Access Jira Rest API

[Dor Ebert]

I am creating an application on Jira (using Forge). In addition I am creating a migration tool (Using C# & Atlassian.SDK) to migrate from Lite version to external application (that outside of Jira).

For this migration I need the user to enter his email and enter a token that generated by the admin.

From the given details I am able to create a authorization token (API token that enable access to Jira Rest Endpoints).

I am trying to think about a better solution in order for the process to be faster for the user.

I read about the consumer Key and generated private key, however I didn't find enough information.

Is there any suggestions how I can move the session from Jira to the migration tool in a smoother way that the user won't need to enter those details.