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oidc-provider API documentation

This module to be extended and configured in various ways to fit a variety of use cases. You will have to configure your instance with how to find your user accounts, where to store and retrieve persisted data from and where your end-user interactions happen. The example application is a good starting point to get an idea of what you should provide.

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Table of Contents

Basic configuration example

import Provider from 'oidc-provider'
const configuration = {
  // ... see the available options in Configuration options section
  clients: [
    {
      client_id: 'foo',
      client_secret: 'bar',
      redirect_uris: ['http://lvh.me:8080/cb'],
      // + other client properties
    },
  ],
  // ...
}

const oidc = new Provider('http://localhost:3000', configuration)

// express/nodejs style application callback (req, res, next) for use with express apps, see /examples/express.js
oidc.callback()

// koa application for use with koa apps, see /examples/koa.js
oidc.app

// or just expose a server standalone, see /examples/standalone.js
const server = oidc.listen(3000, () => {
  console.log(
    'oidc-provider listening on port 3000, check http://localhost:3000/.well-known/openid-configuration',
  )
})

Accounts

This module needs to be able to find an account and once found the account needs to have an accountId property as well as claims() function returning an object with claims that correspond to the claims your issuer supports. Tell oidc-provider how to find your account by an ID. #claims() can also return a Promise later resolved / rejected.

const oidc = new Provider('http://localhost:3000', {
  async findAccount(ctx, id) {
    return {
      accountId: id,
      async claims(use, scope) {
        return { sub: id }
      },
    }
  },
})

User flows

Since oidc-provider only comes with feature-less views and interaction handlers it is up to you to fill those in, here is how this module allows you to do so:

When oidc-provider cannot fulfill the authorization request for any of the possible reasons (missing user session, requested ACR not fulfilled, prompt requested, ...) it will resolve the interactions.url helper function and redirect the User-Agent to that URL. Before doing so it will save a short-lived "interaction session" and dump its identifier into a cookie scoped to the resolved interaction path.

This interaction session contains:

  • details of the interaction that is required
  • all authorization request parameters
  • current end-user session account ID should there be one
  • the URL to redirect the user to once interaction is finished

oidc-provider expects that you resolve the prompt interaction and then redirect the User-Agent back with the results.

Once the required interactions are finished you are expected to redirect back to the authorization endpoint, affixed by the uid of the interaction session and the interaction results stored in the interaction session object.

The Provider instance comes with helpers that aid with getting interaction details as well as packing the results. See them used in the in-repo examples.

#provider.interactionDetails(req, res)

// with express
expressApp.get('/interaction/:uid', async (req, res) => {
  const details = await provider.interactionDetails(req, res)
  // ...
})

// with koa
router.get('/interaction/:uid', async (ctx, next) => {
  const details = await provider.interactionDetails(ctx.req, ctx.res)
  // ...
})

#provider.interactionFinished(req, res, result)

// with express
expressApp.post('/interaction/:uid/login', async (req, res) => {
  return provider.interactionFinished(req, res, result); // result object below
});

// with koa
router.post('/interaction/:uid', async (ctx, next) => {
  return provider.interactionFinished(ctx.req, ctx.res, result); // result object below
});

// result should be an object with some or all the following properties
{
  // authentication/login prompt got resolved, omit if no authentication happened, i.e. the user
  // cancelled
  login: {
    accountId: string, // logged-in account id
    acr: string, // acr value for the authentication
    amr: string[], // amr values for the authentication
    remember: boolean, // true if authorization server should use a persistent cookie rather than a session one, defaults to true
    ts: number, // unix timestamp of the authentication, defaults to now()
  },

  // consent was given by the user to the client for this session
  consent: {
    grantId: string, // the identifer of Grant object you saved during the interaction, resolved by Grant.prototype.save()
  },

  ['custom prompt name resolved']: {},
}

// optionally, interactions can be primaturely exited with a an error by providing a result
// object as follow:
{
  // an error field used as error code indicating a failure during the interaction
  error: 'access_denied',

  // an optional description for this error
  error_description: 'Insufficient permissions: scope out of reach for this Account',
}

#provider.interactionResult Unlike #provider.interactionFinished authorization request resume uri is returned instead of immediate http redirect.

// with express
expressApp.post('/interaction/:uid/login', async (req, res) => {
  const redirectTo = await provider.interactionResult(req, res, result)

  res.send({ redirectTo })
})

// with koa
router.post('/interaction/:uid', async (ctx, next) => {
  const redirectTo = await provider.interactionResult(ctx.req, ctx.res, result)

  ctx.body = { redirectTo }
})

Custom Grant Types

oidc-provider comes with the basic grants implemented, but you can register your own grant types, for example to implement an OAuth 2.0 Token Exchange. You can check the standard grant factories here.

const parameters = [
  'audience',
  'resource',
  'scope',
  'requested_token_type',
  'subject_token',
  'subject_token_type',
  'actor_token',
  'actor_token_type',
]
const allowedDuplicateParameters = ['audience', 'resource']
const grantType = 'urn:ietf:params:oauth:grant-type:token-exchange'

async function tokenExchangeHandler(ctx, next) {
  // ctx.oidc.params holds the parsed parameters
  // ctx.oidc.client has the authenticated client
  // your grant implementation
  // see /lib/actions/grants for references on how to instantiate and issue tokens
}

provider.registerGrantType(
  grantType,
  tokenExchangeHandler,
  parameters,
  allowedDuplicateParameters,
)

Registering module middlewares (helmet, ip-filters, rate-limiters, etc)

When using provider.app or provider.callback() as a mounted application in your own koa or express stack just follow the respective module's documentation. However, when using the provider.app Koa instance directly to register i.e. koa-helmet you must push the middleware in front of oidc-provider in the middleware stack.

import helmet from 'koa-helmet'

// Correct, pushes koa-helmet at the end of the middleware stack but BEFORE oidc-provider.
provider.use(helmet())

// Incorrect, pushes koa-helmet at the end of the middleware stack AFTER oidc-provider, not being
// executed when errors are encountered or during actions that do not "await next()".
provider.app.use(helmet())

Pre- and post-middlewares

You can push custom middleware to be executed before and after oidc-provider.

provider.use(async (ctx, next) => {
  /** pre-processing
   * you may target a specific action here by matching `ctx.path`
   */
  console.log('pre middleware', ctx.method, ctx.path)

  await next()
  /** post-processing
   * since internal route matching was already executed you may target a specific action here
   * checking `ctx.oidc.route`, the unique route names used are
   *
   * `authorization`
   * `backchannel_authentication`
   * `client_delete`
   * `client_update`
   * `client`
   * `code_verification`
   * `cors.device_authorization`
   * `cors.discovery`
   * `cors.introspection`
   * `cors.jwks`
   * `cors.pushed_authorization_request`
   * `cors.revocation`
   * `cors.token`
   * `cors.userinfo`
   * `device_authorization`
   * `device_resume`
   * `discovery`
   * `end_session_confirm`
   * `end_session_success`
   * `end_session`
   * `introspection`
   * `jwks`
   * `pushed_authorization_request`
   * `registration`
   * `resume`
   * `revocation`
   * `token`
   * `userinfo`
   */
  console.log('post middleware', ctx.method, ctx.oidc.route)
})

Mounting oidc-provider

The following snippets show how a Provider instance can be mounted to existing applications with a path prefix /oidc.

Note: if you mount oidc-provider to a path it's likely you will have to also update the interactions.url configuration to reflect the new path.

to a connect application

// assumes connect ^3.0.0
connectApp.use('/oidc', oidc.callback())

to a fastify application

// assumes fastify ^4.0.0
const fastify = new Fastify()
await fastify.register(require('@fastify/middie'))
// or
// await app.register(require('@fastify/express'));
fastify.use('/oidc', oidc.callback())

to a hapi application

// assumes @hapi/hapi ^21.0.0
const callback = oidc.callback()
hapiApp.route({
  path: `/oidc/{any*}`,
  method: '*',
  config: { payload: { output: 'stream', parse: false } },
  async handler({ raw: { req, res } }, h) {
    req.originalUrl = req.url
    req.url = req.url.replace('/oidc', '')

    callback(req, res)
    await once(res, 'finish')

    req.url = req.url.replace('/', '/oidc')
    delete req.originalUrl

    return res.writableEnded ? h.abandon : h.continue
  },
})

to a nest application

// assumes NestJS ^7.0.0
import { Controller, All, Req, Res } from '@nestjs/common'
import { Request, Response } from 'express'
const callback = oidc.callback()
@Controller('oidc')
export class OidcController {
  @All('/*')
  public mountedOidc(@Req() req: Request, @Res() res: Response): void {
    req.url = req.originalUrl.replace('/oidc', '')
    return callback(req, res)
  }
}

to an express application

// assumes express ^4.0.0
expressApp.use('/oidc', oidc.callback())

to a koa application

// assumes koa ^2.0.0
// assumes koa-mount ^4.0.0
import mount from 'koa-mount'
koaApp.use(mount('/oidc', oidc.app))

Note: when the issuer identifier does not include the path prefix you should take care of rewriting your ${root}/.well-known/openid-configuration to ${root}${prefix}/.well-known/openid-configuration so that your deployment remains conform to the Discovery 1.0 specification.

Trusting TLS offloading proxies

Having a TLS offloading proxy in front of Node.js running oidc-provider is the norm. To let your downstream application know of the original protocol and ip you have to tell your app to trust x-forwarded-proto and x-forwarded-for headers commonly set by those proxies (as with any express/koa application). This is needed for the authorization server responses to be correct (e.g. to have the right https URL endpoints and keeping the right (secure) protocol).

Depending on your setup you should do the following in your downstream application code

setup example
standalone oidc-provider provider.proxy = true
oidc-provider mounted to an express application provider.proxy = true
oidc-provider mounted to a connect application provider.proxy = true
oidc-provider mounted to a koa application yourKoaApp.proxy = true
oidc-provider mounted to a fastify application provider.proxy = true
oidc-provider mounted to a hapi application provider.proxy = true
oidc-provider mounted to a nest application provider.proxy = true

It is also necessary that the web server doing the offloading also passes those headers to the downstream application. Here is a common configuration for Nginx (assuming that the downstream application is listening on 127.0.0.1:8009). Your configuration may vary, please consult your web server documentation for details.

location / {
  proxy_set_header Host $host;
  proxy_set_header X-Real-IP $remote_addr;
  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  proxy_set_header X-Forwarded-Proto $scheme;

  proxy_pass http://127.0.0.1:8009;
  proxy_redirect off;
}

Configuration options

Table of Contents

❗ marks the configuration you most likely want to take a look at.

adapter

The provided example and any new instance of oidc-provider will use the basic in-memory adapter for storing issued tokens, codes, user sessions, dynamically registered clients, etc. This is fine as long as you develop, configure and generally just play around since every time you restart your process all information will be lost. As soon as you cannot live with this limitation you will be required to provide your own custom adapter constructor for oidc-provider to use. This constructor will be called for every model accessed the first time it is needed. The API oidc-provider expects is documented here.

