Firebase 身份验证为依赖于会话 Cookie 的传统网站提供了服务器端会话 Cookie 管理功能。客户端 ID 令牌的有效时间短，可能需要在每次到期时进行重定向以更新会话 Cookie 的机制，与此相比，Firebase 身份验证提供的解决方案具有多重优势：
- 基于 JWT 的会话令牌（只能使用授权的服务帐号生成）增强了安全性。
- 无状态会话 Cookie 具有使用 JWT 进行身份验证的所有好处。这种会话 Cookie 与 ID 令牌具备同样的声明（包括自定义声明），因而支持对会话 Cookie 执行同样的权限检查。
- 能够创建具备自定义有效期（从 5 分钟到 2 周）的会话 Cookie。
- 能够根据应用要求灵活地执行 Cookie 政策：网域、路径、安全、
httpOnly等等。 - 当怀疑出现令牌被盗的情况时，能够使用现有的刷新令牌撤消 API 来撤消会话 Cookie。
- 能够在出现重大帐号变化时检测会话撤消情况。
登录
假设有一个使用 httpOnly 服务器端 Cookie 的应用，该应用使用客户端 SDK 在登录页面上登录了一位用户。这时，系统会生成一个 Firebase ID 令牌，然后通过 HTTP POST 将该 ID 令牌发送至一个会话登录端点。在该端点上，系统将使用 Admin SDK 生成一个会话 Cookie。成功生成之后，该状态应从客户端存储空间中清除。
firebase.initializeApp({
apiKey: 'AIza…',
authDomain: '<PROJECT_ID>.firebasepp.com'
});
// As httpOnly cookies are to be used, do not persist any state client side.
firebase.auth().setPersistence(firebase.auth.Auth.Persistence.NONE);
// When the user signs in with email and password.
firebase.auth().signInWithEmailAndPassword('user@example.com', 'password').then(user => {
// Get the user's ID token as it is needed to exchange for a session cookie.
return user.getIdToken().then(idToken = > {
// Session login endpoint is queried and the session cookie is set.
// CSRF protection should be taken into account.
// ...
const csrfToken = getCookie('csrfToken')
return postIdTokenToSessionLogin('/sessionLogin', idToken, csrfToken);
});
}).then(() => {
// A page redirect would suffice as the persistence is set to NONE.
return firebase.auth().signOut();
}).then(() => {
window.location.assign('/profile');
});
创建会话 Cookie
如需生成会话 Cookie 以换取提供的 ID 令牌，您需要一个 HTTP 端点。将令牌发送到该端点，并使用 Firebase Admin SDK 设置自定义会话时长。您应采取适当措施来防止跨站请求伪造 (CSRF) 攻击。
Node.js
app.post('/sessionLogin', (req, res) => {
// Get the ID token passed and the CSRF token.
const idToken = req.body.idToken.toString();
const csrfToken = req.body.csrfToken.toString();
// Guard against CSRF attacks.
if (csrfToken !== req.cookies.csrfToken) {
res.status(401).send('UNAUTHORIZED REQUEST!');
return;
}
// Set session expiration to 5 days.
const expiresIn = 60 * 60 * 24 * 5 * 1000;
// Create the session cookie. This will also verify the ID token in the process.
// The session cookie will have the same claims as the ID token.
// To only allow session cookie setting on recent sign-in, auth_time in ID token
// can be checked to ensure user was recently signed in before creating a session cookie.
getAuth()
.createSessionCookie(idToken, { expiresIn })
.then(
(sessionCookie) => {
// Set cookie policy for session cookie.
const options = { maxAge: expiresIn, httpOnly: true, secure: true };
res.cookie('session', sessionCookie, options);
res.end(JSON.stringify({ status: 'success' }));
},
(error) => {
res.status(401).send('UNAUTHORIZED REQUEST!');
}
);
});
Java
@POST
@Path("/sessionLogin")
@Consumes("application/json")
public Response createSessionCookie(LoginRequest request) {
// Get the ID token sent by the client
String idToken = request.getIdToken();
// Set session expiration to 5 days.
long expiresIn = TimeUnit.DAYS.toMillis(5);
SessionCookieOptions options = SessionCookieOptions.builder()
.setExpiresIn(expiresIn)
.build();
try {
// Create the session cookie. This will also verify the ID token in the process.
