KCAPI_AEAD_AUTHSIZE(3)

📦
version 1.5.0 · 7 versions
, in fedora 43

💖 KCAPI_AEAD_AUTHSIZE — ok so bestie, meet your new fave function 💖

Like, this is a page from the libkcapi manual (section 3, the library-functions girlies ✨), and it's all about one little function that tells you how big your authentication tag can get. Short page, big vibes, let's go 🎀

✨ NAME ✨

kcapi_aead_authsize — return the maximum size of the tag 🏷️

🌸 SYNOPSIS 🌸

uint32_t kcapi_aead_authsize(struct kcapi_handle * handle);

🦋 ARGUMENTS 🦋

  • handle — [in] the cipher handle, aka your little passport to the cipher world 🫶

👑 DESCRIPTION 👑

okay so here's the tea ☕ — what this function hands back to you is the maximum: like, the biggest size of the authentication tag that your AEAD cipher can possibly produce 💅

And bestie, "maximum" is doing real work in that sentence, because smaller tag sizes may be chosen depending on the AEAD cipher type 🌈. So don't come for this function expecting the exact size you'll use — it's giving ceiling, not destiny ✨

What it returns, fr fr:

  • > 0 — specifying the block size 👑
  • 0 — on error 💀
no cap, if you get a 0 back, something went wrong — that's not a size, that's a vibe check that failed 😭

💜 AUTHOR 💜

Stephan Mueller <smueller@chronox.de> — author. icon, legend, the moment 👑

That's all she wrote, bestie 🎀 This page is from the libkcapi Manual, version 1.5.0, dated July 2025, and you'll find it filed under KCAPI_AEAD_AUTHSIZE(3) 💖

go forth and authsize, you absolute main character 🦋✨

📦 where this page comes from