aead_request_set_ad(9)

💅 aead_request_set_ad(9) — the Kernel API Manual glow-up

okay so bestie, welcome to aead_request_set_ad(9) from the Kernel API Manual ✨ this one is short, sweet, and honestly iconic in a "small but crucial" kinda way. no cap.

---

🌸 NAME 🌸

aead_request_set_ad — set associated data information 🎀

like, literally the function that tells your request how much AD is riding along with it. that's it. that's the whole vibe.

---

✨ SYNOPSIS ✨

void aead_request_set_ad(struct aead_request *req, unsigned int assoclen);

no return value, no drama — it's a void. it just does the thing and dips 💅

---

🫶 ARGUMENTS 🫶

• req — the request handle 💖 like, the actual AEAD request you're working with, bestie.
• assoclen — the number of bytes in the associated data 🌸 a plain old unsigned int, counting your AD bytes for you.

---

👑 DESCRIPTION 👑

Setting the AD information, periodt. This function sets the length of the associated data. that's the whole assignment, and it ate 🔥

so like, you've got your authenticated encryption with associated data situation going on, and the associated data part needs a length. this is the function that gives it one. no keys, no IVs, no authsize — just the length of the AD, set on the request. lowkey one job and it does it immaculately 🧚

ngl it's a setter. it sets. the length. of the associated data. that's the entire plot and honestly we stan a focused function.

---

🌈 SEE ALSO 🌈

• Kernel file ./include/crypto/aead.h
• Authenticated Encryption With Associated Data (AEAD) Cipher API(9)
• struct aead_request(9)
• struct aead_alg(9)
• crypto_alloc_aead(9)
• crypto_free_aead(9)
• crypto_has_aead(9)
• crypto_aead_ivsize(9)
• crypto_aead_authsize(9)
• crypto_aead_blocksize(9)
• crypto_aead_setkey(9)
• crypto_aead_setauthsize(9)
• crypto_aead_encrypt(9)
• crypto_aead_decrypt(9)
• Asynchronous AEAD Request Handle(9)
• crypto_aead_reqsize(9)
• aead_request_set_tfm(9)
• aead_request_alloc(9)
• aead_request_free(9)
• aead_request_set_callback(9)
• aead_request_set_crypt(9)

like, the whole AEAD friend group showed up to the group chat 🦋 go read them too, iykyk 💜

---

that's the whole page, bestie — short and slay 💅 this one came straight out of ./include/crypto and it's dated October 2026, so yeah, mark your calendars and stan responsibly 🌟 mwah 🎀