// The session cookie will have the same claims as the ID token.
String sessionCookie = FirebaseAuth.getInstance().createSessionCookie(idToken, options);
// Set cookie policy parameters as required.
NewCookie cookie = new NewCookie("session", sessionCookie /* ... other parameters */);
return Response.ok().cookie(cookie).build();
} catch (FirebaseAuthException e) {
return Response.status(Status.UNAUTHORIZED).entity("Failed to create a session cookie")
.build();
}
}
Python
@app.route('/sessionLogin', methods=['POST'])
def session_login():
# Get the ID token sent by the client
id_token = flask.request.json['idToken']
# Set session expiration to 5 days.
expires_in = datetime.timedelta(days=5)
try:
# Create the session cookie. This will also verify the ID token in the process.
# The session cookie will have the same claims as the ID token.
session_cookie = auth.create_session_cookie(id_token, expires_in=expires_in)
response = flask.jsonify({'status': 'success'})
# Set cookie policy for session cookie.
expires = datetime.datetime.now() + expires_in
response.set_cookie(
'session', session_cookie, expires=expires, httponly=True, secure=True)
return response
except exceptions.FirebaseError:
return flask.abort(401, 'Failed to create a session cookie')
Go
return func(w http.ResponseWriter, r *http.Request) {
// Get the ID token sent by the client
defer r.Body.Close()
idToken, err := getIDTokenFromBody(r)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
// Set session expiration to 5 days.
expiresIn := time.Hour * 24 * 5
// Create the session cookie. This will also verify the ID token in the process.
// The session cookie will have the same claims as the ID token.
// To only allow session cookie setting on recent sign-in, auth_time in ID token
// can be checked to ensure user was recently signed in before creating a session cookie.
cookie, err := client.SessionCookie(r.Context(), idToken, expiresIn)
if err != nil {
http.Error(w, "Failed to create a session cookie", http.StatusInternalServerError)
return
}
// Set cookie policy for session cookie.
http.SetCookie(w, &http.Cookie{
Name: "session",
Value: cookie,
MaxAge: int(expiresIn.Seconds()),
HttpOnly: true,
Secure: true,
})
w.Write([]byte(`{"status": "success"}`))
}
C#
// POST: /sessionLogin
[HttpPost]
public async Task<ActionResult> Login([FromBody] LoginRequest request)
{
// Set session expiration to 5 days.
var options = new SessionCookieOptions()
{
ExpiresIn = TimeSpan.FromDays(5),
};
try
{
// Create the session cookie. This will also verify the ID token in the process.
// The session cookie will have the same claims as the ID token.
var sessionCookie = await FirebaseAuth.DefaultInstance
.CreateSessionCookieAsync(request.IdToken, options);
// Set cookie policy parameters as required.
var cookieOptions = new CookieOptions()
{
Expires = DateTimeOffset.UtcNow.Add(options.ExpiresIn),
HttpOnly = true,
Secure = true,
};
this.Response.Cookies.Append("session", sessionCookie, cookieOptions);
return this.Ok();
}
catch (FirebaseAuthException)
{
return this.Unauthorized("Failed to create a session cookie");
}
}
对于敏感型应用，您应在发送会话 Cookie 之前检查 auth_time，尽量缩短 ID 令牌被盗情况下遭受攻击的时间。
Node.js
getAuth()
.verifyIdToken(idToken)
.then((decodedIdToken) => {
// Only process if the user just signed in in the last 5 minutes.
if (new Date().getTime() / 1000 - decodedIdToken.auth_time < 5 * 60) {
// Create session cookie and set it.
return getAuth().createSessionCookie(idToken, { expiresIn });
}
// A user that was not recently signed in is trying to set a session cookie.
// To guard against ID token theft, require re-authentication.
res.status(401).send('Recent sign in required!');
});
Java
// To ensure that cookies are set only on recently signed in users, check auth_time in
// ID token before creating a cookie.
FirebaseToken decodedToken = FirebaseAuth.getInstance().verifyIdToken(idToken);
long authTimeMillis = TimeUnit.SECONDS.toMillis(
(long) decodedToken.getClaims().get("auth_time"));
// Only process if the user signed in within the last 5 minutes.
if (System.currentTimeMillis() - authTimeMillis < TimeUnit.MINUTES.toMillis(5)) {
long expiresIn = TimeUnit.DAYS.toMillis(5);
SessionCookieOptions options = SessionCookieOptions.builder()
.setExpiresIn(expiresIn)
.build();
String sessionCookie = FirebaseAuth.getInstance().createSessionCookie(idToken, options);
// Set cookie policy parameters as required.
