How do I update my security in my login script from MD5 to something more secure?

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Answers


Short answer

Use bcrypt not md5 or sha1

Longer answer

Using the crypt() is hard. There is a new PHP password hashing API coming in PHP version 5.5, you can read about it here:

https://gist.github.com/nikic/3707231

It uses bcrypt and makes the whole process very easy. Of course php 5.5 isn't ready yet, so in the meantime there is a library to provide this new API right now:

https://github.com/ircmaxell/password_compat

Edit: See this thread for a much more thorough answer on the topic:

How do you use bcrypt for hashing passwords in PHP?


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