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Should I use different SSH keys for different services?
It’s good practice not to use the same key for different services. Keys are useful so you don’t need to type your credentials in all the time when working on a trusted PC. Instead of typing something like: ssh [email protected] I can just simply type ssh github without being prompted for credentials. ssh/config ).
Can you have multiple key pairs?
You can’t associate multiple Key Pairs to an EC2 Instance. With that said, you can create multiple users and provide them access to the instance via the SSH with Key Authentication rather than password.
Can an EC2 instance have multiple key pairs?
EC2 doesn’t support multiple Key Pairs by default. And updating Key Pairs (adding new keys, replacing existing keys, or deleting existing keys) is not supported by default. User Data allows you to deploy a bunch of Key Pairs on an EC2 instance during bootstrapping.
Can you have more than one public SSH key?
Yes you can have different ssh keys. There’s very good documentation on the GitHub Help site at Help. GitHub – Multiple SSH Keys. Essentially you will be using ssh-add to add the extra keys so that the agent can utilize them.
Can Id_rsa pub have multiple keys?
2 Answers. You can have as many keys as you desire. It’s good practice to use separate private/public key sets for different realms anyway, like one set for your personal use, one for your work, etc. Next, append the contents of your id_rsa.
Can we change key pair on EC2 instance?
Once an instance has been started, there is no way to change the keypair associated with the instance at a meta data level, but you can change what ssh key you use to connect to the instance.
Can a private key have more than one public key?
1 Answer. In practice and with respect to security, no, mathematically, yes. If you have a private key (N, D), there is algebraically an infinite number of solutions to the equation 1 = E*D (mod Phi(N)).