crypto_register_akcipher(9)

💖 crypto_register_akcipher(9) — bestie's guide to signing algorithms up for duty 💖

okay so you found the kernel API manual page for crypto_register_akcipher(9) and you're like "what is this" — don't worry, I got you 🫶 this is the Linux kernel crypto API corner of the docs, and this page is short, sweet, and honestly kind of iconic.

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✨ NAME ✨

crypto_register_akcipher — register a public key algorithm 🔑✨

Like, that's the whole vibe. You're introducing the kernel to a shiny new public key cipher implementation.

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🦋 SYNOPSIS 🦋

int crypto_register_akcipher (struct akcipher_alg *alg );

one function, one pointer, zero drama. 💅

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🌸 ARGUMENTS 🌸

• alg — the algorithm definition 🎀 i.e. the struct that describes your public key cipher algorithm. This is the little packet of info the kernel needs to know what it's working with.

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👑 DESCRIPTION 👑

bestie, this function registers an implementation of a public key cipher algorithm ✨ that's it, that's the job. You hand it your struct akcipher_alg * and it goes "noted, added to the roster" 📋💖

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💀 RETURN 💀

• zero on success 🎉 (zero is the good number here, no cap)
• an error code in case of error 😭 — so like, check it, don't just ignore it, iykyk

fr fr always check the return value, bestie. 0 = we ate. anything else = something went sideways. 🙈

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🔥 SEE ALSO 🔥

• Kernel file ./include/crypto/internal/akcipher.h 📄
• crypto_unregister_akcipher(9) — the "okay bye" counterpart 💜
• akcipher_register_instance(9) — the instance-level sibling 🧚

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that's the whole page, short and iconic 💅 the source lives in ./include/crypto/internal, this drop is from October 2026, and the page name is crypto_register_akcipher(9) in case you forgot already 🎀 mwah, go register some algorithms, you got this 💖✨