ServiceNow OAUTH

 ServiceNOW OAUTH using JWT and HS256

https://www.servicenow.com/docs/bundle/washingtondc-platform-security/page/administer/security/task/create-jwt-endpoint.html

https://jwt.io/

It does support other parties OAUTH algorthim

https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB0859843

ServiceNow OAUTH obtain also need username and password(token will grant the permission of the user to access the API)

https://www.servicenow.com/community/developer-forum/oauth2-0-without-username-and-password/m-p/1470323

1. Endpoint - https://instanceName.service-now.com/oauth_token.do

Method - POST

Request Body Key values

Key	Value
grant_type	password
client_id	your client id
client_secret	your client secret
username	username with rest role
password	password for that user