{!> ../../docs_src/security/tutorial004.py!}
```

////

## Update the dependencies

Update `get_current_user` to receive the same token as before, but this time, using JWT tokens.

Decode the received token, verify it, and return the current user.

If the token is invalid, return an HTTP error right away.

//// tab | Python 3.10+

```Python hl_lines="90-107"

        for (String token : range.split(",")) {
            if (token.startsWith("[")) {
                ranges.add(new RangeValue(token.replace("[", ""), true));
            } else if (token.startsWith("(")) {
                ranges.add(new RangeValue(token.replace("(", ""), false));
            } else if (token.endsWith("]")) {
                ranges.add(new RangeValue(token.replace("]", ""), true));

///

## Retorne o token

A resposta do endpoint `token` deve ser um objeto JSON.

Deve ter um `token_type`. No nosso caso, como estamos usando tokens "Bearer", o tipo de token deve ser "`bearer`".

E deve ter um `access_token`, com uma string contendo nosso token de acesso.

Para este exemplo simples, seremos completamente inseguros e retornaremos o mesmo `username` do token.

/// tip | Dica

	// Create a custom split function by wrapping the existing ScanWords function.
	split := func(data []byte, atEOF bool) (advance int, token []byte, err error) {
		advance, token, err = bufio.ScanWords(data, atEOF)
		if err == nil && token != nil {
			_, err = strconv.ParseInt(string(token), 10, 32)
		}
		return
	}
	// Set the split function for the scanning operation.
	scanner.Split(split)
	// Validate the input

* Configure any required permissions and roles using dependencies.
* Never store plaintext passwords, only password hashes.
* Implement and use well-known cryptographic tools, like Passlib and JWT tokens, etc.
* Add more granular permission controls with OAuth2 scopes where needed.
* ...etc.

	case "true", `"true"`: // true without double quotes is deprecated in Feb 2022
		if len(tokens) == 1 {
			return ongoingRestoreObj(), nil
		}
	case "false", `"false"`: // false without double quotes is deprecated in Feb 2022
		if len(tokens) != 2 {
			return restoreObjStatus{}, errRestoreHDRMalformed
		}
		expiryTokens := strings.SplitN(tokens[1], "=", 2)
		if len(expiryTokens) != 2 {

     */
    // CHECKSTYLE_ON: LineLength
    public static void main(String... args) {
        System.out.println("Display parameters as parsed by Maven (in canonical form and as a list of tokens) and"
                + " comparison result:");
        if (args.length == 0) {
            return;
        }

        ComparableVersion prev = null;
        int i = 1;

  - `alpha` support (guarded by the `ServiceAccountTokenJTI` feature gate) for adding a `jti` (JWT ID) claim to service account tokens it issues, adding an `authentication.kubernetes.io/credential-id` audit annotation in audit logs when the tokens are issued, and `authentication.kubernetes.io/credential-id` entry in the extra user info when the token is used to authenticate.

<img src="/img/tutorial/security/image11.png">

## JWT token with scopes

Now, modify the token *path operation* to return the scopes requested.

We are still using the same `OAuth2PasswordRequestForm`. It includes a property `scopes` with a `list` of `str`, with each scope it received in the request.

And we return the scopes as part of the JWT token.

/// danger

- Promotes the ServiceAccountTokenJTI feature to GA, which adds a `jti` claim to issued service account tokens and embeds the `jti` claim as a `authentication.kubernetes.io/credential-id=["JTI=..."]` value in user extra info