Disclaimer : I am absolute noob in terms of SSH kind of stuffs.
I maded a SSH key on ConnectBot app on android.I still have password of that key.I got a private and public key.I shared public key with tildes for making accounts.Now they know me by my that key but I want to login by termux. On termux I installed openssh and tried to login it says that authentication failed.
So I just need to backup keys from connected bot and restore on termux and my PC . Will it work ? How to do it? Will making a new pair of keys using same pass and name will work?
I did not got anything regarding this on searches
You should do one private key per host. If you want access to something with a key from you phone and computer you should have one key on each. To use ssh from somewhere, from that place to your computer, gitlab, whatever, it needs the private key in the correct place. If it is a shell (like termux) it should be e.g. yoir home folder then .ssh/id_rsa. If its an app, I guess ot tells you(, but I would not give my private key to a random app). To be able to get to somewhere, like from your phone to your computer, your computer needs the public key. The cannonical place to put it is as a single line in a file ‘authorized_keys’ in the .ssh folder in your home folder.