How to put a password on a folder in the cloud?

Question

Information Security

We need the ability to set a password for a folder in the cloud, so that the entire cloud is accessible from the desktop application on the home and work computers and through the web interface, but one folder would only be opened by entering an additional password.
I use Yandex disk and Google drive and keep a password-protected archive there for this purpose, but it is extremely inconvenient to operate the archive as a folder.
I once stored a TrueCrypt volume in the cloud, and perhaps I will return to this solution, but running a whole program to access a folder is troublesome, and the issue of synchronizing a whole volume of several gigabytes when changing one small file in it remains open.
UPD: Thanks to your answers, I realized that it is difficult to put a password on a separate folder in the "family" Yandex disk. Started another Yandex disk. Please tell me the elementary way to connect it on different machines with a virtual disk so that each time you need to enter a password.

Answer 1

At the moment, nothing better and more convenient than EncFs, unfortunately, has not been invented.
There are security problems, but they are not significant, and no one will try to decrypt your files if they are not more expensive than the cost of decrypting them, and it is high.
There is a client for windows EncFs4Win. And there is also a more convenient solution https://sourceforge.net/projects/encfsmp/
encfsmp is currently being actively developed

Answer 2

there are no folders in the cloud, it's all - labels - pointers to files, there are no file system tools there and close
because you can't set a password if there are no tools from the cloud developer for this, this is in any box.net, and maybe somewhere in corporate versions dropboxes of all kinds

Answer 3

https://habrahabr.ru/post/209500/
https://habrahabr.ru/post/241720/
https://habrahabr.ru/post/207306/
google "webdav encryption"

Answer 4

Use webdav or samba