(Click to expand) MongoDB adapter implementation

See /example/adapters/mongodb.js

(Click to expand) Redis adapter implementation

See /example/adapters/redis.js

(Click to expand) Redis w/ ReJSON adapter implementation

See /example/adapters/redis_rejson.js

(Click to expand) Default in-memory adapter implementation

See /lib/adapters/memory_adapter.js

clients

Array of objects representing client metadata. These clients are referred to as static, they don't expire, never reload, are always available. In addition to these clients the authorization server will use your adapter's find method when a non-static client_id is encountered. If you only wish to support statically configured clients and no dynamic registration then make it so that your adapter resolves client find calls with a falsy value (e.g. return Promise.resolve()) and don't take unnecessary DB trips.
Client's metadata is validated as defined by the respective specification they've been defined in.

default value:

[]

(Click to expand) Available Metadata

application_type, client_id, client_name, client_secret, client_uri, contacts, default_acr_values, default_max_age, grant_types, id_token_signed_response_alg, initiate_login_uri, jwks, jwks_uri, logo_uri, policy_uri, post_logout_redirect_uris, redirect_uris, require_auth_time, response_types, response_modes, scope, sector_identifier_uri, subject_type, token_endpoint_auth_method, tos_uri, userinfo_signed_response_alg

The following metadata is available but may not be recognized depending on your provider's configuration.

authorization_encrypted_response_alg, authorization_encrypted_response_enc, authorization_signed_response_alg, backchannel_logout_session_required, backchannel_logout_uri, id_token_encrypted_response_alg, id_token_encrypted_response_enc, introspection_encrypted_response_alg, introspection_encrypted_response_enc, introspection_signed_response_alg, request_object_encryption_alg, request_object_encryption_enc, request_object_signing_alg, request_uris, tls_client_auth_san_dns, tls_client_auth_san_email, tls_client_auth_san_ip, tls_client_auth_san_uri, tls_client_auth_subject_dn, tls_client_certificate_bound_access_tokens, token_endpoint_auth_signing_alg, userinfo_encrypted_response_alg, userinfo_encrypted_response_enc

findAccount

Function used to load an account and retrieve its available claims. The return value should be a Promise and #claims() can return a Promise too

default value:

async function findAccount(ctx, sub, token) {
  // @param ctx - koa request context
  // @param sub {string} - account identifier (subject)
  // @param token - is a reference to the token used for which a given account is being loaded,
  //   is undefined in scenarios where claims are returned from authorization endpoint
  return {
    accountId: sub,
    // @param use {string} - can either be "id_token" or "userinfo", depending on
    //   where the specific claims are intended to be put in
    // @param scope {string} - the intended scope, while oidc-provider will mask
    //   claims depending on the scope automatically you might want to skip
    //   loading some claims from external resources or through db projection etc. based on this
    //   detail or not return them in ID Tokens but only UserInfo and so on
    // @param claims {object} - the part of the claims authorization parameter for either
    //   "id_token" or "userinfo" (depends on the "use" param)
    // @param rejected {Array[String]} - claim names that were rejected by the end-user, you might
    //   want to skip loading some claims from external resources or through db projection
    async claims(use, scope, claims, rejected) {
      return { sub };
    },
  };
}

jwks

JSON Web Key Set used by the authorization server for signing and decryption. The object must be in JWK Set format. All provided keys must be private keys.
Supported key types are:

  • RSA
  • OKP (Ed25519, Ed448, X25519, X448 sub types)
  • EC (P-256, secp256k1, P-384, and P-521 curves)

recommendation: Be sure to follow best practices for distributing private keying material and secrets for your respective target deployment environment.

recommendation: The following action order is recommended when rotating signing keys on a distributed deployment with rolling reloads in place.

  1. push new keys at the very end of the "keys" array in your JWKS, this means the keys will become available for verification should they be encountered but not yet used for signing
  2. reload all your processes
  3. move your new key to the very front of the "keys" array in your JWKS, this means the key will be used for signing after reload
  4. reload all your processes

features

Enable/disable features. Some features are still either based on draft or experimental RFCs. Enabling those will produce a warning in your console and you must be aware that breaking changes may occur between draft implementations and that those will be published as minor versions of oidc-provider. See the example below on how to acknowledge the specification is a draft (this will remove the warning log) and ensure the Provider instance will fail to instantiate if a new version of oidc-provider bundles newer version of the RFC with breaking changes in it.

(Click to expand) Acknowledging an experimental feature


new Provider('http://localhost:3000', {
  features: {
    backchannelLogout: {
      enabled: true,
    },
  },
});
// The above code produces this NOTICE
// NOTICE: The following draft features are enabled and their implemented version not acknowledged
// NOTICE:   - OpenID Connect Back-Channel Logout 1.0 - draft 06 (OIDF AB/Connect Working Group draft. URL: https://openid.net/specs/openid-connect-backchannel-1_0-06.html)
// NOTICE: Breaking changes between experimental feature updates may occur and these will be published as MINOR semver oidc-provider updates.
// NOTICE: You may disable this notice and these potentially breaking updates by acknowledging the current draft version. See https://github.com/panva/node-oidc-provider/tree/v7.3.0/docs/README.md#features
new Provider('http://localhost:3000', {
  features: {
    backchannelLogout: {
      enabled: true,
      ack: 'draft-06', // < we're acknowledging draft 06 of the RFC
    },
  },
});
// No more NOTICE, at this point if the draft implementation changed to 07 and contained no breaking
// changes, you're good to go, still no NOTICE, your code is safe to run.
// Now lets assume you upgrade oidc-provider version and it bundles draft 08 and it contains breaking
// changes
new Provider('http://localhost:3000', {
  features: {
    backchannelLogout: {
      enabled: true,
      ack: 'draft-06', // < bundled is draft-08, but we're still acknowledging draft-06
    },
  },
});
// Thrown:
// Error: An unacknowledged version of a draft feature is included in this oidc-provider version.

features.backchannelLogout

OIDC Back-Channel Logout 1.0

Enables Back-Channel Logout features.

default value:

{
  enabled: false
}

features.ciba

OIDC Client Initiated Backchannel Authentication Flow (CIBA)

Enables Core CIBA Flow, when combined with features.fapi and features.requestObjects.request enables Financial-grade API: Client Initiated Backchannel Authentication Profile - Implementer's Draft 01 as well.

default value:

{
  deliveryModes: [
    'poll'
  ],
  enabled: false,
  processLoginHint: [AsyncFunction: processLoginHint], // see expanded details below
  processLoginHintToken: [AsyncFunction: processLoginHintToken], // see expanded details below
  triggerAuthenticationDevice: [AsyncFunction: triggerAuthenticationDevice], // see expanded details below
  validateBindingMessage: [AsyncFunction: validateBindingMessage], // see expanded details below
  validateRequestContext: [AsyncFunction: validateRequestContext], // see expanded details below
  verifyUserCode: [AsyncFunction: verifyUserCode] // see expanded details below
}
(Click to expand) features.ciba options details

deliveryModes

Fine-tune the supported token delivery modes. Supported values are

  • poll
  • ping

default value:

[
  'poll'
]

processLoginHint

Helper function used to process the login_hint parameter and return the accountId value to use for processsing the request.

recommendation: Use throw new errors.InvalidRequest('validation error message') when login_hint is invalid.

recommendation: Use return undefined or when you can't determine the accountId from the login_hint.

default value:

async function processLoginHint(ctx, loginHint) {
  // @param ctx - koa request context
  // @param loginHint - string value of the login_hint parameter
  throw new Error('features.ciba.processLoginHint not implemented');
}

processLoginHintToken

Helper function used to process the login_hint_token parameter and return the accountId value to use for processsing the request.

recommendation: Use throw new errors.ExpiredLoginHintToken('validation error message') when login_hint_token is expired.

recommendation: Use throw new errors.InvalidRequest('validation error message') when login_hint_token is invalid.

recommendation: Use return undefined or when you can't determine the accountId from the login_hint.

default value:

async function processLoginHintToken(ctx, loginHintToken) {
  // @param ctx - koa request context
  // @param loginHintToken - string value of the login_hint_token parameter
  throw new Error('features.ciba.processLoginHintToken not implemented');
}

triggerAuthenticationDevice

Helper function used to trigger the authentication and authorization on end-user's Authentication Device. It is called after accepting the backchannel authentication request but before sending client back the response.
When the end-user authenticates use provider.backchannelResult() to finish the Consumption Device login process.

default value:

async function triggerAuthenticationDevice(ctx, request, account, client) {
  // @param ctx - koa request context
  // @param request - the BackchannelAuthenticationRequest instance
  // @param account - the account object retrieved by findAccount
  // @param client - the Client instance
  throw new Error('features.ciba.triggerAuthenticationDevice not implemented');
}

(Click to expand) provider.backchannelResult() method

backchannelResult is a method on the Provider prototype, it returns a Promise with no fulfillment value.

const provider = new Provider(...);
await provider.backchannelResult(...);

backchannelResult(request, result[, options]);

  • request BackchannelAuthenticationRequest - BackchannelAuthenticationRequest instance.
  • result Grant | OIDCProviderError - instance of a persisted Grant model or an OIDCProviderError (all exported by errors).
  • options.acr?: string - Authentication Context Class Reference value that identifies the Authentication Context Class that the authentication performed satisfied.
  • options.amr?: string[] - Identifiers for authentication methods used in the authentication.
  • options.authTime?: number - Time when the End-User authentication occurred.

validateBindingMessage

Helper function used to process the binding_message parameter and throw if its not following the authorization server's policy.

recommendation: Use throw new errors.InvalidBindingMessage('validation error message') when the binding_message is invalid.

recommendation: Use return undefined when a binding_message isn't required and wasn't provided.

default value:

async function validateBindingMessage(ctx, bindingMessage) {
  // @param ctx - koa request context
  // @param bindingMessage - string value of the binding_message parameter, when not provided it is undefined
  if (bindingMessage && !/^[a-zA-Z0-9-._+/!?#]{1,20}$/.exec(bindingMessage)) {
    throw new errors.InvalidBindingMessage('the binding_message value, when provided, needs to be 1 - 20 characters in length and use only a basic set of characters (matching the regex: ^[a-zA-Z0-9-._+/!?#]{1,20}$ )');
  }
}

validateRequestContext

Helper function used to process the request_context parameter and throw if its not following the authorization server's policy.

recommendation: Use throw new errors.InvalidRequest('validation error message') when the request_context is required by policy and missing or invalid.

recommendation: Use return undefined when a request_context isn't required and wasn't provided.

default value:

async function validateRequestContext(ctx, requestContext) {
  // @param ctx - koa request context
  // @param requestContext - string value of the request_context parameter, when not provided it is undefined
  throw new Error('features.ciba.validateRequestContext not implemented');
}

verifyUserCode

Helper function used to verify the user_code parameter value is present when required and verify its value.

recommendation: Use throw new errors.MissingUserCode('validation error message') when user_code should have been provided but wasn't.

recommendation: Use throw new errors.InvalidUserCode('validation error message') when the provided user_code is invalid.

recommendation: Use return undefined when no user_code was provided and isn't required.

default value:

async function verifyUserCode(ctx, account, userCode) {
  // @param ctx - koa request context
  // @param account -
  // @param userCode - string value of the user_code parameter, when not provided it is undefined
  throw new Error('features.ciba.verifyUserCode not implemented');
}

features.claimsParameter

OIDC Core 1.0 - Requesting Claims using the "claims" Request Parameter

Enables the use and validations of claims parameter as described in the specification.

default value:

{
  assertClaimsParameter: [AsyncFunction: assertClaimsParameter], // see expanded details below
  enabled: false
}
(Click to expand) features.claimsParameter options details

assertClaimsParameter

Helper function used to validate the claims parameter beyond what the OpenID Connect 1.0 specification requires.

default value:

async function assertClaimsParameter(ctx, claims, client) {
  // @param ctx - koa request context
  // @param claims - parsed claims parameter
  // @param client - the Client instance
}

features.clientCredentials

RFC6749 - Client Credentials

Enables grant_type=client_credentials to be used on the token endpoint.

default value:

{
  enabled: false
}

features.dPoP

RFC9449 - OAuth 2.0 Demonstration of Proof-of-Possession at the Application Layer (DPoP)

Enables DPoP - mechanism for sender-constraining tokens via a proof-of-possession mechanism on the application level. Browser DPoP proof generation here.

default value:

{
  ack: undefined,
  allowReplay: false,
  enabled: false,
  nonceSecret: undefined,
  requireNonce: [Function: requireNonce] // see expanded details below
}
(Click to expand) features.dPoP options details

allowReplay

Controls whether DPoP Proof Replay Detection is used or not.

default value:

false

nonceSecret

A secret value used for generating server-provided DPoP nonces. Must be a 32-byte length Buffer instance when provided.

default value:

undefined

requireNonce

Function used to determine whether a DPoP nonce is required or not.

default value:

function requireNonce(ctx) {
  return false;
}

features.devInteractions

Development-ONLY out of the box interaction views bundled with the library allow you to skip the boring frontend part while experimenting with oidc-provider. Enter any username (will be used as sub claim value) and any password to proceed.
Be sure to disable and replace this feature with your actual frontend flows and End-User authentication flows as soon as possible. These views are not meant to ever be seen by actual users.

default value:

{
  enabled: true
}

features.deviceFlow

RFC8628 - OAuth 2.0 Device Authorization Grant (Device Flow)

Enables Device Authorization Grant

default value:

{
  charset: 'base-20',
  deviceInfo: [Function: deviceInfo], // see expanded details below
  enabled: false,
  mask: '****-****',
  successSource: [AsyncFunction: successSource], // see expanded details below
  userCodeConfirmSource: [AsyncFunction: userCodeConfirmSource], // see expanded details below
  userCodeInputSource: [AsyncFunction: userCodeInputSource] // see expanded details below
}
(Click to expand) features.deviceFlow options details

charset

alias for a character set of the generated user codes. Supported values are

  • base-20 uses BCDFGHJKLMNPQRSTVWXZ
  • digits uses 0123456789

default value:

