Enhance sftp protocol: get SHA hash of file

[Ben Lindstrom]

On Jun 29, 2011, at 7:07 AM, Philipp Marek wrote:

>> My intention for the hash values enhancement for sftp is a deduplication
>> backup system. I would cut files into chunks with a fixed offset.
> Well, if you'd prefer a C implementation, there's 
>  http://fsvs.tigris.org/source/browse/fsvs/branches/fsvs-1.2.x/fsvs/src/checksum.c?revision=2423&view=markup
> with documentation here:
>  http://doc.fsvs-software.org/doxygen-gif/checksum_8c.html#_details

Incompatible license. =(  It would have to be something closer to BSD 2 clause to be acceptable as part of
OpenSSH.

- Ben