Document `occ encryption:drop-legacy-filekey`
The occ command added in nextcloud/server#38080 (released in v27) needs to be documented:
Scan the files for the legacy filekey format using RC4 and get rid of it (if master key is enabled)
Notes
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- Then return here to bring back your experience to help improve the documentation for clarity, etc. (and link back to the forum discussion in your report!)
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Cc: @come-nc
@come-nc consensus is to reword "Encrypting files increases their size by roughly 35%" to "Encryption files generate a slight overhead in size by ~1% (35% before Nextcloud X)"
and mention the command that can migrate it for some versions^^
https://docs.nextcloud.com/server/latest/admin_manual/configuration_files/encryption_configuration.html
X = v25 (nextcloud/server#32110)
Thanks a lot to everyone involved and all the efforts into documenting and updating the encryption !