video1.0<iframe src="https://www.loom.com/embed/832c6f0f9b814464b202335226d0016b" frameborder="0" width="1280" height="960" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>9601280Loomhttps://www.loom.com9601280https://cdn.loom.com/sessions/thumbnails/832c6f0f9b814464b202335226d0016b-1826f1484ee0450b.gif281.498Hello everyone, in this video, I walk you through the secure transaction app I built as part of this challenge, structured using a Turbo Monorepo. I've separated the front end and back end into web and API, and created a crypto package for shared encryption logic, ensuring clean code without duplication. For security, I've implemented envelope encryption with AES-256, generating a fresh data key for each transaction, which is encrypted with a master key stored in an environment variable. I demonstrate how submitting a transaction from the front end triggers the Fastify backend to handle the encryption flow and store the encrypted payload. I encourage you to check out the demo and see the encryption process in action.