Embedding the Marketplace

Single Sign-on via JSON Web Tokens
Single sign-on (SSO) is a mechanism that allows your site to pass information about your users to Pandium and tells Pandium that the user has been authenticated. Pandium uses that information to securely display your users’ specific integration configurations without an extra login. To provide the most seamless experience, we suggest you embed us via an iframe in your application.
A JSON Web Token (JWT) is a technique that can be used for single sign-on between your application and Pandium. 
Prerequisites
Before your site can be enabled for SSO via JWT with Pandium, you will need to reach out to the Pandium support and exchange the below:
A shared secret supplied by Pandium. This is used to sign the JWT, and helps Pandium ensure the requests come from you and you alone.
If you will be embedding a Pandium Marketplace in your application (our recommend approach), then we will also need the domain of the application that will serve as the iframe's parent. Pandium needs this for CORS purposes.
Overview
Your application will need to direct your users to a url that looks like below: https:/imp.pandium.io/<account>?tenant=<signed_jwt_token> or https:/imp.sandbox.pandium.com/<account>?tenant=<signed_jwt_token> for sandbox. Where the account will be provided to you.
With this, Pandium will take the token and display either a list of all integrations that the user can install or if only one integration is present, then the tenant configuration for that integration.
Pandium customers usually embedded this URL as an iframe in their applications or pop-out to a new tab or window.
Creating the Signed JSON Web token
You will need to build a JWT containing the users’ data in a backend service.
JWTs are made of 3 parts separated by a period (.). Each piece is base64Url encoded which then gets assembled to look like below:
<base64url-encoded header>.<base64url-encoded payload>.<baseurl-encoded signature>
Header:
Pandium current only supports the following header:
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{
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    "alg": "HS256",
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    "typ": "JWT"
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}
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The base64url-encoded version of the above is below:
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eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9
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Payload:
The JWT payload is where your application will encode the pieces of information, or claims, about your user.
The table below provides a list and descriptions of the claims your JWT should contain.
Claims
type
Required
Description
iat
string
x
Time the token was generated. The value must be the number of seconds since UNIX epoch. If this is more then 1 minute Pandium will reject the token.
jti
string
x
A unique id for the token that is used to protect against replay attacks by making sure the token is used only once.
sub
string
x
Email of the Tenant being signed in. Pandium uses this to uniquely identify the user. If the user does not exist in Pandium, it will be created.
ti
object
​
The Tenant Info Object. This object is used to pass information about the end-customer user that you need to tell Pandium about.
The table below provides a list and descriptions of the properties of the object mentioned above.
Property
Type
required
Description
udn
string
​
The user's display name
ufn
string
​
The user's full name
uem
string
​
The user's email
ili
array(string)
​
An array of installed external integrations, whose ids match the ids of the integration tiles in the Marketplace, that are currently active, and would like to be shown as such in the Marketplace.
aid
string
​
Auditable user id (if different from sub)
adn
string
​
Auditable users display name (if different from sub)
xti
object
​
A place to store extra props that may be need to power your company's marketplace experience
Sample:
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​
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{
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 "iat": 1621521641,
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 "jti": "1cfa7dbf-8110-4237-ad22-410608791b7d",
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 "ti": {
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   "udn": "Pandium Test",
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   "ufn": "Important Person",
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   "uem": "[email protected]",
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   "ili": [
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     "new-id",
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     "something-different"
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   ],
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   "aid": "",
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   "adn": "",
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   "xti": {
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     "extraProp": "extra value",
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     "extraList": [
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       "bla",
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       "listVal"
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     ]
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   }
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 },
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 "sub": "test-pandium-com"
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}
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​
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​
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Signature:
The JWT signature is produced by concatenating the Base64url encoded header with the Base64url encoded claims, and then signing using the shared secret using HMAC with SHA-256.
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HMAC-SHA256(base64url-encoded(header) + "." + base64url-encoded(payload)), <shared secret>)
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A complete example.
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eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9
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    .eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ
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    .SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c
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Contents

Single Sign-on via JSON Web Tokens

Prerequisites

Overview

Creating the Signed JSON Web token