crypto_sig_set_privkey(9)

💖 crypto_sig_set_privkey(9) 💖

okay so bestie, welcome to the crypto_sig_set_privkey page from the Kernel API Manual — section 9, kernel-space girlies only ✨ this is where you hand the kernel your private key and let the algorithm do its little decoding ritual 🎀

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✨ NAME ✨

crypto_sig_set_privkey — literally just invoke set private key operation 💅 that's the whole vibe.

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🌸 SYNOPSIS 🌸

int crypto_sig_set_privkey (struct crypto_sig *tfm , const void *key ,
unsigned int keylen );

no cap, that's the whole signature 🫶

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🦋 ARGUMENTS 🦋

• tfm — your tfm handle, the main character of this whole operation 👑
• key — the BER encoded private key, algo OID, paramlen, BER encoded parameters — yes all of that, it's a whole package deal 🎁
• keylen — length of the key, and not including other data, so don't be out here counting the extras fr fr 🙈

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💜 DESCRIPTION 💜

so what this function does is invoke the algorithm specific set key function — and that one is the one that actually knows how to decode and interpret the encoded key and parameters 🧚 lowkey iconic delegation, honestly ✨

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⭐ RETURN ⭐

zero on success 🎉 and an error code in case of error 💀 that's it, that's the deal.

no cap: 0 = slay, anything else = vibe check failed 😭

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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_sign(9)
• crypto_sig_verify(9)
• crypto_sig_set_pubkey(9)

all the siblings, go read them too, iykyk 📚💅

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that's the page, bestie — brought to you by ./include/crypto 💖, dated October 2026 🗓️, and yes the name up top is still crypto_sig_set_privkey(9) in case you forgot already 😭🫶