ParagonIE\Halite\KeyFactory::getSecurityLevels PHP Method

    public static function getSecurityLevels(string $level = self::INTERACTIVE) : array
    {
        switch ($level) {
            case self::INTERACTIVE:
                return [\Sodium\CRYPTO_PWHASH_OPSLIMIT_INTERACTIVE, \Sodium\CRYPTO_PWHASH_MEMLIMIT_INTERACTIVE];
            case self::MODERATE:
                return [\Sodium\CRYPTO_PWHASH_OPSLIMIT_MODERATE, \Sodium\CRYPTO_PWHASH_MEMLIMIT_MODERATE];
            case self::SENSITIVE:
                return [\Sodium\CRYPTO_PWHASH_OPSLIMIT_SENSITIVE, \Sodium\CRYPTO_PWHASH_MEMLIMIT_SENSITIVE];
            default:
                throw new CryptoException\InvalidType('Invalid security level for Argon2i');
        }
    }

 /**
  * Hash then encrypt a password
  *
  * @param HiddenString $password    The user's password
  * @param EncryptionKey $secretKey  The master key for all passwords
  * @param string $level             The security level for this password
  * @return string                   An encrypted hash to store
  */
 public static function hash(HiddenString $password, EncryptionKey $secretKey, string $level = KeyFactory::INTERACTIVE) : string
 {
     $kdfLimits = KeyFactory::getSecurityLevels($level);
     // First, let's calculate the hash
     $hashed = \Sodium\crypto_pwhash_str($password->getString(), $kdfLimits[0], $kdfLimits[1]);
     // Now let's encrypt the result
     return Crypto::encrypt(new HiddenString($hashed), $secretKey);
 }