Photon Key Server
The key server stores high entropy encryption keys for seedless cloud backup of bitcoin wallets and provides server side security such as rate limited PIN authentication.
To help developers get started using photon quickly, there is a development server available to test apis and use during development. Just be aware that the server instance should not be used for production purposes as data is deleted regularly.
Please review the key server api page for documentation how to use the key server REST api.
The key server is built using the serverless framework and lamdba functions and you can easily deploy your own instance to AWS for your application. The code is open source on GitHub:
GitHub - photon-sdk/photon-keyserver: 2FA server for encrypted private key backup
Photon Key Server GitHub repository