Puede ser utilizada por aplicaciones y sistemas de terceros.

Y también puede ser utilizada por ti mismo, para depurar, revisar y probar la misma aplicación.

## El flujo `password` { #the-password-flow }

Ahora retrocedamos un poco y entendamos qué es todo eso.

El "flujo" `password` es una de las formas ("flujos") definidas en OAuth2, para manejar la seguridad y la autenticación.

    if (args.length != 4) {
      System.out.println("Usage: SampleServer <keystore> <password> <root file> <port>");
      return;
    }

    String keystoreFile = args[0];
    String password = args[1];
    String root = args[2];
    int port = Integer.parseInt(args[3]);

    SSLContext sslContext = sslContext(keystoreFile, password);
    SampleServer server = new SampleServer(sslContext, root, port);
    server.run();

Resultaria em algo equivalente a:

```Python
UserInDB(
    username="john",
    password="secret",
    email="******@****.***",
    full_name=None,
)
```

Ou mais exatamente, usando `user_dict` diretamente, com qualquer conteúdo que ele possa ter no futuro:

```Python
UserInDB(
    username = user_dict["username"],
    password = user_dict["password"],
    email = user_dict["email"],
    full_name = user_dict["full_name"],

                                "title": "Full Name",
                                "anyOf": [{"type": "string"}, {"type": "null"}],
                            },
                            "password": {"title": "Password", "type": "string"},
                        },
                    },
                    "ValidationError": {
                        "title": "ValidationError",

            throw new IllegalArgumentException("Master password cannot be null or empty");
        }

        // Generate salt for key derivation
        this.salt = new byte[SALT_SIZE];
        secureRandom.nextBytes(this.salt);

        // Derive master key from password
        this.masterKey = deriveKey(masterPassword, salt);

        // Clear the master password after use
        Arrays.fill(masterPassword, '\0');
    }

        return "Secure console password prompt";
    }

    @Override
    public Optional<String> configTemplate() {
        return Optional.empty();
    }

    @Override
    public String handle(String config) throws SecDispatcherException {
        if (NAME.equals(config)) {
            try {
                return prompter.promptForPassword("Enter the master password: ");
            } catch (PrompterException e) {

        }
    }

    @Override
    public boolean changePassword(final String username, final String password) {
        if (isTargetUser(username) && StringUtil.isNotBlank(password)) {
            return executeCommand(updateCommand, username, password) == 0;
        }
        return true;
    }

    @Override
    public User load(final User user) {
        return user;
    }

    /**

    if not user_dict:
        raise HTTPException(status_code=400, detail="Incorrect username or password")
    user = UserInDB(**user_dict)
    hashed_password = fake_hash_password(form_data.password)
    if not hashed_password == user.hashed_password:
        raise HTTPException(status_code=400, detail="Incorrect username or password")

    return {"access_token": user.username, "token_type": "bearer"}


@app.get("/users/me")

     * Default constructor.
     */
    public ProfileForm() {
        // Default constructor
    }

    /** The old password. */
    @NotBlank
    public String oldPassword;

    /** The new password. */
    @NotBlank
    public String newPassword;

    /** The confirm new password. */
    @NotBlank
    public String confirmNewPassword;

    /**
     * Clears security information.
     */

		return tls.Certificate{}, ErrTLSUnexpectedData(nil).Msgf("The private key is not readable")
	}
	if x509.IsEncryptedPEMBlock(key) {
		password := env.Get(EnvCertPassword, "")
		if len(password) == 0 {
			return tls.Certificate{}, ErrTLSNoPassword(nil)
		}
		decryptedKey, decErr := x509.DecryptPEMBlock(key, []byte(password))
		if decErr != nil {
			return tls.Certificate{}, ErrTLSWrongPassword(decErr)
		}