NewCookie cookie = new NewCookie("session", sessionCookie);
return Response.ok().cookie(cookie).build();
}
// User did not sign in recently. To guard against ID token theft, require
// re-authentication.
return Response.status(Status.UNAUTHORIZED).entity("Recent sign in required").build();
Python
# To ensure that cookies are set only on recently signed in users, check auth_time in
# ID token before creating a cookie.
try:
decoded_claims = auth.verify_id_token(id_token)
# Only process if the user signed in within the last 5 minutes.
if time.time() - decoded_claims['auth_time'] < 5 * 60:
expires_in = datetime.timedelta(days=5)
expires = datetime.datetime.now() + expires_in
session_cookie = auth.create_session_cookie(id_token, expires_in=expires_in)
response = flask.jsonify({'status': 'success'})
response.set_cookie(
'session', session_cookie, expires=expires, httponly=True, secure=True)
return response
# User did not sign in recently. To guard against ID token theft, require
# re-authentication.
return flask.abort(401, 'Recent sign in required')
except auth.InvalidIdTokenError:
return flask.abort(401, 'Invalid ID token')
except exceptions.FirebaseError:
return flask.abort(401, 'Failed to create a session cookie')
Go
return func(w http.ResponseWriter, r *http.Request) {
// Get the ID token sent by the client
defer r.Body.Close()
idToken, err := getIDTokenFromBody(r)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
decoded, err := client.VerifyIDToken(r.Context(), idToken)
if err != nil {
http.Error(w, "Invalid ID token", http.StatusUnauthorized)
return
}
// Return error if the sign-in is older than 5 minutes.
if time.Now().Unix()-decoded.Claims["auth_time"].(int64) > 5*60 {
http.Error(w, "Recent sign-in required", http.StatusUnauthorized)
return
}
expiresIn := time.Hour * 24 * 5
cookie, err := client.SessionCookie(r.Context(), idToken, expiresIn)
if err != nil {
http.Error(w, "Failed to create a session cookie", http.StatusInternalServerError)
return
}
http.SetCookie(w, &http.Cookie{
Name: "session",
Value: cookie,
MaxAge: int(expiresIn.Seconds()),
HttpOnly: true,
Secure: true,
})
w.Write([]byte(`{"status": "success"}`))
}
C#
// To ensure that cookies are set only on recently signed in users, check auth_time in
// ID token before creating a cookie.
var decodedToken = await FirebaseAuth.DefaultInstance.VerifyIdTokenAsync(idToken);
var authTime = new DateTime(1970, 1, 1).AddSeconds(
(long)decodedToken.Claims["auth_time"]);
// Only process if the user signed in within the last 5 minutes.
if (DateTime.UtcNow - authTime < TimeSpan.FromMinutes(5))
{
var options = new SessionCookieOptions()
{
ExpiresIn = TimeSpan.FromDays(5),
};
var sessionCookie = await FirebaseAuth.DefaultInstance.CreateSessionCookieAsync(
idToken, options);
// Set cookie policy parameters as required.
this.Response.Cookies.Append("session", sessionCookie);
return this.Ok();
}
// User did not sign in recently. To guard against ID token theft, require
// re-authentication.
return this.Unauthorized("Recent sign in required");
验证会话 Cookie 并检查权限
用户登录后，网站所有受访问权限保护的部分都应检查会话 Cookie 并对其进行验证，验证通过后才能根据某些安全规则提供受限制的内容。
Node.js
// Whenever a user is accessing restricted content that requires authentication.
app.post('/profile', (req, res) => {
const sessionCookie = req.cookies.session || '';
// Verify the session cookie. In this case an additional check is added to detect
// if the user's Firebase session was revoked, user deleted/disabled, etc.
getAuth()
.verifySessionCookie(sessionCookie, true /** checkRevoked */)
.then((decodedClaims) => {
serveContentForUser('/profile', req, res, decodedClaims);
})
.catch((error) => {
// Session cookie is unavailable or invalid. Force user to login.
