sha384(9)

💅 sha384 — the one-shot SHA-384 glow-up (Kernel API Manual, bestie)

okay so picture this: you've got a blob of bytes and you need a SHA-384 digest of it, like, right now, no multi-step saga, no state to babysit. That's this function. One call, one digest, done. She's the "compute SHA-384 message digest in one shot" girlie and honestly? Iconic. ✨

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🌸 NAME 🌸

sha384 — Compute SHA-384 message digest in one shot. no cap, that's the whole gig.

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🎀 SYNOPSIS 🎀

void sha384 (const u8 *data , size_t len , u8 out[static
SHA384_DIGEST_SIZE] );

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🦋 ARGUMENTS 🦋

• data — the message data. like, the actual bytes you're hashing, bestie. this is the main character.
• len — the data length in bytes. how much of data we're actually looking at, fr fr.
• out — (output) the resulting SHA-384 message digest. this one's write-only energy: she gets filled in with the digest and she's literally declared [static SHA384_DIGEST_SIZE], so the size is non-negotiable 💅

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🌈 CONTEXT 🌈

Any context. yes, any. no special locks, no "only from process context" gatekeeping, no vibe check required — you're free 🫶

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⭐ SEE ALSO ⭐

Kernel file ./include/crypto/sha2.h, plus the whole extended family — she did NOT come alone, the entourage is huge and we're listing every single one:

• struct sha224_ctx(9), sha224_init(9), sha224_update(9), sha224_final(9), sha224(9), struct hmac_sha224_key(9), struct hmac_sha224_ctx(9), hmac_sha224_preparekey(9), hmac_sha224_init(9), hmac_sha224_init_usingrawkey(9), hmac_sha224_update(9), hmac_sha224_final(9), hmac_sha224(9), hmac_sha224_usingrawkey(9)
• struct sha256_ctx(9), sha256_init(9), sha256_update(9), sha256_final(9), sha256(9), sha256_finup_2x(9), sha256_finup_2x_is_optimized(9), struct hmac_sha256_key(9), struct hmac_sha256_ctx(9), hmac_sha256_preparekey(9), hmac_sha256_init(9), hmac_sha256_init_usingrawkey(9), hmac_sha256_update(9), hmac_sha256_final(9), hmac_sha256(9), hmac_sha256_usingrawkey(9)
• struct sha384_ctx(9), sha384_init(9), sha384_update(9), sha384_final(9) — the incremental squad, if one-shot isn't your era
• struct hmac_sha384_key(9), struct hmac_sha384_ctx(9), hmac_sha384_preparekey(9), hmac_sha384_init(9), hmac_sha384_init_usingrawkey(9), hmac_sha384_update(9), hmac_sha384_final(9), hmac_sha384(9), hmac_sha384_usingrawkey(9)
• struct sha512_ctx(9), sha512_init(9), sha512_update(9), sha512_final(9), sha512(9), struct hmac_sha512_key(9), struct hmac_sha512_ctx(9), hmac_sha512_preparekey(9), hmac_sha512_init(9), hmac_sha512_init_usingrawkey(9), hmac_sha512_update(9), hmac_sha512_final(9), hmac_sha512(9), hmac_sha512_usingrawkey(9)

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and that's the whole page, bestie — go forth and hash 🧚‍♀️

okay signing off for real: this little number lives in ./include/crypto, it's dated October 2026, and you can find her under sha384(9). mwah 💖