Encrypting passwords for a database using one-way hash technique (SHA1)
Before you save a password to a database, it may make sense to encrypt it. That way when you do some user authentication, you can compare the users submitted password to the one on the database.
URL: https://www.chrisjmendez.com/2007/10/21/ruby-encrypting-passwords-for-a-database-using-one-way-hash-technique-sha1/
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