Laravel, php artisan passport:install error - laravel

Question

I was curious about setting up an API in Laravel using Passport so I followed their documentation here:
https://laravel.com/docs/5.6/passport
Once I run
php artisan passport:install
It gives me this error:
ErrorException : openssl_pkey_new(): private key length is too short; it needs to be at least 384 bits, not 0
at /Users/fantastisk/web/blog-laravel/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA.php:560
556| $config = array();
557| if (isset($this->configFile)) {
558| $config['config'] = $this->configFile;
559| }
> 560| $rsa = openssl_pkey_new(array('private_key_bits' => $bits) + $config);
561| openssl_pkey_export($rsa, $privatekey, null, $config);
562| $publickey = openssl_pkey_get_details($rsa);
563| $publickey = $publickey['key'];
564|
Exception trace:
1 openssl_pkey_new(["4096", "/Users/fantastisk/web/blog-laravel/vendor/phpseclib/phpseclib/phpseclib/Crypt/../openssl.cnf"])
/Users/fantastisk/web/blog-laravel/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA.php:560
2 phpseclib\Crypt\RSA::createKey("4096")
/Users/fantastisk/web/blog-laravel/vendor/laravel/passport/src/Console/KeysCommand.php:35
This is what i have in the openssl.cnf file
# minimalist openssl.cnf file for use with phpseclib
HOME = .
RANDFILE = $ENV::HOME/.rnd
distinguished_name = req_distinguished_name
[ v3_ca ]
I'm running on a mac with php 7.1 (i tried building it from source with openssl too), SSL Version => LibreSSL/2.0.20.
I tried following the documentation using homestead too, which gives me the exact same error.
To me it seems like there's a problem with the phpseclib library, but I haven't been able to find anything on google regarding this error.
As a final note, I tried running this command to check if openssl_pkey_new works:
openssl_pkey_new(array("digest_alg" => "sha512","private_key_bits" => 4096,"private_key_type" => OPENSSL_KEYTYPE_RSA,));
That worked with no error.
Any help or point in the right direction will be very much appreciated.

Answer 1

Try passing the length option as you run the install command:
php artisan passport:install --length=256
If that doesn't work then try forcing the key generation:
php artisan passport:key --force
You may need to run composer update prior.