# Return some error
    ...
```

But by using the `secrets.compare_digest()` it will be secure against a type of attacks called "timing attacks".

### Timing Attacks { #timing-attacks }

But what's a "timing attack"?

Let's imagine some attackers are trying to guess the username and password.

And they send a request with a username `johndoe` and a password `love123`.

    # Return some error
    ...
```

Porém, ao utilizar o `secrets.compare_digest()`, isso estará seguro contra um tipo de ataque chamado "timing attacks" (ataques de temporização).

### Ataques de Temporização { #timing-attacks }

Mas o que é um "timing attack" (ataque de temporização)?

Vamos imaginar que alguns invasores estão tentando adivinhar o usuário e a senha.

import java.util.concurrent.TimeUnit;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

/**
 * Security-focused test cases for NtlmPasswordAuthenticator to verify timing attack resistance.
 */
public class NtlmPasswordAuthenticatorTimingAttackTest {

    private static final int TIMING_ITERATIONS = 1000;

    # Devuelve algún error
    ...
```

Pero al usar `secrets.compare_digest()` será seguro contra un tipo de ataques llamados "timing attacks".

### Timing attacks { #timing-attacks }

¿Pero qué es un "timing attack"?

Imaginemos que algunos atacantes están tratando de adivinar el nombre de usuario y la contraseña.

Y envían un request con un nombre de usuario `johndoe` y una contraseña `love123`.

* plug-in: plug-in (do not translate to "complemento" or "extensión")
* plug-ins: plug-ins (do not translate to "complementos" or "extensiones")
* full stack: full stack (do not translate to "pila completa")
* full-stack: full-stack (do not translate to "de pila completa")
* stack: stack (do not translate to "pila")
* loop (as in async loop): loop (do not translate to "bucle" or "ciclo")

* mount (verb): монтировать
* mount (noun): точка монтирования / mount (keep in English if it's a FastAPI keyword)
* plugin: плагин
* plug-in: плагин
* full stack: full stack (do not translate)
* full-stack: full-stack (do not translate)
* loop (as in async loop): цикл событий
* Machine Learning: Машинное обучение
* Deep Learning: Глубокое обучение
* callback hell: callback hell (clarify as `ад обратных вызовов`)

Тогда они могут попробовать снова, зная, что правильнее что-то ближе к `stanleyjobsox`, чем к `johndoe`.

#### «Профессиональная» атака { #a-professional-attack }

Конечно, злоумышленники не будут делать всё это вручную — они напишут программу, возможно, с тысячами или миллионами попыток в секунду. И будут подбирать по одной дополнительной верной букве за раз.

Und dann können sie es noch einmal versuchen, wohl wissend, dass es wahrscheinlich eher etwas mit `stanleyjobsox` als mit `johndoe` zu tun hat.

#### Ein „professioneller“ Angriff { #a-professional-attack }

            context.invalidate();
            if (enforceIntegrity) {
                throw new CIFSException("Preauth integrity validation failed - possible downgrade attack detected");
            }
        }

        return isValid;
    }

    /**
     * Gets the current preauth hash for a session.
     *
     * @param sessionId the session identifier

  /**
   * @throws IllegalArgumentException if another entry in the bucket has the same key
   * @throws BucketOverflowException if this bucket has too many entries, which may indicate a hash
   *     flooding attack
   */
  private static void checkNoConflictInValueBucket(
      Object value, Entry<?, ?> entry, @Nullable ImmutableMapEntry<?, ?> valueBucketHead)
      throws BucketOverflowException {
    int bucketSize = 0;