End to end encryption on pydio

Does it provide E2EE ?
https://pydio.com/en/docs/cells/v2/encryption
There mention about encryption on data source, but where and how keys are stored?
So, it helpful for storage provided by a third party, but I want to encrypt data on pydio instance too

Hi, no we do not provide e2ee, only at rest ( = in the storage )

But where keys are stored? Does it encrypt at rest (in the storage) by public key and decrypt on device by private key? How it secures if pydio and storage (both on one server) would be compromised?

Hi,
is still the case as I read

Full client-side encryption is still a hard one

in quite a new article Pydio security model | Pydio
And CryptoPad is working on SSO February 2023 status | CryptPad Blog

The 3rd party app S3drive supports encryption, but it does not work with Pydio Cells. It cannot decrypt files. I hope the new version will fix it.