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Problem :

I am in a process of upgrading my codeigniter from the 1.7.2 to 2.0.1.

Everything seems to have gone as expected except I get below error:

“In order to use the Session class you are required to set an encryption key in your config file.”

What is a change in 2.0.0/2.0.1 that has caused above error?

What change should I do to fix the above error.

Will making the said change break anything for me?

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1 Answer

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Solution:

The reason they are asking you for an encryption key is for security (obviously)

Note: Even if you are not using the encrypted sessions, still you must set the encryption key in the config file which should be used to aid in preventing your session data manipulation. -

This modification will not break your code. But be very careful when updating it from 1.7.2 to 2.0.1. I suggest you must backup your code before updating it.

They have added a security improvement with a 2.0.0 version of the CI. I don't know why they did not talk about it in their upgrade guide though.

OR

If you use a Encryption class or a Session class then you MUST set the encryption key. Please see a user guide for info on it.

$config['encryption_key'] = '02527-269-2503946-70386-34730519'; 
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