Step 1: Retrieve credentials for third-party apps

Getting credentials

Google Oauth 2.0

Authenticate using Oauth 2.0

Authorize URL (Required): Authorize url. E.g. https://accounts.google.com/o/oauth2/v2/auth?access_type=offline&prompt=consent
Client ID (Required): Client ID
Client secret (Required): Client secret
Project ID (Required): The ID of the project that hosts the storage bucket
Scopes (Required): Granted permission. E.g. https://www.googleapis.com/auth/devstorage.read_write
Token URL (Required): Token url. E.g. https://oauth2.googleapis.com/token

Google Cloud Storage Private Key

The Google Cloud Storage component requires a username / private key pair for authentication. To create a GCP service account, follow directions on https://cloud.google.com/docs/authentication/getting-started.

Be sure to assign the user you just created with the correct permissions. To access Google Cloud Storage resources, you will need to assign either a resource specific permission, or the Cloud Storage Admin role. After creating a service account, you will have an option to create a key for the account. If you are not greeted with this option, click on the service account you just created, and navigate to the 'keys' section. Here you can click 'Add Key' This will generate a .json file with type, project_id, and a dozen other fields. Use these fields along with your GCP Project Id to create a new connection.

Client Email (Required): The email address of the client you would like to connect.
Private Key (Required): The private key of the client you would like to connect.
Project ID (Required): The ID of the project that hosts the storage bucket