openssl Helper

Pick a common certificate or key operation and get the exact openssl command to run.

This is generated in browser and is not sent to pah.moi servers.

About this tool2 paragraphs

Eleven operations: view a certificate, generate a key (RSA, Ed25519 or ECDSA P-256), make a self-signed cert or a CSR, verify a certificate against a CA chain, encrypt or decrypt a file, convert PEM↔DER, extract from a PKCS12 bundle or build one, or open an s_client connection.

Set the key size, the subject, and whether the key is passphrase-protected; each field names the operation it applies to. The command is assembled in your browser and copied with one control, and openssl-cli builds the identical string offline.

Use it locally This tool has a native command line twin. Build openssl-cli from the site's source with:
cargo build --release --bin openssl-cli
Source and licence terms