verify_signature(9)

💖 verify_signature(9) — a Kernel API Manual moment 💖

ok so bestie, welcome to verify_signature(9) from the Kernel API Manual — this is the little function that kicks off asymmetric-key signature verification, and honestly? she's short, she's sweet, she's giving "one job and she does it" energy. 🎀

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✨ NAME ✨

verify_signature — initiate the use of an asymmetric key to verify a signature. that's it. that's the whole vibe. 🦋

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🌸 SYNOPSIS 🌸

int verify_signature (const struct key *key , const struct public_key_signature *sig );

like, look at her. two pointers, one int, zero drama. 💅

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🫶 ARGUMENTS 🫶

• key — the asymmetric key you're verifying against, aka the main character of this whole operation 👑
• sig — the signature you wanna check, aka the thing under investigation 🔍

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⭐ DESCRIPTION ⭐

so the actual tea: it returns 0 if successful, or else an error. no cap, that's the entire description. one line. iconic behavior, honestly. 😭

fr fr tho — that means you gotta check the return value. 0 = slay, anything else = not slay. don't be out here ignoring it, bestie, i'm begging 🙈

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🧚 SEE ALSO 🧚

• Kernel file ./crypto/asymmetric_keys/signature.c — go read the source, iykyk 📖
• query_asymmetric_key(9) — the sibling function, go say hi 💜

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and that's the page!! mwah 🍓 this came from the kernel source tree at ./crypto/asymmetric_keys, and the version/date stamp on it is October 2026 — so yeah, it's from the future, she's ahead of her time ✨💀 see u in the next manpage, bestie!! 🌈🎀