June 2005
Intermediate to advanced
794 pages
18h 27m
German
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17.5 Überprüfung der Passwortsicherheit
Problem
Sie möchten sicherstellen, dass die Benutzer schwer zu erratende Passwörter auswählen.
Lösung
Überprüfen Sie die Passwortauswahl eines Benutzers mit der Funktion pc_passwordcheck( ), die in Beispiel 17-1 unten erklärt wird. Ein Beispiel:
if ($err = pc_passwordcheck($_REQUEST['benutzername'],$_REQUEST['passwort])) {
print "Ungeeignetes Passwort: $err";
// Lassen Sie den Benutzer ein anderes Passwort auswählen.
}Diskussion
Die in Beispiel 17-1 verwendete Funktion pc_passwordcheck( ) führt ein paar Tests an den von den Benutzern eingegebenen Passwörtern durch, um sicherzustellen, dass sie schwerer zu knacken sind. Falls das Passwort die Kriterien nicht erfüllt, gibt die Funktion einen String zurück, der ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.