crypto_shash_export_core(9)

💫 crypto_shash_export_core(9) 💫

okay so real talk, this one is from the Kernel API Manual, and it's genuinely such a useful little function bestie, let me put you on 🫶

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✨ NAME ✨

crypto_shash_export_core — extract core state for message digest 💅

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🌸 SYNOPSIS 🌸

int crypto_shash_export_core (struct shash_desc *desc , void *out );

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🎀 ARGUMENTS 🎀

• desc — this is the reference to the operational state handle whose state is being exported, like that's the whole vibe of it 🔥
• out — the output buffer, and it has to be of sufficient size so it can hold the hash state. no cap, size it right or it's not gonna slay 😭

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🦋 DESCRIPTION 🦋

okay so what this does: it exports the hash state without the partial block buffer.

that's it. that's the whole thing. the partial block buffer is literally not invited to this party 🙈

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👑 CONTEXT 👑

softirq or process context 🌈 (yes those are the two, that's the whole list, don't come for me)

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⭐ RETURN ⭐

• 0 if the export creation was successful 💖
• < 0 if an error occurred 💀

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🌸 SEE ALSO 🌸

• Kernel file ./include/crypto/internal/hash.h 🎀
• crypto_ahash_export_core(9)
• crypto_ahash_import_core(9)
• crypto_shash_import_core(9)

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that's the whole page bestie, go export some state, ily 💜

ok and one lil sign-off from the source at ./include/crypto/internal, dated October 2026 — periodt, that's the meta, that's the lore 🧚✨