Ssh-keygen command will generate two files: a private key file named id_rsa and a public key file named id_rsa.pub. Ssh-keygen -m PEM -t rsa -b 4096 Understanding ssh-keygen Command in Linux The following command creates an SSH key pair using RSA encryption and a bit length of 4096: If an SSH key pair with the same name exists in the given location, those files are overwritten.
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You can specify a different location, and an optional password (passphrase) to access the private key file. By default, these files are created in the ~/.ssh directory. We are going to use the ssh-keygen command to generate SSH public and private key files. Generate a SSH key pair with ssh-keygen command When we attempt to log in to the system, the public key is transmitted to the server, and the server uses it to verify your identity. The public key is stored on the system, and the private key is stored in a secure local location. SSH keys are used to authenticate and establish an encrypted communication channel between a client and a remote machine over the internet. A good solution for both small and large infrastructure.Better authentication and authorization management.
More secure compared to passwords as it works on public-private key cryptography.Users don’t have to type the password for every new session What are the benefits of using key authentication in SSH? There is no need to protect the secrecy of the public key. Public keys can be distributed to anyone in any mechanism. A public key can be known by everyone, but the private key can be known or used only by the owner. SSH keys always come in pairs, and every pair is made up of a private key and a public key.
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