Enhance sftp protocol: get SHA hash of file
dan at doxpara.com
Wed Jun 29 21:05:57 EST 2011
I could see various uses of this, and its not like OpenSSH doesn't already
have sha1 built in. It could also be hacked in via a command line channel,
seeking sha1sum or a perl oneliner.
On Wed, Jun 29, 2011 at 3:57 AM, Thomas Güttler
<guettli at thomas-guettler.de>wrote:
> it would be great, if the sftp protocol could be
> enhanced: get sha (or other hash value) from a file or part of a file.
> This would make it possible to run a rsync like file transfer
> on sftp.
> I would suggest a protocol like this
> Client sends to Server:
> get-supported hash-methods
> returns whitespace seperated list like md5 sha1 sha256 ....
> get-hash HASH-METHOD FILENAME STARTOFFSET BYTECOUNT
> returns: hexlified hash value (all lowercase)
> To get the hash value of the whole file: STARTOFFSET=0 and BYTECOUNT=0
> Anyone interested?
> Thomas Güttler
> openssh-unix-dev mailing list
> openssh-unix-dev at mindrot.org
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