### 使用

接下来，使用 `Depends` 把 `oauth2_scheme` 传入依赖项。

{* ../../docs_src/security/tutorial001.py hl[10] *}

该依赖项使用字符串（`str`）接收*路径操作函数*的参数 `token` 。

**FastAPI** 使用依赖项在 OpenAPI 概图（及 API 文档）中定义**安全方案**。

/// info | 技术细节

**FastAPI** 使用（在依赖项中声明的）类 `OAuth2PasswordBearer` 在 OpenAPI 中定义安全方案，这是因为它继承自 `fastapi.security.oauth2.OAuth2`，而该类又是继承自`fastapi.security.base.SecurityBase`。

from datetime import datetime, timedelta, timezone

import jwt
from fastapi import Depends, FastAPI, HTTPException, Security, status
from fastapi.security import (
    OAuth2PasswordBearer,
    OAuth2PasswordRequestForm,
    SecurityScopes,
)
from jwt.exceptions import InvalidTokenError
from pwdlib import PasswordHash
from pydantic import BaseModel, ValidationError

# to get a string like this run:
# openssl rand -hex 32

# Test security scheme at the top level, including OpenAPI
# Ref: https://github.com/fastapi/fastapi/discussions/14263
# Ref: https://github.com/fastapi/fastapi/issues/14271
from fastapi import Depends, FastAPI
from fastapi.security import HTTPBearer
from fastapi.testclient import TestClient
from inline_snapshot import snapshot

app = FastAPI()

bearer_scheme = HTTPBearer()


@app.get("/", dependencies=[Depends(bearer_scheme)])

        serverData.smaxMpxCount = 50;
        serverData.maxBufferSize = 16644;
        serverData.sessKey = 0x12345678;
        serverData.scapabilities = 0x8000F3FD; // Various capabilities
        serverData.oemDomainName = "WORKGROUP";
        serverData.securityMode = 0x0F; // User + encrypt passwords + signatures
        serverData.security = 1; // User level

from typing import Optional

import pytest
from fastapi import Depends, FastAPI, Security
from fastapi.security import OAuth2, OAuth2PasswordRequestFormStrict
from fastapi.testclient import TestClient
from pydantic import BaseModel

app = FastAPI()

reusable_oauth2 = OAuth2(
    flows={
        "password": {
            "tokenUrl": "token",
            "scopes": {"read:users": "Read the users", "write:users": "Create users"},
        }

import org.codelibs.core.exception.ClassNotFoundRuntimeException;
import org.codelibs.core.exception.IORuntimeException;

/**
 * Utility for serializing objects with security protections.
 * <p>
 * This utility provides object serialization and deserialization with built-in
 * security protections against deserialization attacks. By default, it uses an
 * ObjectInputFilter to restrict which classes can be deserialized.
 * </p>
 * <p>

 * limitations under the License.
 */

@file:JvmName("Certificates")

package okhttp3.tls

import java.security.GeneralSecurityException
import java.security.cert.CertificateFactory
import java.security.cert.X509Certificate
import okio.Buffer
import okio.ByteString
import okio.ByteString.Companion.toByteString

/**

 * the License.
 */
package okhttp3

import java.security.Principal
import java.security.cert.Certificate
import javax.net.ssl.SSLPeerUnverifiedException
import javax.net.ssl.SSLSession
import javax.net.ssl.SSLSessionContext
import javax.security.cert.X509Certificate

class FakeSSLSession(
  vararg val certificates: Certificate,
) : SSLSession {

        final int negotiateContextOffset = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;

        // Validate security buffer parameters
        if (securityBufferLength < 0 || securityBufferLength > 65536) { // 64KB max for security buffer
            throw new SMBProtocolDecodingException("Invalid security buffer length: " + securityBufferLength + " (must be 0-65536)");
        }
        if (securityBufferOffset < 0) {

import static com.google.common.base.Preconditions.checkState;

import com.google.errorprone.annotations.Immutable;
import java.nio.ByteBuffer;
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.NoSuchAlgorithmException;
import javax.crypto.Mac;

/**
 * {@link HashFunction} adapter for {@link Mac} instances.
 *
 * @author Kurt Alfred Kluever
 */
@Immutable