On 11/7/24 5:06 PM, David Leadbeater wrote:
On Fri, 8 Nov 2024 at 03:16, Darren Tucker <dtucker@xxxxxxxxxxx> wrote:
On Thu, 7 Nov 2024 at 07:55, Chris Rapier <rapier@xxxxxxx> wrote:
[...]I had been using
Blake2b512 for the hashing algorithm but I want to put in a path to use
xxhash instead. Maintaining backward compatibility means I need to know
something about the remote.
Could you use the already (draft) specified sftp check-file
extension[1] for this?
It takes a comma separated list of algorithms and the server picks the
first it supports.
David
[1]: https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-extensions-00#section-3
It's possible that this could work very well. Is there a reference
implementation? If not I can still use SSH_FXP_EXTENDED as described in
the draft as I'm assuming if I send an unknown request type to the
server I'll get a null/empty/whatever response. As an aside, this
implementation would not fully meet the implementation requirements of
the draft but as I'm not sure I'll have the bandwidth to implement all
of the required hashes but It would be a reasonable basis for it.
Chris
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