sha224_update(9)

💅 sha224_update(9) — the Kernel API Manual moment

okay so bestie, welcome to sha224_update, a page straight out of the Kernel API Manual ✨. It's a tiny little function, but it's literally doing the Lord's work inside the SHA-224 machinery, and we're gonna talk about it.

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🎀 NAME

sha224_update — the girlies whose whole job is updating a SHA-224 context with message data. Fresh data in, context goes brrr. 💖

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🦋 SYNOPSIS

void sha224_update (struct sha224_ctx *ctx , const u8 *data , size_t len
);

That return type being void? Iconic. It gives nothing and it slays anyway. 😌

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🌸 ARGUMENTS

• ctx — the context to update. And listen 👏 it must have been initialized first, okay? no cap, don't be out here passing a vibe-fresh uninitialized context, that's not the move 🙈
• data — the message data. the actual content. the main character. ⭐
• len — the data length in bytes. how many bytes of data we're working with, fr fr 🍓

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💜 DESCRIPTION

You can call this any number of times. That's it. That's the whole description. Feed it data in chunks, call it again, call it a third time, keep going — the context just keeps absorbing your bytes like a bestie who never gets tired of your lore. 🔥

lowkey the most chill function in the whole crypto header ngl — no drama, no weird edge cases in the docs, just any number of times 💅

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🌈 CONTEXT

Any context. Like, genuinely any. She's not picky, she's not exclusive, she fits wherever you need her 🫶✨

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👑 SEE ALSO

okay bestie, buckle up, because this SEE ALSO list is long and honestly it ate 💀 — every single one of these is here, no skipping:

• Kernel file ./include/crypto/sha2.h
• struct sha224_ctx(9)
• sha224_init(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)
• sha384(9)
• 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)

like... the whole SHA-2 family reunion plus every HMAC cousin showed up. obsessed. 💖✨

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and that's the page!! this lil beauty lives over in ./include/crypto and the version tag says October 2026 — so when you're flipping through sha224_update(9) and it all makes sense, just remember who told you 🧚💜 bye bestie, go hash something 🎀