{"id":50645,"date":"2021-02-05T14:11:24","date_gmt":"2021-02-05T14:11:24","guid":{"rendered":"http:\/\/35.232.100.111\/?post_type=post&p=28110"},"modified":"2022-12-29T12:13:12","modified_gmt":"2022-12-29T12:13:12","slug":"key-based-authentication","status":"publish","type":"post","link":"https:\/\/sectona.com\/pam-101\/authentication\/key-based-authentication\/","title":{"rendered":"Key-based Authentication Method: A Prominent Alternative"},"content":{"rendered":"\t\t
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\n\t\t\t\t\t\n\t\t\t\t\t\tKey-Based Authentication\t\t\t\t\t<\/span>\n\t\t\t\t<\/h1>\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tValidating the user identity, through secret keys using cryptographic\nalgorithms\t\t\t\t\t<\/p>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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What is Key-Based Authentication?<\/h2>

A Key Based Authentication is a more secure and encrypted method of authorization that allows a user to gain access to target resources with the help of secret keys that are stored and guarded in a secure location by the end user. It is basically of two types namely SSH Key Based Authentication and Access Key Based Authentication.<\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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SSH Key-Based Authentication: –<\/h2>

This method works with SSH Key Management accounts, which are user accounts responsible for remote system administration and secure file transfer on Unix-based devices authenticated with the help of a text, password, or RSA\/DSA based key file. The text implies a Public Certificate, and the Key file is usually a pair of Public and Private Keys which are responsible for providing cryptographic security to the SSH Server.<\/p>

SSH Key Based Authentication provides cryptographic security to the SSH server, where the encryption algorithm works with a Public Key and Private Key pair. The user is granted access to data on the SSH server by decrypting the user\u2019s Public Key on the SSH Server with a Private Key for successful Authentication.<\/p>

  1. Public Key is available to any user who needs it and is bound to a user\u2019s identity by a Public Key Certificate. And if the SSH server considers Public keys to be trustworthy, they are called Authorized Keys.<\/li>
  2. Private Key is specific to a user, which is secret and never shared with any user. It can be accessed through a Passphrase. A user with a private key to a corresponding public key only can be authorized to access data on the SSH server and are called Identity Keys.<\/li><\/ol>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    Why Use Key-Based Authentication?<\/h2>

    Aside from offering significant security benefits, this authentication provides a few other advantages as well. These are:<\/p>