The Key to Secure Server Access: Understanding SSH Formats
**SSH (Secure Shell)** keys are the gold standard for secure remote server administration. While they appear to be simple text files, they follow a very strict structural specification. Even a single missing hyphen in the `BEGIN` or `END` tags, or an invisible trailing space, can cause a server to reject the key with an ambiguous "invalid format" error. Troubleshooting these issues is a common frustration for developers, especially when copying keys across different operating systems or terminal emulators.
This tool analyzes your input to identify the underlying format. It can distinguish between the modern **OpenSSH** format, legacy **RSA** or **DSA** formats, and standard **Public Key** formats (like those used in `authorized_keys`). By checking for common mistakes—such as missing line breaks at the end of a private key or incorrect encoding—this validator helps you resolve connection issues in seconds instead of hours.
Security is our top priority. We understand that private keys are highly sensitive. That's why the Simplewoody SSH Validator operates entirely on the **client-side**. No data is ever sent to our servers or stored in any database. Your browser processes the text locally, giving you peace of mind while you debug your infrastructure settings. Ensure your access keys are in perfect shape and maintain a seamless DevOps workflow with our precision tools.
Frequently Asked Questions (FAQ)
A: This happens if the required headers like '-----BEGIN ...' are missing or misspelled. Check if the entire file content was copied correctly.
A: No. This tool only validates the structural integrity of the file format, not the cryptographic validity of the contents or the passphrase.
A: This tool supports OpenSSH standard formats. If you have a .ppk file, use PuttyGen to convert it to an OpenSSH format before checking it here.