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PO
 

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    <p>If you would be able to "decode" those passwords, it wouldn't be a very safe system. Once someone gained access to your database - they would be able to gain access to every ones passwords without them knowing...</p> <p>If you have ever forgotten a password for a site (and we all have - don't deny it!), you'll recall that they usually* <strong>don't</strong> simply send you your password (in plain text) as a reminder to your email - they'll give you the opportunity to <strong>reset</strong> it. This way (verifying usually through your email/phone number) they'll know that you are indeed the person who opened the account.</p> <p><em>* If they send you your password in plain text that probably means they are storing it like that or in some other easily decrypted form. This site is most likely not as secure as they would like to think...</em></p> <hr> <p>If you are interested in leaving yourself a "backdoor" of sorts to be able to access any of your users accounts, what you might think of doing is having a special login form from inside your administrator account, that allows you to use the encoded password to log in. That means that you simply leave out the <code>hash('sha256', $password)</code> and pass the <code>$password</code> already encoded (which you extract from your database). It's a bit hacky, and if you already have an administrator account then there wouldn't be much use to be able to log in as a different user because you are already <strong>all powerful!</strong></p>
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    1. POActual password visualisation in SQL table when using sha256
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    1. COJust to tack on a little detail - you probably want to use a stronger hashing algorithm than SHA256 these days. Current popular opinion is that bcrypt() is the way to go.
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    2. COIt all depends on your application really. For a simple low risk non-sensitive type of system, simply adding some salt on the end of a string might suffice. Better safe than sorry though... What's that you were saying about `<Ctrl+T> wiki bcrypt`...
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    3. COthanks, totally understand now.
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