res.redirect('/login');
});
});
Java
@POST
@Path("/profile")
public Response verifySessionCookie(@CookieParam("session") Cookie cookie) {
String sessionCookie = cookie.getValue();
try {
// Verify the session cookie. In this case an additional check is added to detect
// if the user's Firebase session was revoked, user deleted/disabled, etc.
final boolean checkRevoked = true;
FirebaseToken decodedToken = FirebaseAuth.getInstance().verifySessionCookie(
sessionCookie, checkRevoked);
return serveContentForUser(decodedToken);
} catch (FirebaseAuthException e) {
// Session cookie is unavailable, invalid or revoked. Force user to login.
return Response.temporaryRedirect(URI.create("/login")).build();
}
}
Python
@app.route('/profile', methods=['POST'])
def access_restricted_content():
session_cookie = flask.request.cookies.get('session')
if not session_cookie:
# Session cookie is unavailable. Force user to login.
return flask.redirect('/login')
# Verify the session cookie. In this case an additional check is added to detect
# if the user's Firebase session was revoked, user deleted/disabled, etc.
try:
decoded_claims = auth.verify_session_cookie(session_cookie, check_revoked=True)
return serve_content_for_user(decoded_claims)
except auth.InvalidSessionCookieError:
# Session cookie is invalid, expired or revoked. Force user to login.
return flask.redirect('/login')
Go
return func(w http.ResponseWriter, r *http.Request) {
// Get the ID token sent by the client
cookie, err := r.Cookie("session")
if err != nil {
// Session cookie is unavailable. Force user to login.
http.Redirect(w, r, "/login", http.StatusFound)
return
}
// Verify the session cookie. In this case an additional check is added to detect
// if the user's Firebase session was revoked, user deleted/disabled, etc.
decoded, err := client.VerifySessionCookieAndCheckRevoked(r.Context(), cookie.Value)
if err != nil {
// Session cookie is invalid. Force user to login.
http.Redirect(w, r, "/login", http.StatusFound)
return
}
serveContentForUser(w, r, decoded)
}
C#
// POST: /profile
[HttpPost]
public async Task<ActionResult> Profile()
{
var sessionCookie = this.Request.Cookies["session"];
if (string.IsNullOrEmpty(sessionCookie))
{
// Session cookie is not available. Force user to login.
return this.Redirect("/login");
}
try
{
// Verify the session cookie. In this case an additional check is added to detect
// if the user's Firebase session was revoked, user deleted/disabled, etc.
var checkRevoked = true;
var decodedToken = await FirebaseAuth.DefaultInstance.VerifySessionCookieAsync(
sessionCookie, checkRevoked);
return ViewContentForUser(decodedToken);
}
catch (FirebaseAuthException)
{
// Session cookie is invalid or revoked. Force user to login.
return this.Redirect("/login");
}
}
使用 Admin SDK verifySessionCookie API 验证会话 Cookie。这是一项低开销的操作。系统会首先查询公共证书，并将其缓存直至过期。会话 Cookie 验证流程可使用缓存的公共证书来完成，因而无需任何额外的网络请求。
如果 Cookie 无效，请确保将其清除，并要求用户重新登录。另外，还有一个选项可用于检查会话撤消。请注意，使用此选项会在每次验证会话 Cookie 时增加一次额外的网络请求。
出于安全原因，Firebase 会话 Cookie 无法与其他 Firebase 服务一起使用，因为这种 Cookie 的自定义有效期限最长可以设置为 2 周。所有使用服务器端 Cookie 的应用都需要在服务器端验证这些 Cookie 后执行权限检查。
Node.js
getAuth()
.verifySessionCookie(sessionCookie, true)
.then((decodedClaims) => {
// Check custom claims to confirm user is an admin.
if (decodedClaims.admin === true) {
return serveContentForAdmin('/admin', req, res, decodedClaims);
}
res.status(401).send('UNAUTHORIZED REQUEST!');
})
.catch((error) => {
// Session cookie is unavailable or invalid. Force user to login.
