PKCS7_GET_OCTET_STRING(3ossl)

💖 PKCS7_GET_OCTET_STRING 💖

okay bestie, so this is the OpenSSL man page for PKCS7_get_octet_string, section 3ossl. it's short, it's sweet, and it's giving "one tiny function with one big job" energy. let's get into it 🫶

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✨ NAME ✨

PKCS7_get_octet_string — grab that octet string out of a PKCS#7 envelopedData structure, no cap 💅

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🌸 SYNOPSIS 🌸

#include <openssl/pkcs7.h>

ASN1_OCTET_STRING *PKCS7_get_octet_string(PKCS7 *p7);

like, that's the whole thing. one include, one function, one argument. iconic minimalism honestly ✨

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🦋 DESCRIPTION 🦋

so PKCS7_get_octet_string() hands you back a pointer to an ASN1 octet string that lives inside a PKCS#7 envelopedData structure. that's the whole vibe.

and if the structure just cannot be parsed? it returns NULL. 💀 no octet string for you, bestie, the parse said no.

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🎀 NOTES 🎀

okay this part is lowkey important, don't skip it:

as that 0 implies, PKCS7_get_octet_string() returns internal pointers, and you should not free them yourself. the caller does not free. periodt. 🙈

like yes it's a pointer, no it is not yours to free(). do not do it. it's giving "borrowed, not gifted" 💜

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🌈 RETURN VALUES 🌈

PKCS7_get_octet_string() returns an ASN1_OCTET_STRING pointer. that's it, that's the return value. 🌟

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👑 SEE ALSO 👑

• PKCS7_type_is_data(3) — go read that one next, bestie, it's right there 🧚

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⭐ COPYRIGHT ⭐

Copyright 2002-2020 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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and that's the whole page, bestie!! 🎉 this one came from OpenSSL 3.5.9, dated 2026-09-29, and it's officially a PKCS7_GET_OCTET_STRING(3ossl) situation. go forth, parse your envelopedData, and do not free that internal pointer. mwah 💖🌸