asn1_der_coding(3)

💖 asn1_der_coding — the libtasn1 girlie's guide to DER-encoding your fave structures 💖

okay bestie, sit down, hydrate, and let me tell you about asn1_der_coding(3) from libtasn1 — she's the one who takes your ASN1 element and turns it into actual DER bytes. no cap. 🦋

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✨ NAME ✨

asn1_der_coding — API function. yes that's it, that's the whole name, she's simple and she knows it 💅

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🌸 SYNOPSIS 🌸

#include <libtasn1.h>

int asn1_der_coding(asn1_node_const element, const char * name, void *
ider, int * len, char * ErrorDescription);

look at her. five arguments. absolutely iconic behaviour. 👑

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🎀 ARGUMENTS 🎀

• asn1_node_const element — this is your pointer to an ASN1 element. she's the main character of this whole operation, fr fr. 🌟
• const char * name — the name of the structure you wanna encode. important detail bestie: it must be inside *POINTER. like, it has to live there. no exceptions. 🫶
• void * ider — the vector that's gonna hold the DER encoding. and listen, DER must be a pointer to memory cells that are ALREADY ALLOCATED — she does not malloc for you, she is not your mom. 😭
• int * len — the number of bytes of * ider, i.e. ider [0].. ider [len-1]. and here's the tea: initially it holds the sizeof of the der vector. so you tell her how much room she's got, and she'll tell you how much she actually needed. mutual communication, we love to see it. 💜
• char * ErrorDescription — she puts the error description in here, or an empty string if everything went great. a little success note, a little "you ate". ✨

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🦋 DESCRIPTION 🦋

Creates the DER encoding for the NAME structure (inside the *POINTER structure). that's it. that's the vibe. she encodes, you celebrate. 🎉

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🔥 RETURNS 🔥

here's the vibe check on what she hands back:

• ASN1_SUCCESS — DER encoding OK, she slayed, periodt. 👑
• ASN1_ELEMENT_NOT_FOUND — name is not a valid element. bestie that's not a real one. 💀
• ASN1_VALUE_NOT_FOUND — there's an element without a value. she can't work with vibes alone, she needs data. 😭
• ASN1_MEM_ERROR — the ider vector isn't big enough. and in this case len will contain the length needed, so she's actually doing you a solid and telling you exactly how much room to give her next time. so helpful. so generous. 🌈

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💜 COPYRIGHT 💜

Copyright © 2006-2025 Free Software Foundation, Inc..

Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved.

(translation: use it, share it, remix it, just keep the receipts. respect the elders. 🙏)

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⭐ SEE ALSO ⭐

The full documentation for libtasn1 is maintained as a Texinfo manual. If the info and libtasn1 programs are properly installed at your site, the command

info libtasn1

should give you access to the complete manual. As an alternative you may obtain the manual from:

https://www.gnu.org/software/libtasn1/manual/

go read it, bestie, it's giving ✨knowledge✨

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and that's the whole page!! 💖 written for libtasn1 version 4.21.0, page asn1_der_coding(3) — mwah, go encode something gorgeous, ily, bye!! 🎀🦋💅