'base-20'

deviceInfo

Function used to extract details from the device authorization endpoint request. This is then available during the end-user confirm screen and is supposed to aid the user confirm that the particular authorization initiated by the user from a device in their possession.

default value:

function deviceInfo(ctx) {
  return {
    ip: ctx.ip,
    ua: ctx.get('user-agent'),
  };
}

mask

a string used as a template for the generated user codes, * characters will be replaced by random chars from the charset, -(dash) and (space) characters may be included for readability. See the RFC for details about minimal recommended entropy.

default value:

'****-****'

successSource

HTML source rendered when device code feature renders a success page for the User-Agent.

default value:

async function successSource(ctx) {
  // @param ctx - koa request context
  const {
    clientId, clientName, clientUri, initiateLoginUri, logoUri, policyUri, tosUri,
  } = ctx.oidc.client;
  ctx.body = `<!DOCTYPE html>
    <html>
    <head>
      <title>Sign-in Success</title>
      <style>/* css and html classes omitted for brevity, see lib/helpers/defaults.js */</style>
    </head>
    <body>
      <div>
        <h1>Sign-in Success</h1>
        <p>Your sign-in ${clientName ? `with ${clientName}` : ''} was successful, you can now close this page.</p>
      </div>
    </body>
    </html>`;
}

userCodeConfirmSource

HTML source rendered when device code feature renders an a confirmation prompt for ther User-Agent.

default value:

async function userCodeConfirmSource(ctx, form, client, deviceInfo, userCode) {
  // @param ctx - koa request context
  // @param form - form source (id="op.deviceConfirmForm") to be embedded in the page and
  //   submitted by the End-User.
  // @param deviceInfo - device information from the device_authorization_endpoint call
  // @param userCode - formatted user code by the configured mask
  const {
    clientId, clientName, clientUri, logoUri, policyUri, tosUri,
  } = ctx.oidc.client;
  ctx.body = `<!DOCTYPE html>
    <html>
    <head>
      <title>Device Login Confirmation</title>
      <style>/* css and html classes omitted for brevity, see lib/helpers/defaults.js */</style>
    </head>
    <body>
      <div>
        <h1>Confirm Device</h1>
        <p>
          <strong>${clientName || clientId}</strong>
          <br/><br/>
          The following code should be displayed on your device<br/><br/>
          <code>${userCode}</code>
          <br/><br/>
          <small>If you did not initiate this action, the code does not match or are unaware of such device in your possession please close this window or click abort.</small>
        </p>
        ${form}
        <button autofocus type="submit" form="op.deviceConfirmForm">Continue</button>
        <div>
          <button type="submit" form="op.deviceConfirmForm" value="yes" name="abort">[ Abort ]</button>
        </div>
      </div>
    </body>
    </html>`;
}

userCodeInputSource

HTML source rendered when device code feature renders an input prompt for the User-Agent.

default value:

async function userCodeInputSource(ctx, form, out, err) {
  // @param ctx - koa request context
  // @param form - form source (id="op.deviceInputForm") to be embedded in the page and submitted
  //   by the End-User.
  // @param out - if an error is returned the out object contains details that are fit to be
  //   rendered, i.e. does not include internal error messages
  // @param err - error object with an optional userCode property passed when the form is being
  //   re-rendered due to code missing/invalid/expired
  let msg;
  if (err && (err.userCode || err.name === 'NoCodeError')) {
    msg = '<p>The code you entered is incorrect. Try again</p>';
  } else if (err && err.name === 'AbortedError') {
    msg = '<p>The Sign-in request was interrupted</p>';
  } else if (err) {
    msg = '<p>There was an error processing your request</p>';
  } else {
    msg = '<p>Enter the code displayed on your device</p>';
  }
  ctx.body = `<!DOCTYPE html>
    <html>
    <head>
      <title>Sign-in</title>
      <style>/* css and html classes omitted for brevity, see lib/helpers/defaults.js */</style>
    </head>
    <body>
      <div>
        <h1>Sign-in</h1>
        ${msg}
        ${form}
        <button type="submit" form="op.deviceInputForm">Continue</button>
      </div>
    </body>
    </html>`;
}

features.encryption

Enables encryption features such as receiving encrypted UserInfo responses, encrypted ID Tokens and allow receiving encrypted Request Objects.

default value:

{
  enabled: false
}

features.fapi

Financial-grade API Security Profile (FAPI)

Enables extra Authorization Server behaviours defined in FAPI that cannot be achieved by other configuration options.

default value:

{
  enabled: false,
  profile: undefined
}
(Click to expand) features.fapi options details

profile

The specific profile of FAPI to enable. Supported values are:

Versions marked as experimental will follow the specification's development milestones via MINOR library versions.

default value:

undefined

features.introspection

RFC7662 - OAuth 2.0 Token Introspection

Enables Token Introspection for:

  • opaque access tokens
  • refresh tokens

default value:

{
  allowedPolicy: [AsyncFunction: introspectionAllowedPolicy], // see expanded details below
  enabled: false
}
(Click to expand) features.introspection options details

allowedPolicy

Helper function used to determine whether the client/RS (client argument) is allowed to introspect the given token (token argument).

default value:

async function introspectionAllowedPolicy(ctx, client, token) {
  if (client.clientAuthMethod === 'none' && token.clientId !== ctx.oidc.client.clientId) {
    return false;
  }
  return true;
}

features.jwtIntrospection

draft-ietf-oauth-jwt-introspection-response-10 - JWT Response for OAuth Token Introspection

Enables JWT responses for Token Introspection features

recommendation: Updates to draft specification versions are released as MINOR library versions, if you utilize these specification implementations consider using the tilde ~ operator in your package.json since breaking changes may be introduced as part of these version updates. Alternatively, acknowledge the version and be notified of breaking changes as part of your CI.

default value:

{
  ack: undefined,
  enabled: false
}

features.jwtResponseModes

JWT Secured Authorization Response Mode (JARM)

Enables JWT Secured Authorization Responses

default value:

{
  enabled: false
}

features.jwtUserinfo

OIDC Core 1.0 - JWT UserInfo Endpoint Responses

Enables the userinfo to optionally return signed and/or encrypted JWTs, also enables the relevant client metadata for setting up signing and/or encryption.

default value:

{
  enabled: false
}

features.mTLS

RFC8705 - OAuth 2.0 Mutual TLS Client Authentication and Certificate Bound Access Tokens (MTLS)

Enables specific features from the Mutual TLS specification. The three main features have their own specific setting in this feature's configuration object and you must provide functions for resolving some of the functions which are deployment-specific.

default value:

{
  certificateAuthorized: [Function: certificateAuthorized], // see expanded details below
  certificateBoundAccessTokens: false,
  certificateSubjectMatches: [Function: certificateSubjectMatches], // see expanded details below
  enabled: false,
  getCertificate: [Function: getCertificate], // see expanded details below
  selfSignedTlsClientAuth: false,
  tlsClientAuth: false
}
(Click to expand) features.mTLS options details

certificateAuthorized

Function used to determine if the client certificate, used in the request, is verified and comes from a trusted CA for the client. Should return true/false. Only used for tls_client_auth client authentication method.

default value:

function certificateAuthorized(ctx) {
  throw new Error('features.mTLS.certificateAuthorized function not configured');
}

certificateBoundAccessTokens

Enables section 3 & 4 Mutual TLS Client Certificate-Bound Tokens by exposing the client's tls_client_certificate_bound_access_tokens metadata property.

default value:

false

certificateSubjectMatches

Function used to determine if the client certificate, used in the request, subject matches the registered client property. Only used for tls_client_auth client authentication method.

default value:

function certificateSubjectMatches(ctx, property, expected) {
  throw new Error('features.mTLS.certificateSubjectMatches function not configured');
}

getCertificate

Function used to retrieve a crypto.X509Certificate instance, or a PEM-formatted string, representation of client certificate used in the request.

default value:

function getCertificate(ctx) {
  throw new Error('features.mTLS.getCertificate function not configured');
}

selfSignedTlsClientAuth

Enables section 2.2. Self-Signed Certificate Mutual TLS client authentication method self_signed_tls_client_auth for use in the server's clientAuthMethods configuration.

default value:

false

tlsClientAuth

Enables section 2.1. PKI Mutual TLS client authentication method tls_client_auth for use in the server's clientAuthMethods configuration.

default value:

false

features.pushedAuthorizationRequests

RFC9126 - OAuth 2.0 Pushed Authorization Requests (PAR)

Enables the use of pushed_authorization_request_endpoint defined by the Pushed Authorization Requests RFC.

default value:

{
  allowUnregisteredRedirectUris: false,
  enabled: true,
  requirePushedAuthorizationRequests: false
}
(Click to expand) features.pushedAuthorizationRequests options details

allowUnregisteredRedirectUris

Allows unregistered redirect_uri values to be used by authenticated clients using PAR that do not use a sector_identifier_uri.

default value:

false

requirePushedAuthorizationRequests

Makes the use of PAR required for all authorization requests as an authorization server policy.

default value:

false

features.registration

Dynamic Client Registration 1.0 and RFC7591 - OAuth 2.0 Dynamic Client Registration Protocol

Enables Dynamic Client Registration.

default value:

{
  enabled: false,
  idFactory: [Function: idFactory], // see expanded details below
  initialAccessToken: false,
  issueRegistrationAccessToken: true,
  policies: undefined,
  secretFactory: [AsyncFunction: secretFactory] // see expanded details below
}
(Click to expand) features.registration options details

idFactory

Function used to generate random client identifiers during dynamic client registration

default value:

function idFactory(ctx) {
  return nanoid();
}

initialAccessToken

Enables registration_endpoint to check a valid initial access token is provided as a bearer token during the registration call. Supported types are

  • string the string value will be checked as a static initial access token
  • boolean true/false to enable/disable adapter backed initial access tokens

default value:

false

(Click to expand) To add an adapter backed initial access token and retrive its value


new (provider.InitialAccessToken)({}).save().then(console.log);

issueRegistrationAccessToken

Boolean or a function used to decide whether a registration access token will be issued or not. Supported values are

  • true registration access tokens is issued
  • false registration access tokens is not issued
  • function returning true/false, true when token should be issued, false when it shouldn't

default value:

true

(Click to expand) To determine if a registration access token should be issued dynamically


// @param ctx - koa request context
async issueRegistrationAccessToken(ctx) {
  return policyImplementation(ctx)
}

policies

define registration and registration management policies applied to client properties. Policies are sync/async functions that are assigned to an Initial Access Token that run before the regular client property validations are run. Multiple policies may be assigned to an Initial Access Token and by default the same policies will transfer over to the Registration Access Token. A policy may throw / reject and it may modify the properties object.

recommendation: referenced policies must always be present when encountered on a token, an AssertionError will be thrown inside the request context if it is not, resulting in a 500 Server Error.

recommendation: the same policies will be assigned to the Registration Access Token after a successful validation. If you wish to assign different policies to the Registration Access Token

// inside your final ran policy
ctx.oidc.entities.RegistrationAccessToken.policies = ['update-policy'];

default value:

undefined

(Click to expand) To define registration and registration management policies

To define policy functions configure features.registration to be an object like so:

{
  enabled: true,
  initialAccessToken: true, // to enable adapter-backed initial access tokens
  policies: {
    'my-policy': function (ctx, properties) {
      // @param ctx - koa request context
      // @param properties - the client properties which are about to be validated
      // example of setting a default
      if (!('client_name' in properties)) {
        properties.client_name = generateRandomClientName();
      }
      // example of forcing a value
      properties.userinfo_signed_response_alg = 'RS256';
      // example of throwing a validation error
      if (someCondition(ctx, properties)) {
        throw new errors.InvalidClientMetadata('validation error message');
      }
    },
    'my-policy-2': async function (ctx, properties) {},
  },
}

An Initial Access Token with those policies being executed (one by one in that order) is created like so

new (provider.InitialAccessToken)({ policies: ['my-policy', 'my-policy-2'] }).save().then(console.log);

secretFactory

Function used to generate random client secrets during dynamic client registration

default value:

async function secretFactory(ctx) {
  const bytes = Buffer.allocUnsafe(64);
  await randomFill(bytes);
  return base64url.encodeBuffer(bytes);
}

features.registrationManagement

OAuth 2.0 Dynamic Client Registration Management Protocol

Enables Update and Delete features described in the RFC

default value:

{
  enabled: false,
  rotateRegistrationAccessToken: true
}
(Click to expand) features.registrationManagement options details

rotateRegistrationAccessToken

Enables registration access token rotation. The authorization server will discard the current Registration Access Token with a successful update and issue a new one, returning it to the client with the Registration Update Response. Supported values are

