ParagonIE\CipherSweet\KeyProvider\StringProvider::__construct(): Argument #1 ($rawKey) must be of type string, null given

[Astelll]

I'm not sure that I'm asking in the right place, but I want to understand and solve the problem, so I'll write it here anyway.

I installed to my project developed with Laravel framework this library https://github.com/spatie/laravel-ciphersweet, which implements Ciphersweet use within Laravel, and tried to encrypt data in my DB with this command php artisan ciphersweet:encrypt "App\Models\User" da61321c8814fe47f6f647f26330bc34f88fd8c32c1df25af4f0b3a30dff00e9 , but got error ParagonIE\CipherSweet\KeyProvider\StringProvider::__construct(): Argument #1 ($rawKey) must be of type string, null given, called in /var/www/fastuser/data/www/api.dev.clanhall.net/vendor/spatie/laravel-ciphersweet/src/LaravelCipherSweetServiceProvider.php on line 52 on line 48-55 I see this code:

48 protected function buildKeyProvider(BackendInterface $backend): KeyProviderInterface
49    {
50        return match (config('ciphersweet.provider')) {
51            'file' => new FileProvider(config('ciphersweet.providers.file.path')),
52            'string' => new StringProvider(config('ciphersweet.providers.string.key')),
53            default => new RandomProvider($backend),
54        };
55    }

and then if I go to StringProvider I see

public function __construct(string $rawKey = '')
    {
        if (Binary::safeStrlen($rawKey) === 64) {
            $this->rootSymmetricKey = Hex::decode($rawKey);
        } elseif (Binary::safeStrlen($rawKey) === 44) {
            $this->rootSymmetricKey = Base64UrlSafe::decode($rawKey);
        } elseif (Binary::safeStrlen($rawKey) === 32) {
            $this->rootSymmetricKey = $rawKey;
        } else {
            throw new CryptoOperationException('Invalid key size');
        }
    }

I tried to google why PHP see empty string as null, but without success, and I'm not sure that this is the problem.

What am I doing wrong and how can I try to fix it? As I see, no one has ansered to my question in that thread, so maybe only me got this error, and maybe I don't know some basics.

I would appreciate your help.

[paragonie-security]

Somewhere, it's passing null to the constructor of StringProvider. This usually happens when something was expected to be defined, but it isn't.

StringProvider is strictly typed. This is probably a configuration issue with the laravel-ciphersweet package.

[Astelll]

Somewhere, it's passing null to the constructor of StringProvider. This usually happens when something was expected to be defined, but it isn't.

StringProvider is strictly typed. This is probably a configuration issue with the laravel-ciphersweet package.

Thank you for your answer Can I make a screenshot of your anwser and use it in in that thread?

[paragonie-security]

Sure

[sandeep0108]

If you should written step of generating key (2. Generating the encrypting key) before publishing configuration line, So issue will not come like this

ParagonIE\CipherSweet\KeyProvider\StringProvider::__construct(): Argument #1 ($rawKey) must be of type string, null given, called in /var/www/html/riview_app/vendor/spatie/laravel-ciphersweet/src/LaravelCipherSweetServiceProvider.php on line 74