skcipher_request_set_crypt(9)

💅 skcipher_request_set_crypt(9) 💅

okay so this is a page straight out of the Kernel API Manual (yes, the kernel has lore too 🌸), and it's all about skcipher_request_set_crypt — the function that tells your symmetric-cipher request where the data actually lives. bestie, it's giving "matchmaker for buffers" and I'm obsessed 🫶

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✨ NAME ✨

skcipher_request_set_crypt — set data buffers 💖

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🦋 SYNOPSIS 🦋

void skcipher_request_set_crypt (struct skcipher_request *req , struct
scatterlist *src , struct scatterlist *dst , unsigned int cryptlen ,
void *iv );

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🎀 ARGUMENTS 🎀

• req — the request handle. your main character struct 👑
• src — source scatter / gather list. where the bytes are coming from 🌈
• dst — destination scatter / gather list. where the bytes are going to 🎯
• cryptlen — number of bytes to process from src. literal count, no cap 🔢
• iv — the IV for the cipher operation, and it must comply with the IV size defined by crypto_skcipher_ivsize ⚠️ (not negotiable, she has a size and she sticks to it 💅)

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⭐ DESCRIPTION ⭐

So what does it actually do? This function allows setting of the source data and destination data scatter / gather lists. that's the whole gig, and she does it flawlessly ✨

Now here's the important part, so listen up 🧚:

• For an encryption operation, the source is treated as the plaintext and the destination is the ciphertext 🔐
• For a decryption operation, the use is reversed — the source is the ciphertext and the destination is the plaintext 🔓

it's giving "same function, two moods" and honestly? iconic 😭💜

ngl, if you mix up src and dst on a decrypt, that's a vibe check you will fail 💀 keep the direction straight!

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🌸 SEE ALSO 🌸

Kernel file ./include/crypto/skcipher.h — and also literally all of these besties:

• 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_lskcipher_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)

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and that's the tea ☕ this page lives in ./include/crypto, dated October 2026 🌈 go set those buffers, bestie, you got this fr fr 💖✨🎀