Flask Sesshion Secret_key Generator

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Oct 03, 2018  To ensure that your session information is secure, a strong, cryptographically secure secret key is needed. That secret key cannot be hard coded in your source code and that is for two reasons. Since your Qradar App will be installed many different times, each installation needs a different secret key. Beyond that, it’s best practice. Jul 05, 2016  I'm following the flask mega tutorial and I don't understand why the SECRETKEY in the config.py module (Part III: web forms) is exposed. I know this is a beginner tutorial and security isn't the emphasis, but the email username and passwords are stored. Protect this string with your life: anybody who gets their hands on your app's secret key has the power to potentially unencrypted all user passwords in your application. In an ideal world, even you shouldn't know your key. Seriously: having your secret key compromised is the equivalent of feeding gremlins after midnight. Initializing Flask-Login. Jul 12, 2014 In Part 11 of this series on Flask, we'll look at how to generate a random string for our app's secret key. Code - https://github.com/realpython/flask-intro.

If app.secret_key is not set, the Flask framework will not allow you to set or access the session dictionary. This is all that the flask user guide has to say on the subject.

I am very new to web development and I have no idea how/why any security stuff works. I would like to understand what flask is doing under the hood.
Why does flask force us to set this secret_key property? How does flask use the secret_key property?

Answers:

Anything that requires encryption (for safe-keeping against tampering by attackers) requires the secret key to be set. For just Flask itself, that ‘anything’ is the Session object, but other extensions can make use of the same secret.

secret_key is merely the value set for the SECRET_KEY configuration key, or you can set it directly.

The Sessions section in the Quickstart has good, sane advice on what kind of server-side secret you should set.

Encryption relies on secrets; if you didn’t set a server-side secret for the encryption to use, everyone would be able to break your encryption; it’s like the password to your computer. The secret plus the data-to-sign are used to create a signature string, a hard-to-recreate value using a cryptographic hashing algorithm; only if you have the exact same secret and the original data can you recreate this value, letting Flask detect if anything has been altered without permission. Since the secret is never included with data Flask sends to the client, a client cannot tamper with session data and hope to produce a new, valid signature.

Flask uses the itsdangerous library to do all the hard work; sessions use the itsdangerous.URLSafeTimedSerializer class with a customized JSON serializer.

Tags: flask

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    Flask Session Secret_key Generator 2017

    Comments

    commented May 25, 2010

    Documentation should contain some infos about how to generate secret keys.

    commented May 26, 2010

    Document ways to generate secret keys. This closed by 1264c45.

    pushed a commit that referenced this issue Apr 17, 2011
    This issue was closed.

    Flask Sessions

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