ecc_point_mult_shamir(9)

💅 NAME

ecc_point_mult_shamir — bestie, this one adds two points that've each been multiplied by their own scalar ✨ (yes, the official Kernel API Manual page for it, and it's lowkey iconic).

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✨ SYNOPSIS

void ecc_point_mult_shamir (const struct ecc_point *result , const u64
*x , const struct ecc_point *p , const u64 *y , const struct ecc_point
*q , const struct ecc_curve *curve );

It returns nothing (void, we love a no-strings-attached king 👑) — the magic lands in result. 🫶

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🎀 ARGUMENTS

Okay so here's the cast, and honestly every one of them is a main character:

• result — the resulting point 💖
• x — scalar to multiply with p
• p — point to multiply with x
• y — scalar to multiply with q
• q — point to multiply with y
• curve — curve 🌈 (yes, that's the whole description, and honestly? tasteful.)

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🔥 DESCRIPTION

So it gives you result = x * p + x * q over the curve. That's what the page says, verbatim, no notes 🙈 — I'm just the messenger, bestie.

The way this is a serve: it works faster than doing two multiplications and then an addition. Two separate multiplies plus a plain add = extra work; this = one glow-up of a function. Efficiency ate, periodt. 💅🔥

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🦋 SEE ALSO

The kernel file ./include/crypto/internal/ecc.h, and then a whole friend group of related pages — literally the entire squad, go say hi to all of them:

• ecc_swap_digits(9)
• ecc_digits_from_bytes(9)
• ecc_is_key_valid(9)
• ecc_gen_privkey(9)
• ecc_make_pub_key(9)
• crypto_ecdh_shared_secret(9)
• ecc_is_pubkey_valid_partial(9)
• ecc_is_pubkey_valid_full(9)
• vli_is_zero(9)
• vli_cmp(9)
• vli_sub(9)
• vli_from_be64(9)
• vli_from_le64(9)
• vli_mod_inv(9)
• vli_mod_mult_slow(9)
• vli_num_bits(9)
• ecc_alloc_point(9)
• ecc_free_point(9)
• ecc_point_is_zero(9)

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That's the whole page, bestie — no cap. 💜 Sourced all cute from ./include/crypto/internal, dated October 2026, and that last ecc_point_mult_shamir(9) bit at the bottom? That's just the title waving goodbye to you on the way out. Byeee 🎀🦋⭐