KCAPI_KPP_ECDH_SETCU(3)

✨ NAME ✨

kcapi_kpp_ecdh_setcurve — bestie, this is the one that sets the ECC curve you're gonna use for ECDH 💅

(also known as KCAPI_KPP_ECDH_SETCU(3) if we're being formal, which we are, it's literally a manpage 🎀)

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🌸 SYNOPSIS 🌸

int kcapi_kpp_ecdh_setcurve(struct kcapi_handle * handle,
                            unsigned long curve_id);

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🦋 ARGUMENTS 🦋

• handle — [in] the cipher handle, your lil main character 🫶
• curve_id — [in] the ID of the ECC curve. yeah, the curve ID. iconic of it 💖

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💜 DESCRIPTION 💜

okay so listen. with this function, the caller sets the ECC curve for all the cipher operations that come after it. and the curve ID? it's one of the ECC_CURVE_* identifiers. no cap, that's the whole vibe check on the ID ✨

📌 note bestie: this function is the one that defines that the subsequent key generation AND shared secret operation will perform an ECC Diffie-Hellman operation. so like… it's not just picking a curve, it's setting the whole situation up. periodt 🔥

and the return? return 0 upon success; a negative errno-style error code if an error occurred 😭 (as it should be, fr fr)

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👑 AUTHOR 👑

Stephan Mueller <smueller@chronox.de>

• Author. yes that's him. the author. bow down 🎀

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🌈 COPYRIGHT 🌈

that's a wrap on the libkcapi Manual 1.5.0, dated July 2025 🦋 and the page itself is KCAPI_KPP_ECDH_SETCU(3), iykyk 💖 slay, go set that curve bestie 💅✨