¶ How To Validate User Token?

Update Time: 2022-05-14 10:21:54

Authentication Token is divided into two modes: local authentication and online authentication using Authing. We recommend verifying the JWT Token locally, because it saves your server bandwidth and speeds up the verification. You can also choose to send the token to the authentication interface of Authing, which will be verified by Authing and return the result, but this will cause network delays, and there may exist slow requests when the network is congested. The following is a comparison of the advantages and disadvantages of local verification and online verification:

Verification speed	Code complexity	Reliability
Online verification	Slow 🐢	simple	Single point of failure risk
Local verification	Fast 🐇	moderate	Distributed system

¶ Local verification

¶ Use the application key to verify the Token signed by the HS256 algorithm

If you directly call the login method (loginByEmail, loginByPhone, loginByUsername) or use OIDC authorization, and the IdToken signature algorithm type is set to HS256, please use this method to verify the Token.‌ The key can be obtained in the console>application>application details, as shown in the figure below:

The following code to verify the legality takes Node as an example (need to install JSON Web Token (opens new window)).

const jwt = require("jsonwebtoken");
try {
  let decoded = jwt.verify("JSON Web Token from client", "your_secret"),
    expired = Date.parse(new Date()) / 1000 > decoded.exp;
  if (expired) {
    // 过期
  } else {
    // 合法也没过期，正常放行
  }
} catch (error) {
  // 不合法
}

To avoid exposing the application key on the client side, please verify the validity of the id_token through the application key on the server side.‌

¶ Use the application public key to verify the IdToken signed by the RS256 algorithm

If you use the RS256 signature algorithm, you need to use the public key to verify the signature. Authing uses a private key to sign the application, please use https://<application domain>.authing.cn/oidc/.well-known/jwks.json to verify the signature. Both access_token and id_token issued by Authing can be verified with the above public key.

If you use javascript, you can use the jose library to verify the RS256 signature:

Please use jose library under version 2.x.x, newer versions are incompatible with the code below.

const jose = require("jose");
// 下面的参数内容是将 https://<应用域名>.Authing.cn/oidc/.well-known/jwks.json 返回的内容原封不动Copy过来
const keystore = jose.JWKS.asKeyStore({
  keys: [
    {
      e: "AQAB",
      n:
        "o8iCY52uBPOCnBSRCr3YtlZ0UTuQQ4NCeVMzV7JBtH-7Vuv0hwGJTb_hG-BeYOPz8i6YG_o367smV2r2mnXbC1cz_tBfHD4hA5vnJ1eCpKRWX-l6fYuS0UMti-Bmg0Su2IZxXF9T1Cu-AOlpgXFC1LlPABL4E0haHO8OwQ6QyEfiUIs0byAdf5zeEHFHseVHLjsM2pzWOvh5e_xt9NOJY4vB6iLtD5EIak04i1ND_O0Lz0OYbuV0KjluxaxoiexJ8kGo9W1SNza_2TqUAR6hsPkeOwwh-oHnNwZg8OEnwXFmNg-bW4KiBrQEG4yUVdFGENW6vAQaRa2bJX7obn4xCw",
      kty: "RSA",
      alg: "RS256",
      use: "sig",
      kid: "TfLOt3Lbn8_a8pRMuessamqj-o3DBCs1-owHLQ-VMqQ"
    }
  ]
});
// 选项中 issuer 的内容是 https://<应用域名>.Authing.cn/oidc，audience 的内容是 应用 ID
// id_token 很长，请向右滑动 ->
const res = jose.JWT.IdToken.verify(
  "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCIsImtpZCI6IlRmTE90M0xibjhfYThwUk11ZXNzYW1xai1vM0RCQ3MxLW93SExRLVZNcVEifQ.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.Z0TweYr9bCdYNJREVdvbJYcjXSfSsSNHBMqxTJeW-bnza0IIpBpEEVxlDG0Res6FZbcVzsQZzfJ9pj_nFgLjZxUUxv7Tpd13Sq_Ykg2JKepPf3-uoFqbORym07QEj4Uln0Quuh094MTb7z6bZZBEOYBac46zuj4uVp4vqk5HtCUSB4ASOAxwi7CeB1tKghISHz6PDcf6XJe_btHdzX1dparxtML-KvPxjpcHlt5emN88lpTAOX7Iq0EhsVE3PKrIDfCkG8XlL5y9TIW2Dz2iekcZ5PV17M35G6Dg2Q07Y_Apr18_oowOiQM5m_EbI90ist8CiqO9kBKreCOLMzub4Q",
  keystore,
  {
    issuer: "https://oidc1.Authing.cn/oidc",
    audience: "5f17a529f64fb009b794a2ff"
  }
);
console.log(res);

