ASYNCHRONOUS MESSAGE DIGEST API(9)

💅 Asynchronous Message Digest API 💅

okay so bestie, welcome to the Kernel API Manual page for the Asynchronous Message Digest API — yes that's a whole mouthful, but stay with me, it's actually iconic 🫶

✨ DESCRIPTION ✨

So the asynchronous message digest API is the one you use with the ciphers of type CRYPTO_ALG_TYPE_AHASH — which, if you peek inside /proc/crypto, shows up listed as type "ahash" 🔍✨

And the way the asynchronous cipher operation discussion works for the CRYPTO_ALG_TYPE_SKCIPHER API? yeah, that whole thing applies here too, no cap. same energy, same rules 💅

ngl bestie, this one's short and sweet — but every detail still matters, so don't skip the paperwork 💖

🌸 SEE ALSO 🌸

okay this is the part where the page goes full main-character and lists literally everyone in the group chat 🎀 like, it's giving "let me introduce you to my entire friend group" and honestly? obsessed 💜

• ./include/crypto/hash.h — Kernel file, the actual source of truth bestie 📂
• Message Digest Algorithm Definitions(9) 📝
• struct ahash_alg(9) 🧚
• struct shash_alg(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_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) — yes the sync sibling, we love a family reunion 😭
• 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)

and that's the whole vibe check, bestie 🌈 this page lives in ./include/crypto, stamped October 2026 — go forth, hash responsibly, and slay 💅💖✨🦋