ahash_request_set_tfm(9)

💖 NAME 💖

okay bestie, this page is ahash_request_set_tfm(9) from the Kernel API Manual. It does exactly one iconic thing: update cipher handle reference in request. Literally the “swap the tfm” move, no cap.

✨ SYNOPSIS ✨

void ahash_request_set_tfm (struct ahash_request *req , struct
       crypto_ahash *tfm );

That’s the whole signature, untouched and slaying in its natural habitat.

🎀 ARGUMENTS 🎀

• req — the request handle to be modified. This is the thing getting a little update, bestie.
• tfm — the cipher handle that shall be added to the request handle. Yes, it’s the new tfm moving in.

🦋 DESCRIPTION 🦋

Allow the caller to replace the existing ahash handle in the request data structure with a different one. That’s the whole vibe: out with the old ahash handle, in with a different one. It’s giving “request data structure refresh,” and honestly? Slay.

🌈 SEE ALSO 🌈

go read these too, bestie — they’re all linked in the original and I’m not skipping a single one:

• 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_init(9)
• crypto_ahash_update(9)
• Asynchronous Hash Request Handle(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)

xoxo, your kernel bestie 💅 — signed off from source/version ./include/crypto, dated October 2026, repping ahash_request_set_tfm(9). 🫶