Encryption chapter(s) revision(s)

[joshtrichards]

The Encryption chapter needs some love.

Note: WIP (expect this list to change/get updated as changes are made/PRs are merged/etc)

TODO:

• Add: Mention E2EE != the encryption documented in the Admin Manual Encryption chapter
• Add: Warning that E2EE not to be used with default encryption
• Fix: Old remarks about "Encrypting files increases their size by roughly 35%" isn't accurate since the base64 -> binary change
• Add context in the overview (or wherever it ends up making sense) of different ways of encrypting day / comparisons (without getting too down in the weeds) so that reader can make informed decision regarding server-side, client-side, disk encryption, etc.
• Streamline and re-organize (and expand where appropriate) the general setup process
• Get some feedback from various other relevant folks
• (probably some other things which will get added here)

After:

• Review open server-side encryption related issues here in docs
• Identify additional documentation related changes / add TODO items (or create additional follow-up Issues where deemed out of scope or not practical just yet)
• Review open server-side encryption related issues in the server repo (since many are either doc matters or a mixture of docs+implementation adjustments)

Then (will probably move the below to their own issue and revise the list after the above is completed):

• Better document legacy stuff
• Add basic info about recovery tools stuff
• Review open client-side encryption related issues here in docs
• Identify additional documentation related changes / add TODO items (or create additional follow-up Issues where deemed out of scope or not practical just yet)
• Review open client-side encryption related issues in the server repo (since many are either doc matters or a mixture of docs+implementation adjustments)
• Consider establishing an E2EE chapter/section
• See if anything from enh(README) New screenshots, setup/troubleshooting instructions end_to_end_encryption#538 should be incorporated

Out of scope but related:

• Add a setup check or warning if both encryption and end_to_end_encryption apps are enabled together (not a supported configuration)
• Encryption details section could use some love
• Consider/assess downsides (if any) to changing encryption app name from Default encryption module to Server-side encryption module to greater clarity

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• There is always room for improvement!
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Notes

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[thibaultmol]

Was about to say. The documentation seems to be stuck in 2018 or something when it comes to this topic. Felt really weird considering there are so many blog posts about the E2E features.