![]() ![]() Key based authentication enables the SSH server and client to compare the public key for a user name provided against the private key. The public key is what is placed on the SSH server, and may be shared without compromising the private key. If someone acquires your private key, they can sign in as you to any SSH server you have access to. The private key files are the equivalent of a password, and should stay protected under all circumstances. SSH public key authentication uses asymmetric cryptographic algorithms to generate two key files – one "private" and the other "public". Key pairs refer to the public and private key files that are used by certain authentication protocols. ![]() If you're unfamiliar with SSH key management, we strongly recommend you review NIST document IR 7966 titled "Security of Interactive and Automated Access Management Using Secure Shell (SSH)". This document provides an overview of how to use these tools on Windows to begin using key-based authentication with SSH.
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