hchacha_block_generic(9)

hchacha_block_generic(9) — Kernel API Manual bestie! 💅✨ Lowkey iconic, fr fr.

🌸 NAME 🌸

hchacha_block_generic — abbreviated ChaCha core, for XChaCha 💫 periodt.

✨ SYNOPSIS ✨

Okay so here's the exact signature, no cap — copy it exactly, iykyk:

void hchacha_block_generic (const struct chacha_state *state , u32
out[HCHACHA_OUT_WORDS] , int nrounds );

🎀 ARGUMENTS 🎀

ngl these are the three things you pass in:

• state — input state matrix 🧚
• out — the output words 🫶
• nrounds — number of rounds (20 or 12; 20 is recommended) 🔥

🦋 DESCRIPTION 🦋

HChaCha is literally the ChaCha equivalent of HSalsa and it's an intermediate step towards XChaCha (see https://cr.yp.to/snuffle/xsalsa-20081128.pdf) 🧚✨ It's giving main character energy in the XChaCha pipeline, highkey.

The way that HChaCha works: it skips the final addition of the initial state, and outputs only certain words of the state. 👑 Not me being obsessed with how it only outputs certain words, but okay.

Bestie, important vibe check: it should not be used for streaming directly. 💀

🌈 SEE ALSO 🌈

Go look at these if you want the full lore:

• Kernel file ./lib/crypto/chacha-block-generic.c 🍓
• chacha_block_generic(9) 💜

Sign-off cuteness: source/version is ./lib/crypto, date is October 2026, and the page is hchacha_block_generic(9). Bye bestie, slay! 💖✨