KCAPI_KPP_KEYGEN(3)

✨ NAME ✨

kcapi_kpp_keygen — bestie, this one generates a public key 💖

Okay so real talk, this is a page from the libkcapi manual (section 3, the library-calls section, iykyk), and it's all about making a brand new public key. Let's get into it 🫶

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🌸 SYNOPSIS 🌸

ssize_t kcapi_kpp_keygen(struct kcapi_handle * handle, uint8_t * pubkey,
                         size_t pubkeylen, int access);

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🎀 ARGUMENTS 🎀

• handle — [in] the cipher handle, aka your little passport to the kernel crypto world 💅
• pubkey — [out] the generated public key lands right here, freshly baked ✨
• pubkeylen — [in] how long that key buffer is, bestie, gotta tell it
• access — [in] the kernel access type, and there are three vibes to pick from:
  • KCAPI_ACCESS_HEURISTIC — uses an internal heuristic to find the fastest kernel access 🔥
  • KCAPI_ACCESS_VMSPLICE — uses vmsplice access
  • KCAPI_ACCESS_SENDMSG — uses sendmsg access

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💜 DESCRIPTION 💜

So what does it return, you ask? 👀

On success it returns the number of bytes returned by the key generation operation. On error it hands you back a negative errno-style error code — not me getting a negative number and knowing exactly what that means 😭 it's giving "something went wrong, check the errno."

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👑 AUTHOR 👑

Stephan Mueller <smueller@chronox.de> — Author. Periodt. 💅

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🌈 COPYRIGHT 🌈

That's the whole page, bestie 🦋 no cap, you now know everything this manual entry has to say.

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Sign-off time: this lil masterpiece lives in the libkcapi Manual, version 1.5.0, dated July 2025, and it goes by the name KCAPI_KPP_KEYGEN(3) 💖 Go generate some keys, you main character 👑✨