protected CsrfTokenGenerator::computeToken($seed, $value = '')
Generates a token based on $value, the token seed, and the private key.
Parameters
string $seed: The per-session token seed.
string $value: (optional) An additional value to base the token on.
Return value
string A 43-character URL-safe token for validation, based on the token seed, the hash salt provided by Settings::getHashSalt(), and the 'drupal_private_key' configuration variable.
See also
\Drupal\Core\Site\Settings::getHashS