@govtechsg/singpass-myinfo-oidc-helper
Helper for building a Relying Party to integrate with Singpass OIDC and MyInfo person basic API
Last updated a day ago by dyihoon90 .
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Singpass MyInfo OIDC helper

Use this module to build client applications that can:

  • Authenticate users via the Singpass OIDC provider
  • Retrieve user's MyInfo data via the MyInfo Person Basic API

Installation

npm i @govtechsg/singpass-myinfo-oidc-helper


MyInfo


MyInfoHelper

Helper to get a V3 MyInfo person. Because our project only requires the person basic object, we have only written getPersonBasic method. Contributions for getPerson are welcomed.

import { MyInfo } from "singpass-myinfo-oidc-helper"

MyInfo.Helper

  • constructor
Param Type Description
attributes string[] Array of user attributes to retrieve from MyInfo. For full list of attributes, see here
clientID string Your app's client ID when you onboarded with MyInfo
personBasicURL string The full URL to the MyInfo person basic endpoint. Exposed for lib user to choose between staging, prod, and any mock server
singpassEserviceID string Your app's ID when you onboarded Singpass. Used by MyInfo to check if the NRIC you are trying to retrieve MyInfo data for has recently logged into your app via Singpass
keyToDecryptJWE string Your private key to decrypt MyInfo's JWE payload. The public key has been given to MyInfo during onboarding, for them to encrypt the JWE containing Person Data
certToVerifyJWS string The public cert from MyInfo as MyInfo payloads are both encrypted with JWE, and signed with JWS
privateKeyToSignRequest string Used for signing the request to MyInfo server. Needs to be an encrypted PKCS8 private key
privateKeyPassword string the password that you used to encrypt privateKeyToSignRequest
  • getPersonBasic(uinfin: string) => MyInfo.PersonBasic - get Person Data in the shape of MyInfo.PersonBasic

MyInfoRequest

Usually not needed, for making any other custom requests to MyInfo not covered in our MyInfo helper.

  • constructor
Param Type Description
appId string Your app's client ID when you onboarded with MyInfo
privateKeyToSignRequest string Used for signing the request to MyInfo server. Needs to be an encrypted PKCS8 private key
privateKeyPassword string the password that you used to encrypt privateKeyToSignRequest
  • get(uri: string, params?: { [key: string]: any }) - make get request to the defined myinfo gov endpoint

    • params refer to the query params for the get request

Fake

MyInfo.Fake.FakeMyInfoHelper

Use getPersonBasic to get a fake MyInfo person

  • constructor
Param Type Description
attributes string[]? List of MyInfo attributes that this helper will return
  • getPersonBasic({ archetype: ProfileArchetype, marital?: string, marriagedate?: string, marriagecertno?: string, countryofmarriage?: string, occupation?: string, occupationfreeform?: string, dob?: string, }) => MyInfo.PersonBasic - get a fake person data.

  • enum MyInfo.Fake.ProfileArchetype suitably named profile archetypes to generate different types of fake MyInfo person


Singpass

Helper for integrating with Singpass OIDC

import { Singpass } from "singpass-myinfo-oidc-helper"

Singpass.OidcHelper

  • constructor
Param Type Description
authorizationUrl string The URL for Singpass /authorize endpoint
logoutUrl string The URL for Singpass /logout endpoint
tokenUrl string The URL for Singpass /token endpoint
clientID string Your app's ID when you onboarded Singpass.
clientSecret string The client secret. To be sent together with client ID to token endpoint
redirectUri string the redirect URL for Singpass to redirect to after user login. Must be whitelisted by SP during onboarding
jweDecryptKey string Private key for decrypting the JWT that wraps the token
jwsVerifyKey string Public key for verifying the JWT that wraps the token

Login

  • constructAuthorizationUrl = (state: string, nonce?: string) => string - constructs the authorization url with the necessary params, including the:

  • state (later returned in redirectUri)

  • nonce (later returned inside the JWT from token endpoint)

  • getTokens (authCode: string, axiosRequestConfig?: AxiosRequestConfig) => Promise<TokenResponse> - get back the tokens from SP token endpoint. Outputs TokenResponse, which is the input for getIdTokenPayload

  • refreshTokens (refreshToken: string, axiosRequestConfig?: AxiosRequestConfig) => Promise<TokenResponse> - get fresh tokens from SP token endpoint. Outputs TokenResponse, which is the input for getIdTokenPayload

  • getIdTokenPayload(tokens: TokenResponse) => Promise<TokenPayload> - decrypt and verify the JWT. Outputs TokenPayload, which is the input for extractNricAndUuidFromPayload

  • extractNricAndUuidFromPayload(payload: TokenPayload) => { nric: string, uuid: string } - finally, get the nric and WOG (Whole-of-government) UUID of the user from the ID Token TokenPayload

Logout Singpass SSO session

  • logoutOfSession(sessionId: string) => Promise<SessionLogoutResult>- Log user out of Singpass session, using a valid session id (that is retrieved from Singpass domain cookie)

Current Tags

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5 Versions

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