	//A-Z = 65-90
	//0-9 = 48-57

    for (i = 1; i <= Length; i++)
	{
        Repeat = false;

        Num = Math.floor(Math.random()*Chars);

        if (Num < 26)
            if (Lower)
                Ret = Ret + String.fromCharCode(Num + 97);
            else
                Repeat = true;
        else if (Num < 52)
            if (Upper)
                Ret = Ret + String.fromCharCode(Num - 26 + 65);
            else
                Repeat = true;
        else if (Num < 62)
            if (Numbers)
                Ret = Ret + String.fromCharCode(Num - 52 + 48);
            else
                Repeat = true;

        if (Repeat)
            i--;
	}

    return Ret;
}

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]]> https://www.neoegm.com/tech/online-tools/random-password-generator/feed/ 0 Excel random password generator https://www.neoegm.com/tech/software/excel-add-ins/excel-random-password-generator/ https://www.neoegm.com/tech/software/excel-add-ins/excel-random-password-generator/#comments Wed, 22 Jul 2009 17:42:22 +0000 http://www.neoegm.com/?p=231 Related posts:
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]]> Sometimes you may have to generate automatically different random passwords. This could be a very easy task if you just had an Excel function like “RandomPassword”, so you could write:

=RandomPassword(8)

And get something like:

e8NwB9Bi

Well, this is exactly the idea of the Add-In I’ve made…

Random Password

If this isn’t what you’re looking for, as an alternative, you can visit the online random password generator.

The function syntax is as follows:

=RandomPassword(length, [uppercase = TRUE], [numbers = TRUE],
[lowercase = TRUE])

Just as simple as that… Here are the download links:

If you don’t know how you should install an Excel Add-in, keep looking into the site since I’ll write a post about that soon… By now, I can give you this guidelines:

1- Copy the corresponding version of the add-in (XLA or XLAM) to C:\Program Files\Microsoft Office\OfficeXX\Library (where XX is the Office version, being 12 for Office 2007)
2- Follow the instructions given here for Office 2003 or below, or take a look at the first part of this steps for Office 2007.



GNU GPL v3The code is licensed under the GNU GPL v3…



Just in case you want to see the function code without looking into the add-in:

Function RandomPassword(Length As Integer, Optional Upper As Boolean = True, Optional Number As Boolean = True, Optional Lower As Boolean = True)
    If Not Upper And Not Lower And Not Number Then
        RandomPassword = "";
        Exit Function
    End If

    Dim Ret As String
    Dim Num As Integer
    Dim Repeat As Boolean

    Randomize

    Chars = 26 * 2 + 10 '26 (a-z) + 26 (A-Z) + 10 (0-9)
        'a-z = 97-122
        'A-Z = 65-90
        '0-9 = 48-57

    For i = 1 To Length
        Repeat = False

        Num = Int(Chars * Rnd) 'Int((upperbound - lowerbound + 1) * Rnd + lowerbound)

        If Num &amp;lt; 26 Then        'a-z
            If Lower Then
                Ret = Ret & Chr(Num + 97)
            Else
                Repeat = True
            End If
        ElseIf Num < 52 Then    'A-Z
            If Upper Then
                Ret = Ret & Chr(Num - 26 + 65)
            Else
                Repeat = True
            End If
        ElseIf Num < 62 Then    '0-9
            If Number Then
                Ret = Ret & Chr(Num - 52 + 48)
            Else
                Repeat = True
            End If
        End If

        If Repeat Then
            i = i - 1
        End If
    Next i

    RandomPassword = Ret
End Function

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