Tag: ssh

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ssh signed git commits

git config –global gpg.format ssh
git config –global user.signingkey ~/.ssh/id_ed25519.pub
git config –global commit.gpgsign true

Hopefully that’ll result in my github commits being signed…. and when I forget how to do it …

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faster rsync (ssh cipher choice)

Perhaps the bottleneck isn’t always bandwidth – but does changing ssh cipher make any difference?

Using a derivative of :

rsync -W --delete --no-owner --no-group --no-perms \
    -e ssh \
    -arv /source/ remote@destination:/destination/path/

In unscientific tests, it looks like ssh parameters might do something when copying a 4GiB file between two random virtual machines in different data centres, but both in London.

SSH Variant Speed
-e “ssh” ~45MB/s
-e “ssh -x -T” ~44MB/s
-e “ssh -x -T -c chacha20-poly1305@openssh.com” ~42MB/s
-e “ssh -x -T -c aes128-ctr” ~47MB/s
-e “ssh -x -T -c aes256-gcm@openssh.com” ~50MB/s
-e “ssh -x -T -c aes128-gcm@openssh.com “ ~45MB/s

I’m not sure if these results are particularly insightful / useful.