November 2012
Intermediate to advanced
888 pages
54h 46m
Polish
Content preview from Ruby. Receptury
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15.9. Zapisywanie haseł użytkowników w bazie danych w postaci skrótów
Problem
W tabeli bazy danych zdefiniowanej w „15.8. Tworzenie systemu logowania” hasła użytkowników są zapisywane w postaci zwykłego tekstu. To z gruntu zły pomysł, bo jeżeli uda się komuś dostać do bazy danych, będzie miał dostęp do haseł wszystkich użytkowników. Najlepszym sposobem przechowywania haseł jest zapisanie ich w postaci bezpiecznego skrótu (hash). W ten sposób hasła nie są zapisywane de facto — zatem nikt nie może ich wykraść — natomiast można sprawdzić, czy logujący się użytkownik zna żądane hasło.
Rozwiązanie
Utwórzmy jeszcze raz tabelę users znaną z „15.8. Tworzenie systemu logowania”, w której zamiast pola password znajdzie się pole hashed_password ...
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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.