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ssh between systems is fine so long as it’s limited to just files like authorized_keys , config , and known_hosts . If you want two hosts to be able to access each other, each host needs its own private SSH key, which must then be added to the other host’s authorized_keys file.
Can SSH key be sent public email?
The public key is public, meaning that everybody can know it without endangering security. No problem in putting it in an email, then. The potential issue would be an active attacker modifying the email while in transit, to replace your public key with his public key.
How do I send a public key by email?
Go to Settings -> Messages -> Encryption -> Add public key -> Search in public key servers. Type the Name or email ID or Key ID of your recipient and hit enter. Then the fingerprint of the public key(s) will be displayed.
It’s in fact exactly what you need to do to allow them to identify you by your private key. The .pub in the filename id_rsa.pub indicates that it is a public key which is fine to share with anyone managing a remote machine you want to access via ssh. The corresponding private key which should not be shared is id_rsa.
Can a SSH server ignore a private key file?
ssh will simply ignore a private key file if it is accessible by others. It is possible to specify a passphrase when generating the key which will be used to encrypt the sensitive part of this file using 3DES. ~/.ssh/identity.pub ~/.ssh/id_dsa.pub ~/.ssh/id_rsa.pub Contains the public key for authentication.
Where do I Find my SSH public key?
By default your SSH public key on Unix/Linux/OS X is located in your HOME directory in .ssh/ folder in id_rsa.pub file. So you can send that file without any issues, as your private key is in id_rsa, so your credentials are not exposed.
If you want to login from the first server, then send the public key of that server’s key, the one in the machines id_rsa.pub. If you want to login using both keys, you’ll need to arrange both in the authorized_keys on the target server.