  • false registration access tokens are not rotated
  • true registration access tokens are rotated when used
  • function returning true/false, true when rotation should occur, false when it shouldn't

default value:

true

(Click to expand) function use


{
  features: {
    registrationManagement: {
      enabled: true,
      async rotateRegistrationAccessToken(ctx) {
        // return tokenRecentlyRotated(ctx.oidc.entities.RegistrationAccessToken);
        // or
        // return customClientBasedPolicy(ctx.oidc.entities.Client);
      }
    }
  }
}

features.requestObjects

OIDC Core 1.0 and JWT Secured Authorization Request (JAR) - Request Object

Enables the use and validations of the request and/or request_uri parameters.

default value:

{
  assertJwtClaimsAndHeader: [AsyncFunction: assertJwtClaimsAndHeader], // see expanded details below
  mode: 'strict',
  request: false,
  requestUri: false,
  requireSignedRequestObject: false,
  requireUriRegistration: true
}
(Click to expand) features.requestObjects options details

assertJwtClaimsAndHeader

Helper function used to validate the Request Object JWT Claims Set and Header beyond what the JAR specification requires.

default value:

async function assertJwtClaimsAndHeader(ctx, claims, header, client) {
  // @param ctx - koa request context
  // @param claims - parsed Request Object JWT Claims Set as object
  // @param header - parsed Request Object JWT Headers as object
  // @param client - the Client instance
  const fapiProfile = ctx.oidc.isFapi('1.0 Final', '1.0 ID2', '2.0');
  if (fapiProfile) {
    if (!('exp' in claims)) {
      throw new errors.InvalidRequestObject("Request Object is missing the 'exp' claim");
    }
    if (fapiProfile === '1.0 Final' || fapiProfile === '2.0') {
      if (!('aud' in claims)) {
        throw new errors.InvalidRequestObject("Request Object is missing the 'aud' claim");
      }
      if (!('nbf' in claims)) {
        throw new errors.InvalidRequestObject("Request Object is missing the 'nbf' claim");
      }
      const diff = claims.exp - claims.nbf;
      if (Math.sign(diff) !== 1 || diff > 3600) {
        throw new errors.InvalidRequestObject("Request Object 'exp' claim too far from 'nbf' claim");
      }
    }
  }
  if (ctx.oidc.route === 'backchannel_authentication') {
    for (const claim of ['exp', 'iat', 'nbf', 'jti']) {
      if (!(claim in claims)) {
        throw new errors.InvalidRequestObject(`Request Object is missing the '${claim}' claim`);
      }
    }
    if (fapiProfile) {
      const diff = claims.exp - claims.nbf;
      if (Math.sign(diff) !== 1 || diff > 3600) {
        throw new errors.InvalidRequestObject("Request Object 'exp' claim too far from 'nbf' claim");
      }
    }
  }
}

mode

defines the provider's strategy when it comes to using regular OAuth 2.0 parameters that are present. Parameters inside the Request Object are ALWAYS used, this option controls whether to combine those with the regular ones or not.
Supported values are:

  • 'lax' This is the behaviour expected by OIDC Core 1.0 - all parameters that are not present in the Resource Object are used when resolving the authorization request.
  • 'strict' (default) All parameters outside of the Request Object are ignored. For PAR, FAPI, and CIBA this value is enforced.

default value:

'strict'

request

Enables the use and validations of the request parameter.

default value:

false

requestUri

Enables the use and validations of the request_uri parameter.

default value:

false

requireSignedRequestObject

Makes the use of signed request objects required for all authorization requests as an authorization server policy.

default value:

false

requireUriRegistration

Makes request_uri pre-registration mandatory (true) or optional (false).

default value:

true

features.resourceIndicators

RFC8707 - Resource Indicators for OAuth 2.0

Enables the use of resource parameter for the authorization and token endpoints to enable issuing Access Tokens for Resource Servers (APIs).

  • Multiple resource parameters may be present during Authorization Code Flow, Device Authorization Grant, and Backchannel Authentication Requests, but only a single audience for an Access Token is permitted.
  • Authorization and Authentication Requests that result in an Access Token being issued by the Authorization Endpoint must only contain a single resource (or one must be resolved using the defaultResource helper).
  • Client Credentials grant must only contain a single resource parameter.
  • During Authorization Code / Refresh Token / Device Code / Backchannel Authentication Request exchanges, if the exchanged code/token does not include the 'openid' scope and only has a single resource then the resource parameter may be omitted - an Access Token for the single resource is returned.
  • During Authorization Code / Refresh Token / Device Code / Backchannel Authentication Request exchanges, if the exchanged code/token does not include the 'openid' scope and has multiple resources then the resource parameter must be provided (or one must be resolved using the defaultResource helper). An Access Token for the provided/resolved resource is returned.
  • (with userinfo endpoint enabled and useGrantedResource helper returning falsy) During Authorization Code / Refresh Token / Device Code exchanges, if the exchanged code/token includes the 'openid' scope and no resource parameter is present - an Access Token for the UserInfo Endpoint is returned.
  • (with userinfo endpoint enabled and useGrantedResource helper returning truthy) During Authorization Code / Refresh Token / Device Code exchanges, even if the exchanged code/token includes the 'openid' scope and only has a single resource then the resource parameter may be omitted - an Access Token for the single resource is returned.
  • (with userinfo endpoint disabled) During Authorization Code / Refresh Token / Device Code exchanges, if the exchanged code/token includes the 'openid' scope and only has a single resource then the resource parameter may be omitted - an Access Token for the single resource is returned.
  • Issued Access Tokens always only contain scopes that are defined on the respective Resource Server (returned from features.resourceIndicators.getResourceServerInfo).

default value:

{
  defaultResource: [AsyncFunction: defaultResource], // see expanded details below
  enabled: true,
  getResourceServerInfo: [AsyncFunction: getResourceServerInfo], // see expanded details below
  useGrantedResource: [AsyncFunction: useGrantedResource] // see expanded details below
}
(Click to expand) features.resourceIndicators options details

defaultResource

Function used to determine the default resource indicator for a request when none is provided by the client during the authorization request or when multiple are provided/resolved and only a single one is required during an Access Token Request.

default value:

async function defaultResource(ctx, client, oneOf) {
  // @param ctx - koa request context
  // @param client - client making the request
  // @param oneOf {string[]} - The authorization server needs to select **one** of the values provided.
  //                           Default is that the array is provided so that the request will fail.
  //                           This argument is only provided when called during
  //                           Authorization Code / Refresh Token / Device Code exchanges.
  if (oneOf) return oneOf;
  return undefined;
}

getResourceServerInfo

Function used to load information about a Resource Server (API) and check if the client is meant to request scopes for that particular resource.

recommendation: Only allow client's pre-registered resource values, to pre-register these you shall use the extraClientMetadata configuration option to define a custom metadata and use that to implement your policy using this function.

default value:

async function getResourceServerInfo(ctx, resourceIndicator, client) {
  // @param ctx - koa request context
  // @param resourceIndicator - resource indicator value either requested or resolved by the defaultResource helper.
  // @param client - client making the request
  throw new errors.InvalidTarget();
}

(Click to expand) Resource Server (API) with two scopes, an expected audience value, an Access Token TTL and a JWT Access Token Format.


{
  scope: 'api:read api:write',
  audience: 'resource-server-audience-value',
  accessTokenTTL: 2 * 60 * 60, // 2 hours
  accessTokenFormat: 'jwt',
  jwt: {
    sign: { alg: 'ES256' },
  },
}
(Click to expand) Resource Server (API) with two scopes and a symmetrically encrypted JWT Access Token Format. 
{
  scope: 'api:read api:write',
  accessTokenFormat: 'jwt',
  jwt: {
    sign: false,
    encrypt: {
      alg: 'dir',
      enc: 'A128CBC-HS256',
      key: Buffer.from('f40dd9591646bebcb9c32aed02f5e610c2d15e1d38cde0c1fe14a55cf6bfe2d9', 'hex')
    },
  }
}
(Click to expand) Resource Server Definition 
{
  // REQUIRED
  // available scope values (space-delimited string)
  scope: string,
  // OPTIONAL
  // "aud" (Audience) value to use
  // Default is the resource indicator value will be used as token audience
  audience?: string,
  // OPTIONAL
  // Issued Token TTL
  // Default is - see `ttl` configuration
  accessTokenTTL?: number,
  // Issued Token Format
  // Default is - opaque
  accessTokenFormat?: 'opaque' | 'jwt',
  // JWT Access Token Format (when accessTokenFormat is 'jwt')
  // Default is `{ sign: { alg: 'RS256' }, encrypt: false }`
  // Tokens may be signed, signed and then encrypted, or just encrypted JWTs.
  jwt?: {
    // Tokens will be signed
    sign?:
     | {
         alg?: string, // 'PS256' | 'PS384' | 'PS512' | 'ES256' | 'ES256K' | 'ES384' | 'ES512' | 'EdDSA' | 'RS256' | 'RS384' | 'RS512'
         kid?: string, // OPTIONAL `kid` to aid in signing key selection
       }
     | {
         alg: string, // 'HS256' | 'HS384' | 'HS512'
         key: crypto.KeyObject | Buffer, // shared symmetric secret to sign the JWT token with
         kid?: string, // OPTIONAL `kid` JOSE Header Parameter to put in the token's JWS Header
       },
    // Tokens will be encrypted
    encrypt?: {
      alg: string, // 'dir' | 'RSA-OAEP' | 'RSA-OAEP-256' | 'RSA-OAEP-384' | 'RSA-OAEP-512' | 'ECDH-ES' | 'ECDH-ES+A128KW' | 'ECDH-ES+A192KW' | 'ECDH-ES+A256KW' | 'A128KW' | 'A192KW' | 'A256KW' | 'A128GCMKW' | 'A192GCMKW' | 'A256GCMKW'
      enc: string, // 'A128CBC-HS256' | 'A128GCM' | 'A192CBC-HS384' | 'A192GCM' | 'A256CBC-HS512' | 'A256GCM'
      key: crypto.KeyObject | Buffer, // public key or shared symmetric secret to encrypt the JWT token with
      kid?: string, // OPTIONAL `kid` JOSE Header Parameter to put in the token's JWE Header
    }
  }
}

useGrantedResource

Function used to determine if an already granted resource indicator should be used without being explicitly requested by the client during the Token Endpoint request.

recommendation: Use return true when it's allowed for a client skip providing the "resource" parameter at the Token Endpoint.

recommendation: Use return false (default) when it's required for a client to explitly provide a "resource" parameter at the Token Endpoint or when other indication dictates an Access Token for the UserInfo Endpoint should returned.

default value:

async function useGrantedResource(ctx, model) {
  // @param ctx - koa request context
  // @param model - depending on the request's grant_type this can be either an AuthorizationCode, BackchannelAuthenticationRequest,
  //                RefreshToken, or DeviceCode model instance.
  return false;
}

features.revocation

RFC7009 - OAuth 2.0 Token Revocation

Enables Token Revocation for:

  • opaque access tokens
  • refresh tokens

default value:

{
  enabled: false
}

features.richAuthorizationRequests

RFC9396 - OAuth 2.0 Rich Authorization Requests

Enables the use of authorization_details parameter for the authorization and token endpoints to enable issuing Access Tokens with fine-grained authorization data.

default value:

{
  ack: undefined,
  enabled: false,
  rarForAuthorizationCode: [Function: rarForAuthorizationCode], // see expanded details below
  rarForCodeResponse: [Function: rarForCodeResponse], // see expanded details below
  rarForIntrospectionResponse: [Function: rarForIntrospectionResponse], // see expanded details below
  rarForRefreshTokenResponse: [Function: rarForRefreshTokenResponse], // see expanded details below
  types: {}
}
(Click to expand) features.richAuthorizationRequests options details

rarForAuthorizationCode

Function used to transform the requested and granted RAR details that are then stored in the authorization code. Return array of details or undefined.

default value:

rarForAuthorizationCode(ctx) {
  // decision points:
  // - ctx.oidc.client
  // - ctx.oidc.resourceServers
  // - ctx.oidc.params.authorization_details (unparsed authorization_details from the authorization request)
  // - ctx.oidc.grant.rar (authorization_details granted)
  throw new Error('features.richAuthorizationRequests.rarForAuthorizationCode not implemented');
}

rarForCodeResponse

Function used to transform transform the requested and granted RAR details to be returned in the Access Token Response as authorization_details as well as assigned to the issued Access Token. Return array of details or undefined.

