crypto_lskcipher_ivsize(9)

💅 crypto_lskcipher_ivsize(9) 💅

okay so bestie, welcome to the Kernel API Manual — yes the actual kernel, yes the actual manual, we're doing this 🎀 this one's about crypto_lskcipher_ivsize, and it's lowkey the easiest page in the whole crypto folder, so consider this your lil warm-up stretch before the big ones ✨

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🌸 NAME 🌸

crypto_lskcipher_ivsize — obtain IV size 🦋

like, it gets you the IV size. that's the whole job. she's a one-task queen and she ate 👑

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✨ SYNOPSIS ✨

unsigned int crypto_lskcipher_ivsize (struct crypto_lskcipher *tfm );

that's it. one function, one argument, returns an unsigned int. no cap, no surprises, no drama 💅

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🫶 ARGUMENTS 🫶

• tfm — the cipher handle 💖 this is your lil pointer to the struct crypto_lskcipher, i.e. the thing that actually knows about the cipher you're working with. you bring the handle, she brings the facts.

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💜 DESCRIPTION 💜

so the size of the IV for the lskcipher referenced by the cipher handle is returned 📏✨ that's the whole vibe.

and here's the important lil detail — this IV size may be zero if the cipher does not need an IV 🙈 which is literally fine and normal, some ciphers are just like "no IV for me thanks" and that's their main character energy. so don't panic when you get a 0, it's not a bug, it's a lifestyle 🦋

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⭐ RETURN ⭐

IV size in bytes 📐 that's the answer, that's the unit, bytes, go forth and use it 💖

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🌈 SEE ALSO 🌈

okay this is the long part, grab a snack 🍓 — the kernel file ./include/crypto/skcipher.h, plus struct skcipher_request(9), struct skcipher_alg(9), struct lskcipher_alg(9), Symmetric Key Cipher API(9), crypto_alloc_skcipher(9), crypto_alloc_lskcipher(9), crypto_free_skcipher(9), crypto_free_lskcipher(9), crypto_has_skcipher(9), crypto_skcipher_ivsize(9), crypto_skcipher_blocksize(9), crypto_lskcipher_blocksize(9), crypto_skcipher_chunksize(9), crypto_lskcipher_chunksize(9), crypto_skcipher_statesize(9), crypto_lskcipher_statesize(9), crypto_skcipher_setkey(9), crypto_lskcipher_setkey(9), crypto_skcipher_reqtfm(9), crypto_skcipher_encrypt(9), crypto_skcipher_decrypt(9), crypto_skcipher_export(9), crypto_skcipher_import(9), crypto_lskcipher_encrypt(9), crypto_lskcipher_decrypt(9), Symmetric Key Cipher Request Handle(9), crypto_skcipher_reqsize(9), skcipher_request_set_tfm(9), skcipher_request_alloc(9), skcipher_request_free(9), skcipher_request_set_callback(9), skcipher_request_set_crypt(9) 🎀

like I said. long list. she has a lot of friends, we love a social queen 👑

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💀 real talk tho: don't get the skcipher and lskcipher versions mixed up in your head — this page is the lskcipher one, and crypto_skcipher_ivsize(9) is its sibling. both listed above, both valid, pick the one that matches your handle iykyk 🧚

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and that's the page!! ty for reading bestie, go get that IV size 💖✨🎀

from ./include/crypto, dated October 2026 — mwah, see u in the next manpage 🫶💅