crypto_free_skcipher(9)

💅 crypto_free_skcipher — the Kernel API Manual glow-up ✨

okay bestie, welcome to the Kernel API Manual, page crypto_free_skcipher(9) 🎀 this one is short but she is important — it's the cleanup girlie of the symmetric key cipher world, and honestly she ate 💅

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🦋 NAME

crypto_free_skcipher — zeroize and free cipher handle 🌸

like, she wipes the secrets clean and then frees the handle. no cap, zeroize first is the whole vibe check 🔥

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✨ SYNOPSIS

void crypto_free_skcipher (struct crypto_skcipher *tfm );

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🫶 ARGUMENTS

• tfm — the cipher handle to be freed 💖 that's it, that's the whole argument list, she's low maintenance

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💖 DESCRIPTION

okay so here's the tea ☕ — if tfm is a NULL pointer or an error pointer, this function does literally nothing. no crash, no drama, no chaos. it just vibes and returns 🧚✨

so yes, you can call her on your messy error-path handles and she will not make it weird 🫶 iconic behavior, honestly 👑

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🌈 SEE ALSO

the whole friend group 🎀 every single one of these, no skips:

• Kernel file ./include/crypto/skcipher.h
• 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_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)
• skcipher_request_set_crypt(9)

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💀 reminder bestie: "does nothing on NULL or error pointer" is a feature, not an invitation to pass garbage. free your real handles, ok? 🫶

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and that's the whole page, short and slay ✨ she comes from the source spot ./include/crypto, dated October 2026, and she's filed under crypto_free_skcipher(9) in the Kernel API Manual 📚💜 bye bestie, go zeroize responsibly 🎀🦋