crypto_lskcipher_encrypt(9)

✨ NAME ✨

crypto_lskcipher_encrypt — encrypt plaintext 💖

okay so bestie, welcome to the crypto_lskcipher_encrypt(9) page from the Kernel API Manual. This is the function that handles the actual plaintext encryption, and yes she's iconic for it. 🎀

🦋 SYNOPSIS 🦋

int crypto_lskcipher_encrypt (struct crypto_lskcipher *tfm , const u8 *src , u8 *dst , unsigned len , u8 *siv );

🎀 ARGUMENTS 🎀

• tfm — the lskcipher handle. That's your main-character cipher object, periodt.
• src — source buffer. This is where the plaintext is sitting.
• dst — destination buffer. This is where the encrypted output goes.
• len — number of bytes to process. Literally the count of bytes invited to the party.
• siv — IV + state for the cipher operation. The length of the IV must comply with the IV size defined by crypto_lskcipher_ivsize. The IV is then followed with a buffer with the length as specified by crypto_lskcipher_statesize. Encrypt plaintext data using the lskcipher handle. So yeah: IV first, state buffer right after it, and those length rules are not optional, bestie. 🫶

💅 RETURN 💅

>=0 if the cipher operation was successful. If it's positive, then this many bytes have been left unprocessed. < 0 if an error occurred. Like, negative is the "something went wrong" vibe, and positive is "we did it but some bytes are still outside the club." 😭

🌈 SEE ALSO 🌈

okay the reference list is long and honestly she ate. Start with the Kernel file ./include/crypto/skcipher.h, then the whole squad:

• 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_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)

cute sign-off: this page is from the Kernel API Manual, lives under the source ./include/crypto, and is stamped October 2026 with the name crypto_lskcipher_encrypt(9) on the label. 💖 Go encrypt something iconic, bestie. 🦋