SSHCheck Guides & Examples
Practical, no-fluff documentation for SSHCheck — written by people who hit the problems first.
About SSHCheck
What sshcheck decodes from an SSH public key, how it computes the fingerprint, what it refuses, and why it can never tell you whether a key is authorised anywhere.
SSHCheck Changelog
Dated changes to sshcheck: the move to the shared site template and the new key inspector and authorized_keys checker.
authorized_keys Format: Options, Comments and Why Lines Get Skipped
The line grammar of authorized_keys, the options that go before the key, what makes sshd ignore a line, and the permission rules the checker cannot see.
SSH Key Types and Sizes: Which to Generate, Which to Retire
How ed25519, ECDSA, RSA and DSA keys differ, what size means for each, why ssh-rsa lines stopped working on new servers, and how the inspector reads each type.
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