res.redirect('/login');
});
Java
try {
final boolean checkRevoked = true;
FirebaseToken decodedToken = FirebaseAuth.getInstance().verifySessionCookie(
sessionCookie, checkRevoked);
if (Boolean.TRUE.equals(decodedToken.getClaims().get("admin"))) {
return serveContentForAdmin(decodedToken);
}
return Response.status(Status.UNAUTHORIZED).entity("Insufficient permissions").build();
} catch (FirebaseAuthException e) {
// Session cookie is unavailable, invalid or revoked. Force user to login.
return Response.temporaryRedirect(URI.create("/login")).build();
}
Python
try:
decoded_claims = auth.verify_session_cookie(session_cookie, check_revoked=True)
# Check custom claims to confirm user is an admin.
if decoded_claims.get('admin') is True:
return serve_content_for_admin(decoded_claims)
return flask.abort(401, 'Insufficient permissions')
except auth.InvalidSessionCookieError:
# Session cookie is invalid, expired or revoked. Force user to login.
return flask.redirect('/login')
Go
return func(w http.ResponseWriter, r *http.Request) {
cookie, err := r.Cookie("session")
if err != nil {
// Session cookie is unavailable. Force user to login.
http.Redirect(w, r, "/login", http.StatusFound)
return
}
decoded, err := client.VerifySessionCookieAndCheckRevoked(r.Context(), cookie.Value)
if err != nil {
// Session cookie is invalid. Force user to login.
http.Redirect(w, r, "/login", http.StatusFound)
return
}
// Check custom claims to confirm user is an admin.
if decoded.Claims["admin"] != true {
http.Error(w, "Insufficient permissions", http.StatusUnauthorized)
return
}
serveContentForAdmin(w, r, decoded)
}
C#
try
{
var checkRevoked = true;
var decodedToken = await FirebaseAuth.DefaultInstance.VerifySessionCookieAsync(
sessionCookie, checkRevoked);
object isAdmin;
if (decodedToken.Claims.TryGetValue("admin", out isAdmin) && (bool)isAdmin)
{
return ViewContentForAdmin(decodedToken);
}
return this.Unauthorized("Insufficient permissions");
}
catch (FirebaseAuthException)
{
// Session cookie is invalid or revoked. Force user to login.
return this.Redirect("/login");
}
退出帐号
当用户从客户端退出登录时，您可通过端点在服务器端进行处理。发出 POST/GET 请求即可清除会话 Cookie。请注意，即使清除了 Cookie，它仍会保持有效，直至其自然到期。
Node.js
app.post('/sessionLogout', (req, res) => {
res.clearCookie('session');
res.redirect('/login');
});
Java
@POST
@Path("/sessionLogout")
public Response clearSessionCookie(@CookieParam("session") Cookie cookie) {
final int maxAge = 0;
NewCookie newCookie = new NewCookie(cookie, null, maxAge, true);
return Response.temporaryRedirect(URI.create("/login")).cookie(newCookie).build();
}
Python
@app.route('/sessionLogout', methods=['POST'])
def session_logout():
response = flask.make_response(flask.redirect('/login'))
response.set_cookie('session', expires=0)
return response
Go
return func(w http.ResponseWriter, r *http.Request) {
http.SetCookie(w, &http.Cookie{
Name: "session",
Value: "",
MaxAge: 0,
})
http.Redirect(w, r, "/login", http.StatusFound)
}
C#
// POST: /sessionLogout
[HttpPost]
public ActionResult ClearSessionCookie()
{
this.Response.Cookies.Delete("session");
return this.Redirect("/login");
}
调用撤消 API 可撤消当前会话及相应用户的所有其他会话，并强制重新登录。对于敏感型应用，建议您设置较短的会话时长。
Node.js
app.post('/sessionLogout', (req, res) => {
const sessionCookie = req.cookies.session || '';
res.clearCookie('session');
getAuth()
.verifySessionCookie(sessionCookie)
.then((decodedClaims) => {
return getAuth().revokeRefreshTokens(decodedClaims.sub);
})
.then(() => {
res.redirect('/login');
})
.catch((error) => {
res.redirect('/login');
});
});
Java
@POST
@Path("/sessionLogout")
public Response clearSessionCookieAndRevoke(@CookieParam("session") Cookie cookie) {
String sessionCookie = cookie.getValue();
try {
FirebaseToken decodedToken = FirebaseAuth.getInstance().verifySessionCookie(sessionCookie);
FirebaseAuth.getInstance().revokeRefreshTokens(decodedToken.getUid());
final int maxAge = 0;
NewCookie newCookie = new NewCookie(cookie, null, maxAge, true);
return Response.temporaryRedirect(URI.create("/login")).cookie(newCookie).build();
} catch (FirebaseAuthException e) {
return Response.temporaryRedirect(URI.create("/login")).build();
}
}
Python
@app.route('/sessionLogout', methods=['POST'])
def session_logout():
session_cookie = flask.request.cookies.get('session')
try:
decoded_claims = auth.verify_session_cookie(session_cookie)
auth.revoke_refresh_tokens(decoded_claims['sub'])
response = flask.make_response(flask.redirect('/login'))
response.set_cookie('session', expires=0)
return response
except auth.InvalidSessionCookieError:
return flask.redirect('/login')
Go
return func(w http.ResponseWriter, r *http.Request) {
cookie, err := r.Cookie("session")
if err != nil {
// Session cookie is unavailable. Force user to login.
