The definitive reference manual for OpenSSL CLI commands: CSR generation, certificate inspection, modulus verification, format conversions, and live TLS testing.
openssl req -new -newkey rsa:2048 -nodes -keyout domain.key -out domain.csropenssl x509 -in certificate.crt -text -nooutopenssl x509 -noout -modulus -in cert.crt | openssl md5
openssl rsa -noout -modulus -in privkey.key | openssl md5
# Output hashes must be identical!openssl pkcs12 -export -out certificate.pfx -inkey privkey.key -in cert.crt -certfile chain.crtopenssl s_client -connect example.com:443 -servername example.comYou can perform all format conversions and key matches directly in your browser using our zero-knowledge online tools:
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