OPENSSL-SKEYUTL(1ossl)

💅 NAME 💅

Okay bestie, this is the openssl-skeyutl page from the 1ossl manual, and it is literally all about opaque symmetric keys routines. The command is openssl-skeyutl, and it's giving “keys that are not just raw bytes” main character energy. 💖

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✨ SYNOPSIS ✨

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

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🦋 DESCRIPTION 🦋

Not all cipher implementations support keys as raw bytes, and that's just the tea. 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. Slay. 🔥

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🎀 OPTIONS 🎀

• -help — Print out a usage message. Helpful bestie behavior, honestly. 🫶
• -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. That's a hard no, bestie. 🚫

• -genkey — Generate a new opaque key object.
• -provider name — Provider option. See "Provider Options" in openssl(1), provider(7), and property(7).
• -provider-path path — Provider option. See "Provider Options" in openssl(1), provider(7), and property(7).
• -provparam [name:]key=value — Provider option. See "Provider Options" in openssl(1), provider(7), and property(7).
• -propquery propq — Provider option. See "Provider Options" in openssl(1), provider(7), and property(7).

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🌈 SEE ALSO 🌈

• openssl-enc(1)
• EVP_SKEY(3)

Go check them out, iykyk. 👑

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💜 HISTORY 💜

The skeyutl command was added in OpenSSL 3.5. Periodt. ⭐

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🌸 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>.

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Version 3.5.0, dated 2026-09-25 — that's the footer, bestie, and we are done. Bye! 🎀💖