default value:

rarForCodeResponse(ctx, resourceServer) {
  // decision points:
  // - ctx.oidc.client
  // - resourceServer
  // - ctx.oidc.authorizationCode.rar (previously returned from rarForAuthorizationCode)
  // - ctx.oidc.params.authorization_details (unparsed authorization_details from the body params in the Access Token Request)
  // - ctx.oidc.grant.rar (authorization_details granted)
  throw new Error('features.richAuthorizationRequests.rarForCodeResponse not implemented');
}

rarForIntrospectionResponse

Function used to transform transform the requested and granted RAR details to be returned in the Access Token Response as authorization_details as well as assigned to the issued Access Token. Return array of details or undefined.

default value:

rarForIntrospectionResponse(ctx, token) {
  // decision points:
  // - ctx.oidc.client
  // - token.kind
  // - token.rar
  // - ctx.oidc.grant.rar
  throw new Error('features.richAuthorizationRequests.rarForIntrospectionResponse not implemented');
}

rarForRefreshTokenResponse

Function used to transform transform the requested and granted RAR details to be returned in the Access Token Response as authorization_details as well as assigned to the issued Access Token. Return array of details or undefined.

default value:

rarForRefreshTokenResponse(ctx, resourceServer) {
  // decision points:
  // - ctx.oidc.client
  // - resourceServer
  // - ctx.oidc.refreshToken.rar (previously returned from rarForAuthorizationCode and later assigned to the refresh token)
  // - ctx.oidc.params.authorization_details (unparsed authorization_details from the body params in the Access Token Request)
  // - ctx.oidc.grant.rar
  throw new Error('features.richAuthorizationRequests.rarForRefreshTokenResponse not implemented');
}

types

Supported authorization details type identifiers.

default value:

{}

(Click to expand) https://www.rfc-editor.org/rfc/rfc9396.html#appendix-A.3


import { z } from 'zod';
const TaxData = z
  .object({
    duration_of_access: z.number().int().positive(),
    locations: z.array(z.literal('https://taxservice.govehub.no.example.com')).length(1),
    actions: z.array(z.literal('read_tax_declaration')).length(1),
    periods: z
      .array(
        z.coerce
          .number()
          .max(new Date().getFullYear() - 1)
          .min(1997)
      )
      .min(1),
    tax_payer_id: z.string().min(1),
  })
  .strict();
const configuration = {
  features: {
    richAuthorizationRequests: {
      enabled: true,
      // ...
      types: {
        tax_data: {
          validate(ctx, detail, client) {
            const { success: valid, error } = TaxData.parse(detail);
            if (!valid) {
              throw new InvalidAuthorizationDetails()
            }
          }
        }
      }
    }
  }
}

features.rpInitiatedLogout

OIDC RP-Initiated Logout 1.0

Enables RP-Initiated Logout features

default value:

{
  enabled: true,
  logoutSource: [AsyncFunction: logoutSource], // see expanded details below
  postLogoutSuccessSource: [AsyncFunction: postLogoutSuccessSource] // see expanded details below
}
(Click to expand) features.rpInitiatedLogout options details

logoutSource

HTML source rendered when RP-Initiated Logout renders a confirmation prompt for the User-Agent.

default value:

async function logoutSource(ctx, form) {
  // @param ctx - koa request context
  // @param form - form source (id="op.logoutForm") to be embedded in the page and submitted by
  //   the End-User
  ctx.body = `<!DOCTYPE html>
    <html>
    <head>
      <title>Logout Request</title>
      <style>/* css and html classes omitted for brevity, see lib/helpers/defaults.js */</style>
    </head>
    <body>
      <div>
        <h1>Do you want to sign-out from ${ctx.host}?</h1>
        ${form}
        <button autofocus type="submit" form="op.logoutForm" value="yes" name="logout">Yes, sign me out</button>
        <button type="submit" form="op.logoutForm">No, stay signed in</button>
      </div>
    </body>
    </html>`;
}

postLogoutSuccessSource

HTML source rendered when RP-Initiated Logout concludes a logout but there was no post_logout_redirect_uri provided by the client.

default value:

async function postLogoutSuccessSource(ctx) {
  // @param ctx - koa request context
  const {
    clientId, clientName, clientUri, initiateLoginUri, logoUri, policyUri, tosUri,
  } = ctx.oidc.client || {}; // client is defined if the user chose to stay logged in with the authorization server
  const display = clientName || clientId;
  ctx.body = `<!DOCTYPE html>
    <html>
    <head>
      <title>Sign-out Success</title>
      <style>/* css and html classes omitted for brevity, see lib/helpers/defaults.js */</style>
    </head>
    <body>
      <div>
        <h1>Sign-out Success</h1>
        <p>Your sign-out ${display ? `with ${display}` : ''} was successful.</p>
      </div>
    </body>
    </html>`;
}

features.userinfo

OIDC Core 1.0 - UserInfo Endpoint

Enables the userinfo endpoint. Its use requires an opaque Access Token with at least openid scope that's without a Resource Server audience.

default value:

{
  enabled: true
}

acceptQueryParamAccessTokens

Several OAuth 2.0 / OIDC profiles prohibit the use of query strings to carry access tokens. This setting either allows (true) or prohibits (false) that mechanism to be used.

default value:

false

acrValues

Array of strings, the Authentication Context Class References that the authorization server supports.

default value:

[]

allowOmittingSingleRegisteredRedirectUri

Allow omitting the redirect_uri parameter when only a single one is registered for a client.

default value:

true

assertJwtClientAuthClaimsAndHeader

Helper function used to validate the JWT Client Authentication Assertion Claims Set and Header beyond what its specification mandates.

default value:

async function assertJwtClientAuthClaimsAndHeader(ctx, claims, header, client) {
  // @param ctx - koa request context
  // @param claims - parsed JWT Client Authentication Assertion Claims Set as object
  // @param header - parsed JWT Client Authentication Assertion Headers as object
  // @param client - the Client instance
}

claims

Describes the claims that the OpenID Provider MAY be able to supply values for.
It is used to achieve two different things related to claims:

  • which additional claims are available to RPs (configure as { claimName: null })
  • which claims fall under what scope (configure { scopeName: ['claim', 'another-claim'] })

default value:

{
  acr: null,
  auth_time: null,
  iss: null,
  openid: [
    'sub'
  ],
  sid: null
}

(Click to expand) OpenID Connect 1.0 Standard Claims

See /recipes/claim_configuration.md

clientAuthMethods

Array of supported Client Authentication methods

default value:

[
  'client_secret_basic',
  'client_secret_jwt',
  'client_secret_post',
  'private_key_jwt',
  'none'
]

(Click to expand) Supported values list


[
  'none',
  'client_secret_basic', 'client_secret_post',
  'client_secret_jwt', 'private_key_jwt',
  'tls_client_auth', 'self_signed_tls_client_auth', // these methods are only available when features.mTLS is configured
]

clientBasedCORS

Function used to check whether a given CORS request should be allowed based on the request's client.

default value:

function clientBasedCORS(ctx, origin, client) {
  return false;
}

(Click to expand) Client Metadata-based CORS Origin allow list

See /recipes/client_based_origins.md

clientDefaults

Default client metadata to be assigned when unspecified by the client metadata, e.g. During Dynamic Client Registration or for statically configured clients. The default value does not represent all default values, but merely copies its subset. You can provide any used client metadata property in this object.

default value:

{
  grant_types: [
    'authorization_code'
  ],
  id_token_signed_response_alg: 'RS256',
  response_types: [
    'code'
  ],
  token_endpoint_auth_method: 'client_secret_basic'
}

(Click to expand) Changing the default client token_endpoint_auth_method

To change the default client token_endpoint_auth_method configure clientDefaults to be an object like so:

{
  token_endpoint_auth_method: 'client_secret_post'
}
(Click to expand) Changing the default client response type to `code id_token`

To change the default client response_types configure clientDefaults to be an object like so:

{
  response_types: ['code id_token'],
  grant_types: ['authorization_code', 'implicit'],
}

clockTolerance

A Number value (in seconds) describing the allowed system clock skew for validating client-provided JWTs, e.g. Request Objects, DPoP Proofs and otherwise comparing timestamps

recommendation: Only set this to a reasonable value when needed to cover server-side client and oidc-provider server clock skew.

default value:

15

conformIdTokenClaims

ID Token only contains End-User claims when the requested response_type is id_token

OIDC Core 1.0 - Requesting Claims using Scope Values defines that claims requested using the scope parameter are only returned from the UserInfo Endpoint unless the response_type is id_token.
Despite of this configuration the ID Token always includes claims requested using the scope parameter when the userinfo endpoint is disabled, or when issuing an Access Token not applicable for access to the userinfo endpoint.

default value:

true

cookies

Options for the cookie module used to keep track of various User-Agent states. The options maxAge and expires are ignored. Use ttl.Session and ttl.Interaction to configure the ttl and in turn the cookie expiration values for Session and Interaction models.

cookies.keys

Keygrip Signing keys used for cookie signing to prevent tampering.

recommendation: Rotate regularly (by prepending new keys) with a reasonable interval and keep a reasonable history of keys to allow for returning user session cookies to still be valid and re-signed

default value:

[]

cookies.long

Options for long-term cookies

recommendation: set cookies.keys and cookies.long.signed = true

default value:

{
  httpOnly: true,
  sameSite: 'none'
}

cookies.names

Cookie names used to store and transfer various states.

default value:

{
  interaction: '_interaction',
  resume: '_interaction_resume',
  session: '_session'
}

cookies.short

Options for short-term cookies

recommendation: set cookies.keys and cookies.short.signed = true

default value:

{
  httpOnly: true,
  sameSite: 'lax'
}

discovery

Pass additional properties to this object to extend the discovery document

default value:

{
  claim_types_supported: [
    'normal'
  ],
  claims_locales_supported: undefined,
  display_values_supported: undefined,
  op_policy_uri: undefined,
  op_tos_uri: undefined,
  service_documentation: undefined,
  ui_locales_supported: undefined
}

expiresWithSession

Function used to decide whether the given authorization code, device code, or authorization-endpoint returned opaque access token be bound to the user session. This will be applied to all opaque tokens issued from the authorization code, device code, or subsequent refresh token use in the future. When artifacts are session-bound their originating session will be loaded by its uid every time they are encountered. Session bound artefacts will effectively get revoked if the end-user logs out.

default value:

async function expiresWithSession(ctx, code) {
  return !code.scopes.has('offline_access');
}

extraClientMetadata

Allows for custom client metadata to be defined, validated, manipulated as well as for existing property validations to be extended. Existing properties are snakeCased on a Client instance (e.g. client.redirectUris), new properties (defined by this configuration) will be available with their names verbatim (e.g. client['urn:example:client:my-property'])

extraClientMetadata.properties

Array of property names that clients will be allowed to have defined.

default value:

[]

extraClientMetadata.validator

validator function that will be executed in order once for every property defined in extraClientMetadata.properties, regardless of its value or presence on the client metadata passed in. Must be synchronous, async validators or functions returning Promise will be rejected during runtime. To modify the current client metadata values (for current key or any other) just modify the passed in metadata argument.

default value:

function extraClientMetadataValidator(ctx, key, value, metadata) {
  // @param ctx - koa request context (only provided when a client is being constructed during
  //              Client Registration Request or Client Update Request
  // @param key - the client metadata property name
  // @param value - the property value
  // @param metadata - the current accumulated client metadata
  // @param ctx - koa request context (only provided when a client is being constructed during
  //              Client Registration Request or Client Update Request
  // validations for key, value, other related metadata
  // throw new errors.InvalidClientMetadata() to reject the client metadata
  // metadata[key] = value; to (re)assign metadata values
  // return not necessary, metadata is already a reference
}

extraParams

Pass an iterable object (i.e. Array or Set of strings) to extend the parameters recognised by the authorization, device authorization, backchannel authentication, and pushed authorization request endpoints. These parameters are then available in ctx.oidc.params as well as passed to interaction session details.