http.Redirect(w, r, "/login", http.StatusFound)
return
}
decoded, err := client.VerifySessionCookie(r.Context(), cookie.Value)
if err != nil {
// Session cookie is invalid. Force user to login.
http.Redirect(w, r, "/login", http.StatusFound)
return
}
if err := client.RevokeRefreshTokens(r.Context(), decoded.UID); err != nil {
http.Error(w, "Failed to revoke refresh token", http.StatusInternalServerError)
return
}
http.SetCookie(w, &http.Cookie{
Name: "session",
Value: "",
MaxAge: 0,
})
http.Redirect(w, r, "/login", http.StatusFound)
}
C#
// POST: /sessionLogout
[HttpPost]
public async Task<ActionResult> ClearSessionCookieAndRevoke()
{
var sessionCookie = this.Request.Cookies["session"];
try
{
var decodedToken = await FirebaseAuth.DefaultInstance
.VerifySessionCookieAsync(sessionCookie);
await FirebaseAuth.DefaultInstance.RevokeRefreshTokensAsync(decodedToken.Uid);
this.Response.Cookies.Delete("session");
return this.Redirect("/login");
}
catch (FirebaseAuthException)
{
return this.Redirect("/login");
}
}
使用第三方 JWT 库验证会话 Cookie
即使您的后端使用的语言不受 Firebase Admin SDK 支持，您也仍然可以验证会话 Cookie。首先，找到适合您的语言的第三方 JWT 库。然后，验证会话 Cookie 的标头、载荷和签名。
验证会话 Cookie 的标头是否遵守以下限制：
| Firebase 会话 Cookie 标头声明 | ||
|---|---|---|
alg |
算法 | "RS256" |
kid |
密钥 ID | 必须与以下网址上列出的其中一个公钥相对应：
https://www.googleapis.com/identitytoolkit/v3/relyingparty/publicKeys
|
验证会话 Cookie 的载荷遵守以下限制：
| Firebase 会话 Cookie 载荷声明 | ||
|---|---|---|
exp |
到期时间 | 必须是将来的时间。时间从 UNIX 计时原点开始计算，以秒为单位。到期时间根据创建 Cookie 时提供的自定义时长设置。 |
iat |
颁发时间 | 必须是过去的时间。时间从 UNIX 计时原点开始计算，以秒为单位。 |
aud |
受众 | 必须是您的 Firebase 项目 ID（您的 Firebase 项目的唯一标识符），可在该项目控制台的网址中找到。 |
iss |
颁发者 | 必须是 "https://session.firebase.google.com/<projectId>"，其中 <projectId> 是用于上述 aud 的同一项目 ID。 |
sub |
主题 | 必须是非空字符串，并且必须是用户或设备的 uid。 |
auth_time
|
身份验证时间 |
必须是过去的时间，指的是用户通过身份验证的时间。此时间与用于创建会话 Cookie 的 ID 令牌的 auth_time 相符。 |
最后，确保此会话 Cookie 是通过与令牌的子声明相对应的私钥进行签名的。从 https://www.googleapis.com/identitytoolkit/v3/relyingparty/publicKeys 获取公钥并使用 JWT 库来验证签名。使用从该端点响应的 Cache-Control 标头中的 max-age 值来确定何时刷新公钥。
如果上述所有验证均成功完成，您便可以使用会话 Cookie 的主体 (sub) 作为相应用户或设备的 uid。