crypto_ahash_statesize(9)

💅 crypto_ahash_statesize — the Kernel API Manual page, bestie edition ✨

Okay so this is crypto_ahash_statesize(9) from the Kernel API Manual, and it's literally the glow-up you need when you're doing ahash state things. Let's get into it 🫶

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🌸 NAME 🌸

crypto_ahash_statesize — bestie, this is how you obtain the size of the ahash state. That's it, that's the whole vibe.

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✨ SYNOPSIS ✨

unsigned int crypto_ahash_statesize (struct crypto_ahash *tfm );

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🎀 ARGUMENTS 🎀

• tfm — the cipher handle. Your little main character pointer 💅

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💖 DESCRIPTION 💖

So like, this function returns the size of the ahash state. Periodt.

Why do you care? Because with the crypto_ahash_export function, the caller can export the state into a buffer — and the size of that buffer is defined with this function. So you gotta call crypto_ahash_statesize first to know how much room to give it, no cap. It's giving "measure twice, export once" 🦋

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⭐ RETURN ⭐

Size of the ahash state. That's the whole return value, and honestly? Iconic.

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🌈 SEE ALSO 🌈

Okay this list is long but we do NOT skip parts, so buckle up bestie 🍓

• 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_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)
• 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)

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That's the whole page, bestie — go forth and size those states 💜

Sign-off szn 🎀: this lil beauty lives at ./include/crypto, dated October 2026, and it's filed under crypto_ahash_statesize(9) — iykyk ✨