Result:

{
  sub: '5f719946524ee1099229496b',
  birthdate: null,
  family_name: null,
  gender: 'U',
  given_name: null,
  locale: null,
  middle_name: null,
  name: null,
  nickname: null,
  picture: 'https://files.Authing.co/user-contents/photos/9a9dc4d7-e756-45b1-81d8-095a28e476c6.jpg',
  preferred_username: 'test1',
  profile: null,
  updated_at: '2020-09-30T07:12:19.401Z',
  website: null,
  zoneinfo: null,
  email: 'test1@123.com',
  email_verified: false,
  phone_number: null,
  phone_number_verified: false,
  nonce: 'E65b1QoUYt',
  at_hash: 'B3IgOYDDa0Pz8v1_9qZrAw',
  aud: '5f17a529f64fb009b794a2ff',
  exp: 1601453558,
  iat: 1601449959,
  iss: 'https://oidc1.Authing.cn/oidc'
}

¶ Online verification

¶ Online verification of OIDC IdToken

This endpoint can detect access_token and id_token effectiveness refresh_token can not be detected.

Interface Description: check whether issued access_token or id_token is valid.
Interface Endpoint:GET https://<your application domain>.Authing.cn/api/v2/oidc/validate_token
Request parameters:

Parameter	Types of	Is it required	Description
access_token	string	no	The content of AccessToken.
id_token	string	no	The content of the IdToken.

Return data:

When access_token or id_token is legal, return decoded content of access_token/id_token

// access_token 检验后的返回结果：
{
    "jti": "K5TYewNhvdGBdHiRifMyW",
    "sub": "5f64afd1ad501364e3b43c1e",
    "iat": 1601456894,
    "exp": 1601460494,
    "scope": "openid profile email phone",
    "iss": "https://oidc1.Authing.cn/oidc",
    "aud": "5f17a529f64fb009b794a2ff"
}

// id_token 检验后的返回结果：
{
    "sub": "5f64afd1ad501364e3b43c1e",
    "birthdate": null,
    "family_name": null,
    "gender": "U",
    "given_name": null,
    "locale": null,
    "middle_name": null,
    "name": null,
    "nickname": null,
    "picture": "https://usercontents.Authing.cn/Authing-avatar.png",
    "preferred_username": "test1",
    "profile": null,
    "updated_at": "2020-09-27T06:06:29.853Z",
    "website": null,
    "zoneinfo": null,
    "email": "test1@123.com",
    "email_verified": false,
    "phone_number": null,
    "phone_number_verified": false,
    "nonce": "CQsguqUdl7",
    "at_hash": "10iOtwuTNtyQLzlNYXAHeg",
    "aud": "5f17a529f64fb009b794a2ff",
    "exp": 1601460494,
    "iat": 1601456894,
    "iss": "https://oidc1.Authing.cn/oidc",
}

If access_token or id_token is illegal, it returns the following error message

{
  code: 400,
  message: 'id_token 不合法',
}

{
  code: 400,
  message: 'access_token 不合法',
}

¶ Online verification OAuth2 AccessToken

Interface Description: You can verify whether access_token or refresh_token is valid.
Interface Endpoint:POST https://<your applicaiton name>;.Authing.cn/oauth/token/introspection
Request header:

Parameter	Types of	Is it required	Description
Content-Type	string	Yes	application/x-www-form-urlencoded
Authorization	string	no	Is required if: In the console application configuration details, "Configuring OAuth2.0 identity provider" tab, the authentication method is set to verify token client_secret_basic. In the form of: Basic base64 (Application ID + ':' + Application Secret)

Request parameters:

Parameter	Types of	Is it required	Description
token	string	Yes	The token value to be checked.
token_type_hint	string	Yes	The token type to be checked, the optional value is access_token
client_id	string	no	Application ID, it is required when configuring the verification token authentication method as client_secret_post and none in the console application configuration details, in the "Configure OAuth2.0 Identity Provider" tab.
client_secret	string	no	Applicaiton Secret, it is required when the authentication method of the withdrawal token is configured as client_secret_post In the console application configuration details, in the "Configure OAuth2.0 Identity Provider" tab

Return data:

When the token is valid, the following content will be returned

{
  "active": true,
  "sub": "5dc10851ebafee30ce3fd5e9",
  "client_id": "5cded22b4efab31716fa665f",
  "exp": 1602423020,
  "iat": 1602419420,
  "iss": "https://core.Authing.cn/oauth",
  "jti": "SaPg48dbO66T77xkT8wy0",
  "scope": "user",
  "token_type": "Bearer"
}

When the token is invalid (expired, error, withdrawn), the following content will be returned

{
  "active": false
}

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