OPENSSL-SKEYUTL(1ossl)

💖 NAME 💖

okay bestie, welcome to OPENSSL-SKEYUTL(1ossl) from the OpenSSL manual — this one is all about openssl-skeyutl, the opaque symmetric keys routines tool. ✨

✨ SYNOPSIS ✨

openssl skeyutl [-help] [-cipher cipher] [-skeymgmt skeymgmt] [-skeyopt
opt:value] [-genkey] [-provider name] [-provider-path path] [-provparam
[name:]key=value] [-propquery propq]

🦋 DESCRIPTION 🦋

Not every cipher implementation is out here supporting keys as raw bytes, okay? E.g. PKCS#11 tokens can store them internally without any option to get the raw byte representation. So this tool is designed for managing opaque symmetric keys. 💅

💅 OPTIONS 💅

• -help — prints out a usage message.
• -cipher cipher — the cipher to generate the key for.
• -skeymgmt skeymgmt — some providers may support opaque symmetric keys objects. To use them, we need to know the skeymgmt. If not specified, the name of the cipher will be used. To find out the name of the suitable symmetric key management, please refer to the output of the openssl list -skey-managers command.
• -skeyopt opt:value — to obtain an existing opaque symmetric key or to generate a new one, key options are specified as opt:value. These options can't be used together with any options implying raw key either directly or indirectly.
• -genkey — generate a new opaque key object.
• -provider name — see "Provider Options" in openssl(1), provider(7), and property(7).
• -provider-path path — see "Provider Options" in openssl(1), provider(7), and property(7).
• -provparam [name:]key=value — see "Provider Options" in openssl(1), provider(7), and property(7).
• -propquery propq — see "Provider Options" in openssl(1), provider(7), and property(7).

🔥 SEE ALSO 🔥

• openssl-enc(1)
• EVP_SKEY(3)

🌈 HISTORY 🌈

The skeyutl command was added in OpenSSL 3.5. 👑

👑 COPYRIGHT 👑

Copyright 2025 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>.

that's the whole page, bestie — this is OPENSSL-SKEYUTL(1ossl) from OpenSSL version 3.5.6, dated 2026-04-07. mwah 💋✨