This may also be a plain object with string properties representing parameter names and values being either a function or async function to validate said parameter value. These validators are executed regardless of the parameters' presence or value such that this can be used to validate presence of custom parameters as well as to assign default values for them. If the value is null or undefined the parameter is added without a validator. Note that these validators execute near the very end of the request's validation process and changes to (such as assigning default values) other parameters will not trigger any re-validation of the whole request again.

default value:

[]

(Click to expand) registering an extra origin parameter with its validator


import { errors } from 'oidc-provider';
const extraParams = {
  async origin(ctx, value, client) {
    // @param ctx - koa request context
    // @param value - the `origin` parameter value (string or undefined)
    // @param client - client making the request
    if (hasDefaultOrigin(client)) {
      // assign default
      ctx.oidc.params.origin ||= value ||= getDefaultOrigin(client);
    }
    if (!value && requiresOrigin(ctx, client)) {
      // reject when missing but required
      throw new errors.InvalidRequest('"origin" is required for this request')
    }
    if (!allowedOrigin(value, client)) {
      // reject when not allowed
      throw new errors.InvalidRequest('requested "origin" is not allowed for this client')
    }
  }
}

extraTokenClaims

Function used to add additional claims to an Access Token when it is being issued. For opaque Access Tokens these claims will be stored in your storage under the extra property and returned by introspection as top level claims. For jwt Access Tokens these will be top level claims. Returned claims will not overwrite pre-existing top level claims.

default value:

async function extraTokenClaims(ctx, token) {
  return undefined;
}

(Click to expand) To add an arbitrary claim to an Access Token


{
  async extraTokenClaims(ctx, token) {
    return {
      'urn:idp:example:foo': 'bar',
    };
  }
}

formats.bitsOfOpaqueRandomness

The value should be an integer (or a function returning an integer) and the resulting opaque token length is equal to Math.ceil(i / Math.log2(n)) where n is the number of symbols in the used alphabet, 64 in our case.

default value:

256

(Click to expand) To have e.g. Refresh Tokens values longer than Access Tokens.


function bitsOfOpaqueRandomness(ctx, token) {
  if (token.kind === 'RefreshToken') {
    return 384;
  }
  return 256;
}

formats.customizers

Customizer functions used before issuing a structured Access Token.

default value:

{
  jwt: undefined
}

(Click to expand) To push additional headers and payload claims to a jwt format Access Token


{
  customizers: {
    async jwt(ctx, token, jwt) {
      jwt.header = { foo: 'bar' };
      jwt.payload.foo = 'bar';
    }
  }
}

httpOptions

Function called whenever calls to an external HTTP(S) resource are being made. You can change the request timeout through the signal option, the request agent used, the user-agent string used for the user-agent HTTP header, as well as the dnsLookup resolver function.

default value:

function httpOptions(url) {
  return {
    signal: undefined, // defaults to AbortSignal.timeout(2500)
    agent: undefined, // defaults to node's global agents (https.globalAgent or http.globalAgent)
    dnsLookup: undefined, // defaults to `dns.lookup()` (https://nodejs.org/api/dns.html#dnslookuphostname-options-callback)
    'user-agent': undefined, // defaults to not sending the user-agent HTTP header
  };
}

(Click to expand) To change the request's timeout

To change all request's timeout configure the httpOptions as a function like so:

 {
   httpOptions(url) {
     return { signal: AbortSignal.timeout(5000) };
   }
 }

interactions

Holds the configuration for interaction policy and a URL to send end-users to when the policy decides to require interaction.

interactions.policy

structure of Prompts and their checks formed by Prompt and Check class instances. The default you can get a fresh instance for and the classes are available under Provider.interactionPolicy.

default value:

[
/* LOGIN PROMPT */
new Prompt(
  { name: 'login', requestable: true },

  (ctx) => {
    const { oidc } = ctx;

    return {
      ...(oidc.params.max_age === undefined ? undefined : { max_age: oidc.params.max_age }),
      ...(oidc.params.login_hint === undefined
        ? undefined
        : { login_hint: oidc.params.login_hint }),
      ...(oidc.params.id_token_hint === undefined
        ? undefined
        : { id_token_hint: oidc.params.id_token_hint }),
    };
  },

  new Check('no_session', 'End-User authentication is required', (ctx) => {
    const { oidc } = ctx;
    if (oidc.session.accountId) {
      return Check.NO_NEED_TO_PROMPT;
    }

    return Check.REQUEST_PROMPT;
  }),

  new Check('max_age', 'End-User authentication could not be obtained', (ctx) => {
    const { oidc } = ctx;
    if (oidc.params.max_age === undefined) {
      return Check.NO_NEED_TO_PROMPT;
    }

    if (!oidc.session.accountId) {
      return Check.REQUEST_PROMPT;
    }

    if (oidc.session.past(oidc.params.max_age) && (!ctx.oidc.result || !ctx.oidc.result.login)) {
      return Check.REQUEST_PROMPT;
    }

    return Check.NO_NEED_TO_PROMPT;
  }),

  new Check(
    'id_token_hint',
    'id_token_hint and authenticated subject do not match',
    async (ctx) => {
      const { oidc } = ctx;
      if (oidc.entities.IdTokenHint === undefined) {
        return Check.NO_NEED_TO_PROMPT;
      }

      const { payload } = oidc.entities.IdTokenHint;

      let sub = oidc.session.accountId;
      if (sub === undefined) {
        return Check.REQUEST_PROMPT;
      }

      if (oidc.client.subjectType === 'pairwise') {
        sub = await instance(oidc.provider).configuration('pairwiseIdentifier')(
          ctx,
          sub,
          oidc.client,
        );
      }

      if (payload.sub !== sub) {
        return Check.REQUEST_PROMPT;
      }

      return Check.NO_NEED_TO_PROMPT;
    },
  ),

  new Check(
    'claims_id_token_sub_value',
    'requested subject could not be obtained',
    async (ctx) => {
      const { oidc } = ctx;

      if (
        !oidc.claims.id_token
          || !oidc.claims.id_token.sub
          || !('value' in oidc.claims.id_token.sub)
      ) {
        return Check.NO_NEED_TO_PROMPT;
      }

      let sub = oidc.session.accountId;
      if (sub === undefined) {
        return Check.REQUEST_PROMPT;
      }

      if (oidc.client.subjectType === 'pairwise') {
        sub = await instance(oidc.provider).configuration('pairwiseIdentifier')(
          ctx,
          sub,
          oidc.client,
        );
      }

      if (oidc.claims.id_token.sub.value !== sub) {
        return Check.REQUEST_PROMPT;
      }

      return Check.NO_NEED_TO_PROMPT;
    },
    ({ oidc }) => ({ sub: oidc.claims.id_token.sub }),
  ),

  new Check(
    'essential_acrs',
    'none of the requested ACRs could not be obtained',
    (ctx) => {
      const { oidc } = ctx;
      const request = get(oidc.claims, 'id_token.acr', {});

      if (!request || !request.essential || !request.values) {
        return Check.NO_NEED_TO_PROMPT;
      }

      if (!Array.isArray(oidc.claims.id_token.acr.values)) {
        throw new errors.InvalidRequest('invalid claims.id_token.acr.values type');
      }

      if (request.values.includes(oidc.acr)) {
        return Check.NO_NEED_TO_PROMPT;
      }

      return Check.REQUEST_PROMPT;
    },
    ({ oidc }) => ({ acr: oidc.claims.id_token.acr }),
  ),

  new Check(
    'essential_acr',
    'requested ACR could not be obtained',
    (ctx) => {
      const { oidc } = ctx;
      const request = get(oidc.claims, 'id_token.acr', {});

      if (!request || !request.essential || !request.value) {
        return Check.NO_NEED_TO_PROMPT;
      }

      if (request.value === oidc.acr) {
        return Check.NO_NEED_TO_PROMPT;
      }

      return Check.REQUEST_PROMPT;
    },
    ({ oidc }) => ({ acr: oidc.claims.id_token.acr }),
  ),
)

/* CONSENT PROMPT */
new Prompt(
  { name: 'consent', requestable: true },

  new Check('native_client_prompt', 'native clients require End-User interaction', 'interaction_required', (ctx) => {
    const { oidc } = ctx;
    if (
      oidc.client.applicationType === 'native'
      && oidc.params.response_type !== 'none'
      && (!oidc.result || !('consent' in oidc.result))
    ) {
      return Check.REQUEST_PROMPT;
    }

    return Check.NO_NEED_TO_PROMPT;
  }),

  new Check('op_scopes_missing', 'requested scopes not granted', (ctx) => {
    const { oidc } = ctx;
    const encounteredScopes = new Set(oidc.grant.getOIDCScopeEncountered().split(' '));

    let missing;
    for (const scope of oidc.requestParamOIDCScopes) {
      if (!encounteredScopes.has(scope)) {
        missing ||= [];
        missing.push(scope);
      }
    }

    if (missing?.length) {
      ctx.oidc[missingOIDCScope] = missing;
      return Check.REQUEST_PROMPT;
    }

    return Check.NO_NEED_TO_PROMPT;
  }, ({ oidc }) => ({ missingOIDCScope: oidc[missingOIDCScope] })),

  new Check('op_claims_missing', 'requested claims not granted', (ctx) => {
    const { oidc } = ctx;
    const encounteredClaims = new Set(oidc.grant.getOIDCClaimsEncountered());

    let missing;
    for (const claim of oidc.requestParamClaims) {
      if (!encounteredClaims.has(claim) && !['sub', 'sid', 'auth_time', 'acr', 'amr', 'iss'].includes(claim)) {
        missing ||= [];
        missing.push(claim);
      }
    }

    if (missing?.length) {
      ctx.oidc[missingOIDCClaims] = missing;
      return Check.REQUEST_PROMPT;
    }

    return Check.NO_NEED_TO_PROMPT;
  }, ({ oidc }) => ({ missingOIDCClaims: oidc[missingOIDCClaims] })),

  // checks resource server scopes
  new Check('rs_scopes_missing', 'requested scopes not granted', (ctx) => {
    const { oidc } = ctx;

    let missing;

    for (const [indicator, resourceServer] of Object.entries(ctx.oidc.resourceServers)) {
      const encounteredScopes = new Set(oidc.grant.getResourceScopeEncountered(indicator).split(' '));
      const requestedScopes = ctx.oidc.requestParamScopes;
      const availableScopes = resourceServer.scopes;

      for (const scope of requestedScopes) {
        if (availableScopes.has(scope) && !encounteredScopes.has(scope)) {
          missing ||= {};
          missing[indicator] ||= [];
          missing[indicator].push(scope);
        }
      }
    }

    if (missing && Object.keys(missing).length) {
      ctx.oidc[missingResourceScopes] = missing;
      return Check.REQUEST_PROMPT;
    }

    return Check.NO_NEED_TO_PROMPT;
  }, ({ oidc }) => ({ missingResourceScopes: oidc[missingResourceScopes] })),

  // checks authorization_details
  new Check('rar_prompt', 'authorization_details were requested', (ctx) => {
    const { oidc } = ctx;

    if (oidc.params.authorization_details && (!oidc.result || !('consent' in oidc.result))) {
      return Check.REQUEST_PROMPT;
    }

    return Check.NO_NEED_TO_PROMPT;
  }, ({ oidc }) => ({ rar: JSON.parse(oidc.params.authorization_details) })),
)
]

(Click to expand) default interaction policy description

The default interaction policy consists of two available prompts, login and consent

  • login does the following checks:
  • no_session - checks that there's an established session, an authenticated end-user
  • max_age - processes the max_age parameter (when the session's auth_time is too old it requires login)
  • id_token_hint - processes the id_token_hint parameter (when the end-user sub differs it requires login)
  • claims_id_token_sub_value - processes the claims parameter sub (when the claims parameter requested sub differs it requires login)
  • essential_acrs - processes the claims parameter acr (when the current acr is not amongst the claims parameter essential acr.values it requires login)
  • essential_acr - processes the claims parameter acr (when the current acr is not equal to the claims parameter essential acr.value it requires login)

  • consent does the following checks:
  • native_client_prompt - native clients always require re-consent
  • op_scopes_missing - requires consent when the requested scope includes scope values previously not requested
  • op_claims_missing - requires consent when the requested claims parameter includes claims previously not requested
  • rs_scopes_missing - requires consent when the requested resource indicated scope values include scopes previously not requested

    These checks are the best practice for various privacy and security reasons.
(Click to expand) disabling default consent checks

You may be required to skip (silently accept) some of the consent checks, while it is discouraged there are valid reasons to do that, for instance in some first-party scenarios or going with pre-existing, previously granted, consents. To simply silenty "accept" first-party/resource indicated scopes or pre-agreed upon claims use the loadExistingGrant configuration helper function, in there you may just instantiate (and save!) a grant for the current clientId and accountId values.

