OPENSSL-CORE.H(7ossl)

💖 NAME 💖

okay so this is <openssl/core.h> — OpenSSL Core types — and yes bestie, you are literally on the OPENSSL-CORE.H(7ossl) page. 💅

✨ SYNOPSIS ✨

#include <openssl/core.h>

🌸 DESCRIPTION 🌸

The <openssl/core.h> header defines a bunch of public types, and their whole job is to let the OpenSSL libraries and implementation providers talk to each other. 🫶

These types are designed to minimise the need for intimate knowledge of internal structures between the OpenSSL libraries and the providers. So like… no one has to peek under anyone else’s hood just to communicate, and honestly? iconic. ✨

The types are:

• OSSL_DISPATCH(3)
• OSSL_ITEM(3)
• OSSL_ALGORITHM(3)
• OSSL_PARAM(3)
• OSSL_CALLBACK(3)
• OSSL_PASSPHRASE_CALLBACK(3)

🦋 SEE ALSO 🦋

• openssl-core_dispatch.h(7) — go read that too, bestie 💖

🎀 HISTORY 🎀

The types described here were added in OpenSSL 3.0. so yeah, they’re giving modern-era OpenSSL, no cap. 🌈

👑 COPYRIGHT 👑

Copyright 2019-2021 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>.

made with 💖 from OpenSSL version 3.5.0, dated 2026-09-25, and this is the OPENSSL-CORE.H(7ossl) page — mwah! 🎀🦋✨