tests: e2e

[revolunet]

Testing e2e encryption following #252 #253 using e2esdk

This PoC demonstrates :

• signup+login to e2esdk to fetch keys
• create a document and an associated keychain
• encrypt document content on write
• decrypt document content on read

Todo :

• share with some user
• cleanify
• use some OIDC to authenticate the user id (webhook?)

The e2e server itself is hosted independently for the demo.

Big up @RaitoBezarius for the huge help 💪

[RaitoBezarius]

Basic workflow is working now!

[revolunet]

The document on S3: