darcs repository web UI and hosting app. This is the main darcsden trunk, which also runs hub.darcs.net. (https://hub.darcs.net)
#179CBC ciphers disabled in OpenSSH 7.6
The past days I had trouble pushing to and pulling from DarcsHub. Some debugging and research revealed that OpenSSH 7.6 disabled the CBC cipher set (https://www.openssh.com/txt/release-7.6).
Darcs' error message: darcs failed: Not a repository: enum@hub.darcs.net:enum/twitbtw (The program "scp enum@hub.darcs.net:enum/twitbtw/_darcs/inventory ./darcs1957747793424238335" failed with error: "Unable to negotiate with 173.255.219.222 port 22: no matching cipher found. Their offer: aes256-cbc,aes192-cbc,aes128-cbc".)
From ssh -G: ciphers chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
Workaround for users: Manually allow aes256-cbc in ~/.ssh/config. On the long term, CTR or GCM ciphers should be implemented for DarcsDen.
- summary changed to "CBC ciphers disabled in OpenSSH 7.6"
Issue for the ssh package: https://hub.darcs.net/ganesh/ssh/issue/6
Thanks for the report. I hope ssh can be updated. I would welcome an update to https://hub.darcs.net/simon/darcshub-docs/browse/frontpage.md clarifying the situation for darcs hub users.
Update: I added CTR mode to the ssh package in my fork enum/ssh and filed a pull request https://hub.darcs.net/ganesh/ssh/issue/7
