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OPENSSL-CMDS(1SSL) OpenSSL OPENSSL-CMDS(1SSL)

📘 NAME

asn1parse, ca, ciphers, cms, crl, crl2pkcs7, dgst, dhparam, dsa, dsaparam, ec, ecparam, enc, engine, errstr, gendsa, genpkey, genrsa, info, kdf, mac, nseq, ocsp, passwd, pkcs12, pkcs7, pkcs8, pkey, pkeyparam, pkeyutl, prime, rand, rehash, req, rsa, rsautl, s_client, s_server, s_time, sess_id, smime, speed, spkac, srp, storeutl, ts, verify, version, x509 - OpenSSL application commands

🚀 Quick Reference

Use Case	Command	Description
🔑 Generate RSA key	openssl genrsa	Generate an RSA private key
📜 Create CSR	openssl req	Generate a certificate signing request
🪪 Display certificate	openssl x509	Display or manipulate X.509 certificates
🔐 Compute digest	openssl dgst	Compute message digests (e.g., SHA256)
🔒 Encrypt/decrypt	openssl enc	Encrypt or decrypt data with symmetric ciphers
🌐 Test SSL connection	openssl s_client	Test SSL/TLS connections to a server
🖥️ Run SSL server	openssl s_server	Run a test SSL/TLS server
✅ Verify certificate	openssl verify	Verify certificate chain
🏛️ CA operations	openssl ca	Certificate Authority (CA) management
📦 PKCS12 management	openssl pkcs12	Create or parse PKCS12 keystores

📋 SYNOPSIS

openssl cmd -help | [-option | -option arg] ... [arg] ...

📖 DESCRIPTION

Every cmd listed above is a (sub-)command of the openssl(1) application. It has its own detailed manual page at openssl-cmd(1). For example, to view the manual page for the openssl dgst command, type "man openssl-dgst".

⚙️ OPTIONS

Among others, every subcommand has a help option.

• -help — Print out a usage message for the subcommand.

🔗 SEE ALSO

openssl(1), openssl-asn1parse(1), openssl-ca(1), openssl-ciphers(1), openssl-cms(1), openssl-crl(1), openssl-crl2pkcs7(1), openssl-dgst(1), openssl-dhparam(1), openssl-dsa(1), openssl-dsaparam(1), openssl-ec(1), openssl-ecparam(1), openssl-enc(1), openssl-engine(1), openssl-errstr(1), openssl-gendsa(1), openssl-genpkey(1), openssl-genrsa(1), openssl-info(1), openssl-kdf(1), openssl-mac(1), openssl-nseq(1), openssl-ocsp(1), openssl-passwd(1), openssl-pkcs12(1), openssl-pkcs7(1), openssl-pkcs8(1), openssl-pkey(1), openssl-pkeyparam(1), openssl-pkeyutl(1), openssl-prime(1), openssl-rand(1), openssl-rehash(1), openssl-req(1), openssl-rsa(1), openssl-rsautl(1), openssl-s_client(1), openssl-s_server(1), openssl-s_time(1), openssl-sess_id(1), openssl-smime(1), openssl-speed(1), openssl-spkac(1), openssl-srp(1), openssl-storeutl(1), openssl-ts(1), openssl-verify(1), openssl-version(1), openssl-x509(1)

📜 HISTORY

Initially, the manual page entry for the "openssl cmd" command used to be available at cmd(1). Later, the alias openssl-cmd(1) was introduced, which made it easier to group the openssl commands using the apropos(1) command or the shell's tab completion.

In order to reduce cluttering of the global manual page namespace, the manual page entries without the 'openssl-' prefix have been deprecated in OpenSSL 3.0 and will be removed in OpenSSL 4.0.

©️ COPYRIGHT

Copyright 2019-2020 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the Apache License 2.0 (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at https://www.openssl.org/source/license.html.

3.0.2 2026-06-02 OPENSSL-CMDS(1SSL)

📘 NAME 🚀 Quick Reference 📋 SYNOPSIS 📖 DESCRIPTION ⚙️ OPTIONS 🔗 SEE ALSO 📜 HISTORY ©️ COPYRIGHT