I saw the following on
https://www.cygwin.com/ml/cygwin/2015-03/msg00477.html and I've been
having the same issue with keychain. The fix to the /usr/bin/keychain
shell script worked as shown, but I've added information about where the
fix belongs (in the script) later in this message. I suggest correcting
the indentations for the proposed fix as needed.
After updating to OpenSSH 6.8p1-1, I experienced an issue where, at
every login, keychain (in my .bash_profile) wrote a warning:
<snip>
The warning:
Can't determine fingerprint from the following line, falling back to
filename
A post
(http://newscentral.exsees.com/item/d00c4734c9eed7abe32de6a741f5a3fe-8dd4abc7f69143e4ea63672f83a77a14
[1]) to an Arch Linux forum expressed a similar report, along with a
solution, adding a case for SHA256 or MD5:
https://github.com/funtoo/keychain/blob/master/keychain.sh#L692 [2].
For clarity, that's:
* SHA256:[0-9a-zA-Z+/=]*|* MD5:[0-9a-zA-Z+/=]*)
# The new OpenSSH 6.8+ format,
# 1024 SHA256:mVPwvezndPv/ARoIadVY98vAC0g+P/5633yTC4d/wXE
/home/barney/.ssh/id_dsa (DSA)
echo "$ef_line" | cut -f2 -d' '
;;
I applied the changes to my /usr/bin/keychain, and the errors stopped.
I think this change belongs in Cygwin, too, since OpenSSH 6.8p1-1.
I applied this fix to the case statement (penultimate entry) in the
extract_fingerprints() function (around line 800) and it does seem to
work for me as well. I would recommend this be added as a permanent fix
in Cygwin's package.
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