(Click to expand) modifying the default interaction policy 
import { interactionPolicy } from 'oidc-provider';
const { Prompt, Check, base } = interactionPolicy;
const basePolicy = base()
// basePolicy.get(name) => returns a Prompt instance by its name
// basePolicy.remove(name) => removes a Prompt instance by its name
// basePolicy.add(prompt, index) => adds a Prompt instance to a specific index, default is add the prompt as the last one
// prompt.checks.get(reason) => returns a Check instance by its reason
// prompt.checks.remove(reason) => removes a Check instance by its reason
// prompt.checks.add(check, index) => adds a Check instance to a specific index, default is add the check as the last one

interactions.url

Function used to determine where to redirect User-Agent for necessary interaction, can return both absolute and relative urls.

default value:

async function interactionsUrl(ctx, interaction) {
  return `/interaction/${interaction.uid}`;
}

issueRefreshToken

Function used to decide whether a refresh token will be issued or not

default value:

async function issueRefreshToken(ctx, client, code) {
  return client.grantTypeAllowed('refresh_token') && code.scopes.has('offline_access');
}

(Click to expand) To always issue a refresh tokens ...

... If a client has the grant allowed and scope includes offline_access or the client is a public web client doing code flow. Configure issueRefreshToken like so

async issueRefreshToken(ctx, client, code) {
  if (!client.grantTypeAllowed('refresh_token')) {
    return false;
  }
  return code.scopes.has('offline_access') || (client.applicationType === 'web' && client.clientAuthMethod === 'none');
}

loadExistingGrant

Helper function used to load existing but also just in time pre-established Grants to attempt to resolve an Authorization Request with. Default: loads a grant based on the interaction result consent.grantId first, falls back to the existing grantId for the client in the current session.

default value:

async function loadExistingGrant(ctx) {
  const grantId = (ctx.oidc.result?.consent?.grantId)
    || ctx.oidc.session.grantIdFor(ctx.oidc.client.clientId);
  if (grantId) {
    return ctx.oidc.provider.Grant.find(grantId);
  }
  return undefined;
}

pairwiseIdentifier

Function used by the authorization server when resolving pairwise ID Token and Userinfo sub claim values. See OIDC Core 1.0

recommendation: Since this might be called several times in one request with the same arguments consider using memoization or otherwise caching the result based on account and client ids.

default value:

async function pairwiseIdentifier(ctx, accountId, client) {
  return crypto.createHash('sha256')
    .update(client.sectorIdentifier)
    .update(accountId)
    .update(os.hostname()) // put your own unique salt here, or implement other mechanism
    .digest('hex');
}

pkce

RFC7636 - Proof Key for Code Exchange (PKCE)

PKCE configuration such as available methods and policy check on required use of PKCE

pkce.methods

Fine-tune the supported code challenge methods. Supported values are

  • S256
  • plain

default value:

[
  'S256'
]

pkce.required

Configures if and when the authorization server requires clients to use PKCE. This helper is called whenever an authorization request lacks the code_challenge parameter. Return

  • false to allow the request to continue without PKCE
  • true to abort the request

default value:

function pkceRequired(ctx, client) {
  const fapiProfile = ctx.oidc.isFapi('2.0', '1.0 Final');
  switch (true) {
    // FAPI 2.0 as per
    // https://openid.net/specs/fapi-2_0-security-profile-ID2.html#section-5.3.1.2-2.5.1
    case fapiProfile === '2.0':
      return true;
    // FAPI 1.0 Advanced as per
    // https://openid.net/specs/openid-financial-api-part-2-1_0.html#authorization-server
    case fapiProfile === '1.0 Final' && ctx.oidc.route === 'pushed_authorization_request':
      return true;
    // All Public clients as per
    // https://datatracker.ietf.org/doc/html/draft-ietf-oauth-security-topics-22#section-2.1.1-2.1.1
    case client.clientAuthMethod === 'none':
      return true;
    // All other cases RECOMMENDED as per
    // https://datatracker.ietf.org/doc/html/draft-ietf-oauth-security-topics-22#section-2.1.1-2.2.1
    default:
      return true;
  }
}

renderError

Function used to present errors to the User-Agent

default value:

async function renderError(ctx, out, error) {
  ctx.type = 'html';
  ctx.body = `<!DOCTYPE html>
    <html>
    <head>
      <title>oops! something went wrong</title>
      <style>/* css and html classes omitted for brevity, see lib/helpers/defaults.js */</style>
    </head>
    <body>
      <div>
        <h1>oops! something went wrong</h1>
        ${Object.entries(out).map(([key, value]) => `<pre><strong>${key}</strong>: ${htmlSafe(value)}</pre>`).join('')}
      </div>
    </body>
    </html>`;
}

responseTypes

Array of response_type values that the authorization server supports. The default omits all response types that result in access tokens being issued by the authorization endpoint directly as per OAuth 2.0 Security Best Current Practice You can still enable them if you need to.

default value:

[
  'code id_token',
  'code',
  'id_token',
  'none'
]

(Click to expand) Supported values list

These are values defined in OIDC Core 1.0 and OAuth 2.0 Multiple Response Type Encoding Practices

[
  'code',
  'id_token', 'id_token token',
  'code id_token', 'code token', 'code id_token token',
  'none',
]

revokeGrantPolicy

Function called in a number of different context to determine whether an underlying Grant entry should also be revoked or not.
contexts:

  • RP-Initiated Logout
  • Refresh Token Revocation
  • Authorization Code re-use
  • Device Code re-use
  • Backchannel Authentication Request re-use
  • Rotated Refresh Token re-use

default value:

function revokeGrantPolicy(ctx) {
  return true;
}

rotateRefreshToken

Configures if and how the authorization server rotates refresh tokens after they are used. Supported values are

  • false refresh tokens are not rotated and their initial expiration date is final
  • true refresh tokens are rotated when used, current token is marked as consumed and new one is issued with new TTL, when a consumed refresh token is encountered an error is returned instead and the whole token chain (grant) is revoked
  • function returning true/false, true when rotation should occur, false when it shouldn't



    The default configuration value puts forth a sensible refresh token rotation policy
  • only allows refresh tokens to be rotated (have their TTL prolonged by issuing a new one) for one year
  • otherwise always rotate public client tokens that are not sender-constrained
  • otherwise only rotate tokens if they're being used close to their expiration (>= 70% TTL passed)

default value:

function rotateRefreshToken(ctx) {
  const { RefreshToken: refreshToken, Client: client } = ctx.oidc.entities;
  // cap the maximum amount of time a refresh token can be
  // rotated for up to 1 year, afterwards its TTL is final
  if (refreshToken.totalLifetime() >= 365.25 * 24 * 60 * 60) {
    return false;
  }
  // rotate non sender-constrained public client refresh tokens
  if (client.clientAuthMethod === 'none' && !refreshToken.isSenderConstrained()) {
    return true;
  }
  // rotate if the token is nearing expiration (it's beyond 70% of its lifetime)
  return refreshToken.ttlPercentagePassed() >= 70;
}

routes

Routing values used by the authorization server. Only provide routes starting with "/"

default value:

{
  authorization: '/auth',
  backchannel_authentication: '/backchannel',
  code_verification: '/device',
  device_authorization: '/device/auth',
  end_session: '/session/end',
  introspection: '/token/introspection',
  jwks: '/jwks',
  pushed_authorization_request: '/request',
  registration: '/reg',
  revocation: '/token/revocation',
  token: '/token',
  userinfo: '/me'
}

scopes

Array of additional scope values that the authorization server signals to support in the discovery endpoint. Only add scopes the authorization server has a corresponding resource for. Resource Server scopes don't belong here, see features.resourceIndicators for configuring those.

default value:

[
  'openid',
  'offline_access'
]

sectorIdentifierUriValidate

Function called to make a decision about whether sectorIdentifierUri of a client being loaded, registered, or updated should be fetched and its contents validated against the client metadata.

default value:

function sectorIdentifierUriValidate(client) {
  // @param client - the Client instance
  return true;
}

subjectTypes

Array of the Subject Identifier types that this authorization server supports. When only pairwise is supported it becomes the default subject_type client metadata value. Valid types are

  • public
  • pairwise

default value:

[
  'public'
]

ttl

description: Expirations for various token and session types. The value can be a number (in seconds) or a synchronous function that dynamically returns value based on the context.

recommendation: Do not set token TTLs longer then they absolutely have to be, the shorter the TTL, the better.

recommendation: Rather than setting crazy high Refresh Token TTL look into rotateRefreshToken configuration option which is set up in way that when refresh tokens are regularly used they will have their TTL refreshed (via rotation). This is inline with the OAuth 2.0 Security Best Current Practice

default value:

{
  AccessToken: function AccessTokenTTL(ctx, token, client) {
    return token.resourceServer?.accessTokenTTL || 60 * 60; // 1 hour in seconds
  },
  AuthorizationCode: 60 /* 1 minute in seconds */,
  BackchannelAuthenticationRequest: function BackchannelAuthenticationRequestTTL(ctx, request, client) {
    if (ctx?.oidc && ctx.oidc.params.requested_expiry) {
      return Math.min(10 * 60, +ctx.oidc.params.requested_expiry); // 10 minutes in seconds or requested_expiry, whichever is shorter
    }
  
    return 10 * 60; // 10 minutes in seconds
  },
  ClientCredentials: function ClientCredentialsTTL(ctx, token, client) {
    return token.resourceServer?.accessTokenTTL || 10 * 60; // 10 minutes in seconds
  },
  DeviceCode: 600 /* 10 minutes in seconds */,
  Grant: 1209600 /* 14 days in seconds */,
  IdToken: 3600 /* 1 hour in seconds */,
  Interaction: 3600 /* 1 hour in seconds */,
  RefreshToken: function RefreshTokenTTL(ctx, token, client) {
    if (
      ctx && ctx.oidc.entities.RotatedRefreshToken
      && client.applicationType === 'web'
      && client.clientAuthMethod === 'none'
      && !token.isSenderConstrained()
    ) {
      // Non-Sender Constrained SPA RefreshTokens do not have infinite expiration through rotation
      return ctx.oidc.entities.RotatedRefreshToken.remainingTTL;
    }
  
    return 14 * 24 * 60 * 60; // 14 days in seconds
  },
  Session: 1209600 /* 14 days in seconds */
}

(Click to expand) To resolve a ttl on runtime for each new token

Configure ttl for a given token type with a function like so, this must return a value, not a Promise.

{
  ttl: {
    AccessToken(ctx, token, client) {
      // return a Number (in seconds) for the given token (first argument), the associated client is
      // passed as a second argument
      // Tip: if the values are entirely client based memoize the results
      return resolveTTLfor(token, client);
    },
  },
}

enabledJWA

Fine-tune the algorithms the authorization server supports by declaring algorithm values for each respective JWA use

enabledJWA.authorizationEncryptionAlgValues

JWE "alg" Algorithm values the authorization server supports for JWT Authorization response (JARM) encryption

default value:

[
  'A128KW',
  'A256KW',
  'ECDH-ES',
  'RSA-OAEP',
  'RSA-OAEP-256',
  'dir'
]

(Click to expand) Supported values list


[
  // asymmetric RSAES based
  'RSA-OAEP', 'RSA-OAEP-256', 'RSA-OAEP-384', 'RSA-OAEP-512',
  // asymmetric ECDH-ES based
  'ECDH-ES', 'ECDH-ES+A128KW', 'ECDH-ES+A192KW', 'ECDH-ES+A256KW',
  // symmetric AES key wrapping
  'A128KW', 'A192KW', 'A256KW', 'A128GCMKW', 'A192GCMKW', 'A256GCMKW',
  // direct encryption
  'dir',
]

enabledJWA.authorizationEncryptionEncValues

JWE "enc" Content Encryption Algorithm values the authorization server supports to encrypt JWT Authorization Responses (JARM) with

default value:

[
  'A128CBC-HS256',
  'A128GCM',
  'A256CBC-HS512',
  'A256GCM'
]

(Click to expand) Supported values list


[
  'A128CBC-HS256', 'A128GCM', 'A192CBC-HS384', 'A192GCM', 'A256CBC-HS512', 'A256GCM',
]

enabledJWA.authorizationSigningAlgValues

JWS "alg" Algorithm values the authorization server supports to sign JWT Authorization Responses (JARM) with

default value:

[
  'RS256',
  'PS256',
  'ES256',
  'EdDSA'
]

(Click to expand) Supported values list


[
  'RS256', 'RS384', 'RS512',
  'PS256', 'PS384', 'PS512',
  'ES256', 'ES256K', 'ES384', 'ES512',
  'EdDSA',
  'HS256', 'HS384', 'HS512',
]

enabledJWA.clientAuthSigningAlgValues

JWS "alg" Algorithm values the authorization server supports for signed JWT Client Authentication

default value:

