crypto_sig_sign(9)

💅 crypto_sig_sign(9) — Kernel API Manual

okay so bestie, welcome to the Kernel API Manual page for crypto_sig_sign, and honestly? it's giving "small function, big main character energy" ✨

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✨ NAME ✨

crypto_sig_sign — Invoke signing operation 🖊️

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🌸 SYNOPSIS 🌸

int crypto_sig_sign (struct crypto_sig *tfm , const void *src , unsigned
int slen , void *dst , unsigned int dlen );

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🎀 ARGUMENTS 🎀

• tfm — the signature tfm handle, and no you can't just manifest one into existence, it's allocated with crypto_alloc_sig 🫶
• src — source buffer
• slen — source length
• dst — destination obuffer (yes, "obuffer", that's literally what it says, I'm not fixing it 💀)
• dlen — destination length

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🦋 DESCRIPTION 🦋

This function invokes the specific signing operation for a given algorithm. periodt. that's the whole vibe — you hand it a tfm, it goes and does the signing thing for whichever algorithm that tfm is about 👑

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⭐ RETURN ⭐

Signature size on success 🎉 — and an error code in case of error 😭 (so, like, check it, bestie, fr fr)

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🌈 SEE ALSO 🌈

Kernel file ./include/crypto/sig.h:

• struct crypto_sig(9)
• struct sig_alg(9)
• Generic Public Key Signature API(9)
• crypto_alloc_sig(9)
• crypto_free_sig(9)
• crypto_sig_keysize(9)
• crypto_sig_digestsize(9)
• crypto_sig_maxsize(9)
• crypto_sig_verify(9)
• crypto_sig_set_pubkey(9)
• crypto_sig_set_privkey(9)

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lowkey go read all of those too, they're the friend group and this page is nothing without them 🧚💜

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and that's a wrap! this iconic little page lives in ./include/crypto and it's stamped October 2026 — bye bestie, slay your signing 💅🔥👑