问题
I installed a new fresh copy of laravel 5.3 using composer but I keep getting this error:
The only supported ciphers are AES-128-CBC and AES-256-CBC with the correct key lengths. Even though my app.php file in config directory specify
'cipher' => 'AES-128-CBC',
回答1:
You need to have .env on your appication folder then run:
$ php artisan key:generate
If you don't have .env copy from .env.example:
$ cp .env.example .env
回答2:
Run this commands on your terminal:
php artisan config:clear
then
php artisan config:cache
回答3:
Run php artisan key:generate.
Do php artisan config:clear,
Then php artisan config:cache
And things will start working!
回答4:
If you are running a Laravel project for the first time in that machine make sure you have the necessary requirements. Open your CMD/Terminal in your project directory or
cd to/your/project/dir
Give this command again:
composer update
Change your .env.example to .env and make necessary changes in that file especially database configurations to avoid db error.
Then
php artisan key:generate
This solves this AES cipher key length problem every time I create a Laravel project or clone it from git.
回答5:
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.
回答6:
Ok, this has basically already been answered, but I found a couple caveats that had be consternated, or constipated, one of those two...
First, as has already been said, you should ensure you have a valid .env file which you can accomplish in the terminal by copying the existing .env.example file as such:
$ cp .env.example .env
Then, generate your application Key
$ php artisan key:generate
Once this is done, make sure to open your .env file and ensure that the APP_KEY line looks correct - this is where my consternation came from:
APP_KEY=base64:MsUJo+qAhIVGPx52r1mbxCYn5YbWtCx8FQ7pTaHEvRo=base64:Ign7MpdXw4FMI5ai7SXXiU2vbraqhyEK1NniKPNJKGY=
You'll notice that the key length is wrong, it for some unknown reason (probably from running key:generate multiple times) has two base64= keys in there. Removing one is the fix to the problems I was having and this appears to be an Artisan/Laravel bug.
Hope this answer helps anyone who may be struggling with the same problems or annoying bug.
回答7:
in .env file give this key and you are done
APP_KEY=ABCDEF123ERD456EABCDEF123ERD456E
Still not working?
If you are working from cli, reboot the server and it will.
Want explanation?
ok, as the error message says:
The only supported ciphers are AES-128-CBC and AES-256-CBC with the correct key lengths.
Key length for AES-128-CBC is 16 characters e.g ABCDEF123ERD456E
Key length for AES-256-CBC is 32 characters e.g ABCDEF123ERD456EABCDEF123ERD456E
Make sure in config/app.php the cipher is set to the appropriate cipher like the two above and the key is pointing to the .env file APP_KEY variable. My app has the AES-256-CBC cipher set, so i gave it the 32 characters key
like APP_KEY=ABCDEF123ERD456EABCDEF123ERD456E and everything worked just fine after that.
回答8:
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.
回答9:
Another thing to just check is that your .env file is in the www-data group (or httpd or whatever your web server group is) and that the group has read permission.
On linux my permissions looked like this when I got this error:
-rw-rw-r-- 1 kevin kevin 618 Mar 16 09:32 .env
I then just removed read permission for all and removed write permission for group.
chmod 640 .env
Then I changed the group to www-data
chown kevin:www-data .env
My permissions now look like this:
-rw-r----- 1 kevin www-data 516 Mar 16 09:35 .env
回答10:
If the artisan command doesn't work and you get the same error in the command line, that means composer didn't do a good job at getting all the files, you should delete the vendor folder and run composer update again.
回答11:
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.
来源：https://stackoverflow.com/questions/39693312/the-only-supported-ciphers-are-aes-128-cbc-and-aes-256-cbc-with-the-correct-key