aes_cbc_cts_decrypt(9)

✨ aes_cbc_cts_decrypt(9) — NAME ✨

okay so bestie, welcome to the Kernel API Manual 💅 this page is literally all about aes_cbc_cts_decrypt — the function that decrypts your data using AES-CBC-CTS (the CS3 variant, iykyk 🦋). no cap, that's the whole vibe.

🌸 SYNOPSIS 🌸

void aes_cbc_cts_decrypt (u8 *dst , const u8 *src , size_t len , u8
iv[static AES_BLOCK_SIZE] , const struct aes_key *key );

that's the whole signature, periodt 🎀

💖 ARGUMENTS 💖

• dst — the destination buffer, aka where the decrypted goodness lands. it can be in-place or out-of-place, both are totally fine 🫶. but for any other kind of overlap? nope — the behaviour is unspecified 🙈 so like, don't do that, bestie, fr fr.
• src — the source data. the ciphertext. the thing you're decrypting. literally the main character of this whole operation 👑.
• len — number of bytes to decrypt. and listen, it must be at least AES_BLOCK_SIZE — no tiny little sliver of a buffer, okay? 💀
• iv — the initialization vector. heads up though: it gets clobbered by this function 😭 like it just straight-up gets wrecked in the process, so don't come back expecting to find it the way you left it.
• key — the key. and it has to already be prepared using aes_preparekey — do that first, don't skip ahead 🧚.

⭐ CONTEXT ⭐

Any context. yup, that's it — anywhere, any context, she's flexible like that 💜.

🔥 SEE ALSO 🔥

• Kernel file ./include/crypto/aes-cbc.h
• aes_cbc_encrypt(9)
• aes_cbc_decrypt(9)
• aes_cbc_cts_encrypt(9)

go read those too if you wanna be an AES-CBC-CTS scholar, ngl 🌈

and finally, the cute lil sign-off 💌: this page lives under ./include/crypto, and it's dated October 2026 — slay, we love a documented kernel function 🎀✨💖