Autentificare pe baza de amprenta

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www.Hacking-Romania.com / Programe Securitate / Autentificare pe baza de "amprenta"

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Pagini: 1

harry2115
Moderator

Inregistrat: acum 16 ani
Postari: 385

*Pe baza de imagine, insa "amprenta" sunt mai bine.
Acesta e un cod PHP care permite autentificare pe un site web (admin panel & other shitz) folosind o imagine. Daca pixelii imaginii uploadate in acel moment corespund cu cei din baza de date, atunci se face autentificarea, altfel nu.
Folderul trebuie sa aiba chmod777 (deoarece imaginea se uploadeaza, i se preiau culorile pixelilor, apoi se sterge).
Nu este ceva extraordinar si iesit din comun, dar ma plictiseam aseara. Care ar fi avantajele ? In primul rand nu se poate ghici parola, deoarece la o imagine de 150x150 obtinem 22500 culori (8 caractere parca). Dezavantaje ? Nu stiu cat de fiabil este si partea care nu imi place mie este ca trebuie mereu uploadata imaginea.
Cod:

<?php
$hostname="localhost";
$username="username";
$password="password";
$database="db";

$conexiune=mysql_connect($hostname, $username, $password)
or die ("eroare !"

;

$bazadate=mysql_select_db($database, $conexiune)
or die ("eroare !"

;
?>

Acum trebuie uploadata imaginea pe server, eu mi-am ales-o pe urmatoarea:

Apoi cream tabela in BD:
Cod:

<?php
include ("conexiune.php"

;

$delete="DROP TABLE IF EXISTS tabela";
mysql_query($delete, $conexiune);

$table="CREATE TABLE tabela (
id int(3) NOT NULL AUTO_INCREMENT,
culoare int(200) NOT NULL ,
PRIMARY KEY (id)) TYPE=MyISAM";
if(mysql_query($table)){
echo "Tabelul a fost creat<br/>";
}
else{
echo "Tabelul nu a fost creat<br/>";
}

?>

Urmeaza culoare.php, fisier care poate fi sters dupa ce este rulat o singura data (acesta preia culoarea pixelilor si o baga in bd):
Cod:

<?php
include ("conexiune.php"

;
$im = imagecreatefromjpeg("imagine.jpg"

;
for($i=0; $i<150; $i++)
{
for($j=0; $j<150; $j++)
{
//Extragem culoarea si o introducem in BD
$rgb = imagecolorat($im, $i, $j);
$sql = "INSERT INTO tabela (culoare) VALUES ('".$rgb."')";
if(mysql_query($sql)) { echo "added"; }
else { mysql_error(); }
}
}

mysql_close($conexiune);
?>

Si partea finala... index.php:
Cod:

<FORM ENCTYPE="multipart/form-data" ACTION="" METHOD=POST>
Imagine: <INPUT NAME="file_up" TYPE="file">
<INPUT TYPE="submit" name="submit" VALUE="Upload">
</FORM>

<?php
include ("conexiune.php"

;

if($_POST['submit'])
{
$file_upload="true";
$file_up_size=$_FILES['file_up'][size];
if ($_FILES[file_up][size]>17000)
{
die("dimensiune prea mare"

;
$file_upload="false";
}
//Lasam doar jpg/jpeg
if (!($_FILES[file_up][type] =="image/jpeg"

)
{
die ("nu e jpg/jpeg"

;
$file_upload="false";
}
$file_name=$_FILES[file_up][name];
//Generam un nume pt. imagine
$x[0]=rand(0, 10);
$x[1]=rand(0, 10);
$x[2]=rand(0, 10);
$x[3]=rand(0, 10);
$x[4]=rand(0, 10);
$add="$x[0]$x[1]$x[2]$x[3]$x[4]$file_name";
if($file_upload=="true"

{
if (file_exists($add))
{
die ("Fisierul ales exista deja pe server."

;
}
else
{
if(move_uploaded_file ($_FILES[file_up][tmp_name], $add))
{
$link=$add;
$hand=imagecreatefromjpeg($add);
//Preluam dimensiunile
$x=imagesx($hand);
$y=imagesy($hand);
if ($x!= 150 || $y!=150)
{
unlink($link);
die ("dimensiunile nu corespund"

;
}
//Daca dimensiunile sunt cele bune...
else
{
$count=0;
for ($i=0; $i<150; $i++)
{
for ($j=0; $j<150; $j++)
{
$pixel[$count]=imagecolorat($hand, $i, $j);
$count++;
}
}
unlink($link);
$count=0;
$asd="true";
//Extragem din DB
$sql="SELECT * FROM tabela";
$sql=mysql_query($sql);
while($row=mysql_fetch_row($sql))
{
if ($pixel[$count]!=$row[1])
{
$asd="false";
}
$count++;
}
if ($asd=="false"

{ echo "parola gresita !"; }
else if($asd=="true"

{ echo "asta e parola!"; }
else { die("eroare !"

; }
}
} } } }
mysql_close($conexiune);
?>

Asta e tot.De mentionat ca nu merge pe IE, insa functioneaza pe Mozilla, Opera, Safari. Bafta !

_______________________________________
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[color=red]Putina rabdare,putina culoare....
Si ziua-i frumoasa ca ziua cu soare!!!![/color]

pus acum 16 ani