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 â OpenSSL application commands
| Use Case | Command | Description |
|---|---|---|
| đ Certificate Management | req, ca, x509, verify | Create, sign, manage, and verify certificates |
| đ Encryption/Decryption | enc, cms, smime | Encrypt/decrypt data with various algorithms |
| đī¸ Key Generation | genrsa, gendsa, genpkey, ecparam | Generate RSA, DSA, EC, and general keys |
| đ Key Management | rsa, dsa, ec, pkey, pkeyparam | Manage and convert key formats |
| đ Message Digests | dgst | Compute and verify message digests |
| đ SSL/TLS Testing | s_client, s_server, s_time | Test SSL/TLS connections and performance |
| đĻ PKCS Support | pkcs12, pkcs7, pkcs8 | Handle PKCS#12, #7, #8 formats |
| đ˛ Random Data | rand | Generate pseudo-random bytes |
| đ Password Hashing | passwd | Compute password hashes |
| đ OCSP | ocsp | Online Certificate Status Protocol |
| đ Cipher Information | ciphers | List available cipher suites |
| â ī¸ Error Handling | errstr | Convert error codes to strings |
| đ ī¸ Other Utilities | prime, nseq, spkac, crl, crl2pkcs7, dhparam, dsaparam, rehash, sess_id, speed, srp, storeutl, ts, kdf, mac, engine, info, version | Various cryptographic utilities |
openssl cmd -help | [-option | -option arg] ... [arg] ...
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".
Among others, every subcommand has a help option.
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 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.
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