HiddenStore option may be useful

[Thomas Blank]

Daniel Kahn Gillmor wrote:
 >
 > I think the suggestion was that "HiddenStore" would be an option on
 > the server.  That way it could be controlled centrally without asking
 > the clients to change their habits.

That's it - I not have control over the clients.

Damien Miller wrote:
 >
 > Do you think that getting a new option into sftp, and somehow getting
 > all your clients (who you don't control) to upgrade to a version that
 > supports it will be easy?

If I have to upgrade the clients (which I don't control) it will be hard 
work.
But saving the contents to a temporary filename and renaming at the end 
is a completely transparent way to the clients. They do not recognize it 
(exactly like David Leonard's firefox download).

If a would have control over the clients, you can be sure, I would 
implement it somehow like
 > upload using a temporary name and rename it once complete. Other
 > solutions include uploading a tiny
 > (one, or zero byte) marker file to indicate that a transfer is done,
 > or using a file format
 > with a verifiable checksum (zip, gzip, pgp, etc.)