The only supported ciphers are AES-128-CBC and AES-256-CBC with the correct key lengths. laravel 5.3

Question

I installed a new fresh copy of Laravel 5.3 using composer but I\'m getting this error:

The only supported ciphers are AES-128-CBC and AES-256-CBC wit

Answer 1

If you newly create a laravel project with command like composer create-project --prefer-dist laravel/laravel market and deploy the new repo to the application path with cp command you may get this issue.

I use laravel 5.4

roofe@www:~/market$ php artisan --version
Laravel Framework 5.4.33

When you create the laravel project, you can see the the logs that create the key like this:

Generating autoload files

Illuminate\Foundation\ComposerScripts::postUpdate php artisan optimize Generating optimized class loader The compiled services file has been removed. php artisan key:generate Application key [base64:exxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/k=] set successfully.

By default the key config in the config/app.php is as follows, it use AES-256-CBC and the generated key when creating the project is stored in the .env file. If you use command like cp -r ./* /var/www/market/ the .env file will not be moved to the application path.

/*
|--------------------------------------------------------------------------
| Encryption Key
|--------------------------------------------------------------------------
|
| This key is used by the Illuminate encrypter service and should be set
| to a random, 32 character string, otherwise these encrypted strings
| will not be safe. Please do this before deploying an application!
|
*/

'key' => env('APP_KEY'),

'cipher' => 'AES-256-CBC',

When I chage my deploy command to cp -r ./* ./.env /var/www/market/, this issue gone.

You also can refer to this github issue.

Answer 2

Check your .env file if APP_KEY is not set, it is the issue, Now run php artisan key:generate then run php artisan config:cache

it will set an APP_KEY key in your .env file.

If APP_KEY is already set run the same commands. It will update this key.

Answer 3

Just remove APP_KEY value from .env file and run this commands again :

php artisan key:generate
php artisan config:cache

Done.

Answer 4

Follow These Steps:

Step 1: Make sure you have .env file in your application.If not run this command cp .env.example .env

Step 2: Now run following command ( php artisan key:generate ) to generate a key and it will get saved in .env file automatically.

Step 3: Run php artisan config:cache if you want to cache the configurtration Or php artisan config:clear

Hopefully it will fix everything.

Answer 5

For laravel version 5.4 PHP 7.4

1. To solve run this command

php artisan key:generate

This will set a value for APP_KEY= in your .env file

something like this: APP_KEY=base64:trp5LQ9/TW85+17o0T7F0bZ/Ca1J9cIMgvyNIYl0k/g=

2. Clean cache to get everything working again with the following commands:

php artisan config:clear

then php artisan config:cache

Hope this helps.

Answer 6

Run php artisan key:generate.

Do php artisan config:clear,

Then php artisan config:cache

And things will start working!