Learn how to keep passwords secret. You learn how to use BCrypt, a hashing algorithm that converts a password to a fixed length, string of characters. Hashing lets you store a password in a database so that, even if the database is accessed, hackers won't be able to figure out the real password and log into your site.
- Hashing — using a function which takes some piece of information and return a hash that represents that information
- Salt — randomly generated string that is concatenated with a password
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