[
  'HS256',
  'RS256',
  'PS256',
  'ES256',
  'EdDSA'
]

(Click to expand) Supported values list


[
  'RS256', 'RS384', 'RS512',
  'PS256', 'PS384', 'PS512',
  'ES256', 'ES256K', 'ES384', 'ES512',
  'EdDSA',
  'HS256', 'HS384', 'HS512',
]

enabledJWA.dPoPSigningAlgValues

JWS "alg" Algorithm values the authorization server supports to verify signed DPoP proof JWTs with

default value:

[
  'ES256',
  'EdDSA'
]

(Click to expand) Supported values list


[
  'RS256', 'RS384', 'RS512',
  'PS256', 'PS384', 'PS512',
  'ES256', 'ES256K', 'ES384', 'ES512',
  'EdDSA',
]

enabledJWA.idTokenEncryptionAlgValues

JWE "alg" Algorithm values the authorization server supports for ID Token encryption

default value:

[
  'A128KW',
  'A256KW',
  'ECDH-ES',
  'RSA-OAEP',
  'RSA-OAEP-256',
  'dir'
]

(Click to expand) Supported values list


[
  // asymmetric RSAES based
  'RSA-OAEP', 'RSA-OAEP-256', 'RSA-OAEP-384', 'RSA-OAEP-512',
  // asymmetric ECDH-ES based
  'ECDH-ES', 'ECDH-ES+A128KW', 'ECDH-ES+A192KW', 'ECDH-ES+A256KW',
  // symmetric AES key wrapping
  'A128KW', 'A192KW', 'A256KW', 'A128GCMKW', 'A192GCMKW', 'A256GCMKW',
  // direct encryption
  'dir',
]

enabledJWA.idTokenEncryptionEncValues

JWE "enc" Content Encryption Algorithm values the authorization server supports to encrypt ID Tokens with

default value:

[
  'A128CBC-HS256',
  'A128GCM',
  'A256CBC-HS512',
  'A256GCM'
]

(Click to expand) Supported values list


[
  'A128CBC-HS256', 'A128GCM', 'A192CBC-HS384', 'A192GCM', 'A256CBC-HS512', 'A256GCM',
]

enabledJWA.idTokenSigningAlgValues

JWS "alg" Algorithm values the authorization server supports to sign ID Tokens with.

default value:

[
  'RS256',
  'PS256',
  'ES256',
  'EdDSA'
]

(Click to expand) Supported values list


[
  'RS256', 'RS384', 'RS512',
  'PS256', 'PS384', 'PS512',
  'ES256', 'ES256K', 'ES384', 'ES512',
  'EdDSA',
  'HS256', 'HS384', 'HS512',
]

enabledJWA.introspectionEncryptionAlgValues

JWE "alg" Algorithm values the authorization server supports for JWT Introspection response encryption

default value:

[
  'A128KW',
  'A256KW',
  'ECDH-ES',
  'RSA-OAEP',
  'RSA-OAEP-256',
  'dir'
]

(Click to expand) Supported values list


[
  // asymmetric RSAES based
  'RSA-OAEP', 'RSA-OAEP-256', 'RSA-OAEP-384', 'RSA-OAEP-512',
  // asymmetric ECDH-ES based
  'ECDH-ES', 'ECDH-ES+A128KW', 'ECDH-ES+A192KW', 'ECDH-ES+A256KW',
  // symmetric AES key wrapping
  'A128KW', 'A192KW', 'A256KW', 'A128GCMKW', 'A192GCMKW', 'A256GCMKW',
  // direct encryption
  'dir',
]

enabledJWA.introspectionEncryptionEncValues

JWE "enc" Content Encryption Algorithm values the authorization server supports to encrypt JWT Introspection responses with

default value:

[
  'A128CBC-HS256',
  'A128GCM',
  'A256CBC-HS512',
  'A256GCM'
]

(Click to expand) Supported values list


[
  'A128CBC-HS256', 'A128GCM', 'A192CBC-HS384', 'A192GCM', 'A256CBC-HS512', 'A256GCM',
]

enabledJWA.introspectionSigningAlgValues

JWS "alg" Algorithm values the authorization server supports to sign JWT Introspection responses with

default value:

[
  'RS256',
  'PS256',
  'ES256',
  'EdDSA'
]

(Click to expand) Supported values list


[
  'RS256', 'RS384', 'RS512',
  'PS256', 'PS384', 'PS512',
  'ES256', 'ES256K', 'ES384', 'ES512',
  'EdDSA',
  'HS256', 'HS384', 'HS512',
]

enabledJWA.requestObjectEncryptionAlgValues

JWE "alg" Algorithm values the authorization server supports to receive encrypted Request Objects (JAR) with

default value:

[
  'A128KW',
  'A256KW',
  'ECDH-ES',
  'RSA-OAEP',
  'RSA-OAEP-256',
  'dir'
]

(Click to expand) Supported values list


[
  // asymmetric RSAES based
  'RSA-OAEP', 'RSA-OAEP-256', 'RSA-OAEP-384', 'RSA-OAEP-512',
  // asymmetric ECDH-ES based
  'ECDH-ES', 'ECDH-ES+A128KW', 'ECDH-ES+A192KW', 'ECDH-ES+A256KW',
  // symmetric AES key wrapping
  'A128KW', 'A192KW', 'A256KW', 'A128GCMKW', 'A192GCMKW', 'A256GCMKW',
  // direct encryption
  'dir',
]

enabledJWA.requestObjectEncryptionEncValues

JWE "enc" Content Encryption Algorithm values the authorization server supports to decrypt Request Objects (JAR) with

default value:

[
  'A128CBC-HS256',
  'A128GCM',
  'A256CBC-HS512',
  'A256GCM'
]

(Click to expand) Supported values list


[
  'A128CBC-HS256', 'A128GCM', 'A192CBC-HS384', 'A192GCM', 'A256CBC-HS512', 'A256GCM',
]

enabledJWA.requestObjectSigningAlgValues

JWS "alg" Algorithm values the authorization server supports to receive signed Request Objects (JAR) with

default value:

[
  'HS256',
  'RS256',
  'PS256',
  'ES256',
  'EdDSA'
]

(Click to expand) Supported values list


[
  'RS256', 'RS384', 'RS512',
  'PS256', 'PS384', 'PS512',
  'ES256', 'ES256K', 'ES384', 'ES512',
  'EdDSA',
  'HS256', 'HS384', 'HS512',
]

enabledJWA.userinfoEncryptionAlgValues

JWE "alg" Algorithm values the authorization server supports for UserInfo Response encryption

default value:

[
  'A128KW',
  'A256KW',
  'ECDH-ES',
  'RSA-OAEP',
  'RSA-OAEP-256',
  'dir'
]

(Click to expand) Supported values list


[
  // asymmetric RSAES based
  'RSA-OAEP', 'RSA-OAEP-256', 'RSA-OAEP-384', 'RSA-OAEP-512',
  // asymmetric ECDH-ES based
  'ECDH-ES', 'ECDH-ES+A128KW', 'ECDH-ES+A192KW', 'ECDH-ES+A256KW',
  // symmetric AES key wrapping
  'A128KW', 'A192KW', 'A256KW', 'A128GCMKW', 'A192GCMKW', 'A256GCMKW',
  // direct encryption
  'dir',
]

enabledJWA.userinfoEncryptionEncValues

JWE "enc" Content Encryption Algorithm values the authorization server supports to encrypt UserInfo responses with

default value:

[
  'A128CBC-HS256',
  'A128GCM',
  'A256CBC-HS512',
  'A256GCM'
]

(Click to expand) Supported values list


[
  'A128CBC-HS256', 'A128GCM', 'A192CBC-HS384', 'A192GCM', 'A256CBC-HS512', 'A256GCM',
]

enabledJWA.userinfoSigningAlgValues

JWS "alg" Algorithm values the authorization server supports to sign UserInfo responses with

default value:

[
  'RS256',
  'PS256',
  'ES256',
  'EdDSA'
]

(Click to expand) Supported values list


[
  'RS256', 'RS384', 'RS512',
  'PS256', 'PS384', 'PS512',
  'ES256', 'ES256K', 'ES384', 'ES512',
  'EdDSA',
  'HS256', 'HS384', 'HS512',
]

FAQ

ID Token does not include claims other than sub

Only response types that do not end up with an access_token (so, response_type=id_token) have end-user claims other than sub in their ID Tokens. This is the Core 1.0 spec behaviour. Read it you'll see requesting claims through the scope parameter only adds these claims to userinfo unless the response_type is id_token in which case they're added there. All other response types have access to the userinfo endpoint which returns these scope-requested claims. The other option is to allow clients to request specific claims from a source they expect it in via the claims parameter.

But, if you absolutely need to have scope-requested claims in ID Tokens you can use the conformIdTokenClaims configuration option.

Why does my .well-known/openid-configuration link to http endpoints instead of https endpoints?

Your authorization server is behind a TLS terminating proxy, tell your Provider instance to trust the proxy headers. More on this in Trusting TLS offloading proxies

My client_secret with special characters is not working

You're likely using client_secret_basic client authentication and the oidc-provider is actually exhibiting conform behaviour. It's likely a bug in your client software - it's not encoding the header correctly.

client_secret_basic is not 100% basic http auth, the username and password tokens are supposed to be additionally formencoded.

A proper way of submitting client_id and client_secret using client_secret_basic is Authorization: base64(formEncode(client_id):formEncode(client_secret)) as per https://www.rfc-editor.org/rfc/rfc6749.html#section-2.3.1 incl. https://www.rfc-editor.org/rfc/rfc6749.html#appendix-B

Example:

const client_id = 'an:identifier'
const client_secret = 'some secure & non-standard secret'

// After formencoding these two tokens
const encoded_id = 'an%3Aidentifier'
const encoded_secret = 'some+secure+%26+non%2Dstandard+secret'

// Basic auth header format Authorization: Basic base64(encoded_id + ':' + encoded_secret)
// Authorization: Basic YW4lM0FpZGVudGlmaWVyOnNvbWUrc2VjdXJlKyUyNitub24lMkRzdGFuZGFyZCtzZWNyZXQ=

So essentially, your client is not submitting the client auth in a conform way and you should fix that.

I'm getting a client authentication failed error with no details

Every client is configured with one of 7 available token_endpoint_auth_method values and it must adhere to how that given method must be submitted. Submitting multiple means of authentication is also not possible. If you're an authorization server operator you're encouraged to set up listeners for errors (see events.md) and deliver them to client developers out-of-band, e.g. by logs in an admin interface.

function handleClientAuthErrors(
  { headers: { authorization }, oidc: { body, client } },
  err,
) {
  if (err.statusCode === 401 && err.message === 'invalid_client') {
    // console.log(err);
    // save error details out-of-bands for the client developers, `authorization`, `body`, `client`
    // are just some details available, you can dig in ctx object for more.
  }
}
provider.on('grant.error', handleClientAuthErrors)
provider.on('introspection.error', handleClientAuthErrors)
provider.on('revocation.error', handleClientAuthErrors)

Refresh Tokens

I'm not getting refresh_token from token_endpoint grant_type=authorization_code responses, why?

Do you support offline_access scope and consent prompt? Did the client request them in the authentication request?

Yeah, still no refresh_token

Does the client have grant_type=refresh_token configured?

Aaaah, that was it. (or one of the above if you follow Core 1.0#OfflineAccess)

The Authorization Server MAY grant Refresh Tokens in other contexts that are beyond the scope of this specification. How about that?

Yeah, yeah, see configuration

Password Grant Type, ROPC

If you need it today something's wrong!

ROPC falls beyond the scope of what the library can do magically on it's own having only accountId and the claims, it does not ask for an interface necessary to find an account by a username nor by validating the password digest. Custom implementation using the provided registerGrantType API is simple enough if you absolutely need ROPC.

How to display, on the website of the authorization server itself, if the user is signed-in or not

const ctx = provider.app.createContext(req, res)
const session = await provider.Session.get(ctx)
const signedIn = !!session.accountId

Client Credentials only clients

You're getting the redirect_uris is mandatory property error but Client Credential clients don't need redirect_uris or response_types... You're getting this error because they are required properties, but they can be empty...

{
  // ... rest of the client configuration
  redirect_uris: [],
  response_types: [],
  grant_types: ['client_credentials']
}

Resource Server only clients (e.g. for token introspection)

You're getting the redirect_uris is mandatory property error but the resource server needs none. You're getting this error because they are required properties, but they can be empty...

{
  // ... rest of the client configuration
  redirect_uris: [],
  response_types: [],
  grant_types: []
}