crypto_ahash_init(9)

💅 crypto_ahash_init(9) — the kernel API manual, but make it make sense 🎀

okay so bestie, you're looking at crypto_ahash_init(9) from the Kernel API Manual. it's short, it's sweet, and it's literally about wiping the slate clean. let's get into it ✨

---

✨ NAME ✨

crypto_ahash_init — (re)initialize message digest handle

like, resets the vibe of your digest. fresh start energy 💫

---

🌸 SYNOPSIS 🌸

int crypto_ahash_init (struct ahash_request *req );

---

🎀 ARGUMENTS 🎀

• req — your ahash_request handle 🫶 and no cap, it has to already be initialized with all the necessary data using the ahash_request_* API functions. like, do your homework first, then come talk to this function. it's giving "prerequisites matter" 💅

---

🦋 DESCRIPTION 🦋

so basically: this call (re-)initializes the message digest that your ahash_request handle is pointing at. 🪄

and the way that any potentially existing state created by previous operations just gets discarded?? yep. gone. deleted. not me throwing away your whole history 😭 that's the whole point though — clean slate, main character energy, periodt. 💀✨

---

👑 RETURN 👑

the return value? it lives over in crypto_ahash_final — go check there, iykyk 🔥

---

🌈 SEE ALSO 🌈

the friend group 🫶 (all of these, fr fr):

• Kernel file ./include/crypto/hash.h Message Digest Algorithm Definitions(9)
• struct ahash_alg(9)
• struct shash_alg(9)
• Asynchronous Message Digest API(9)
• crypto_alloc_ahash(9)
• crypto_free_ahash(9)
• crypto_has_ahash(9)
• crypto_ahash_blocksize(9)
• crypto_ahash_digestsize(9)
• crypto_ahash_statesize(9)
• crypto_ahash_reqtfm(9)
• crypto_ahash_reqsize(9)
• crypto_ahash_setkey(9)
• crypto_ahash_finup(9)
• crypto_ahash_final(9)
• crypto_ahash_digest(9)
• crypto_ahash_export(9)
• crypto_ahash_import(9)
• crypto_ahash_update(9)
• Asynchronous Hash Request Handle(9)
• ahash_request_set_tfm(9)
• ahash_request_alloc(9)
• ahash_request_free(9)
• ahash_request_set_callback(9)
• ahash_request_set_crypt(9)
• ahash_request_set_virt(9)
• Synchronous Message Digest API(9)
• crypto_alloc_shash(9)
• crypto_free_shash(9)
• crypto_shash_blocksize(9)
• crypto_shash_digestsize(9)
• crypto_shash_descsize(9)
• crypto_shash_setkey(9)
• crypto_shash_digest(9)
• crypto_shash_tfm_digest(9)
• crypto_shash_export(9)
• crypto_shash_import(9)
• crypto_shash_init(9)
• crypto_shash_finup(9)
• crypto_shash_update(9)
• crypto_shash_final(9)

---

okay that's the whole page, you ate that 💖

sign-off bestie: this little legend lives in the Kernel file ./include/crypto, dated October 2026, and yes the manual name is crypto_ahash_init(9) — now go reinitialize something, slay 🌸🦋⭐