---
paths:
  - 'app/Services/**'
---

# Services

## Uploads are encrypted in the browser, never on the server
Share files are encrypted chunk by chunk in the uploader's browser (resources/js/share-uploader.js, WebCrypto) in the SEALCHK2 format and PUT to UploadChunkController, which verifies each chunk in memory and writes it once. Never add a server-side upload path that puts plaintext on disk (Livewire temp uploads, multipart spooling): PHP spools every request body to upload_tmp_dir. ShareService::createShare() exists only for tests and demo data. Send chunk bodies as a Blob, not an ArrayBuffer: Chromium uploads an ArrayBuffer about 8x slower.