sha512_init(9)

💅 sha512_init(9) — like, the glow-up before the hash ✨

okay so real talk, this page lives in the Kernel API Manual, section 9 ofc, and it's about sha512_init — the little "bestie, clear the slate" call that gets a SHA-512 context ready for a brand-new message. 🎀

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🌸 NAME 🌸

sha512_init — get a SHA-512 context all set up and ready for a fresh new message 🦋

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✨ SYNOPSIS ✨

void sha512_init (struct sha512_ctx *ctx );

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🫶 ARGUMENTS 🫶

• ctx — the context you're initializing, aka the lil container that's about to get its whole life together 💅

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🔥 DESCRIPTION 🔥

It sets up your SHA-512 context so you can feed it a new message. That's it, that's the vibe, no cap.

💡 okay but here's the tea: if you don't actually need incremental computation — like, you're not doing the whole piece-by-piece update then final situation — consider sha512 instead. way less work, same energy. ✨

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🌈 CONTEXT 🌈

Any context. literally any. it's giving "universally welcome" 👑

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🍓 SEE ALSO 🍓

Kernel file ./include/crypto/sha2.h — go be nosy, it's all in there 🧚

the sha224 fam 💜

• struct sha224_ctx(9)
• sha224_init(9)
• sha224_update(9)
• sha224_final(9)
• sha224(9)

the hmac-sha224 crew 🎀

• 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)

sha256 things 💖

• 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)

hmac-sha256 squad 🦋

• 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)

sha384 besties 🌸

• struct sha384_ctx(9)
• sha384_init(9)
• sha384_update(9)
• sha384_final(9)
• sha384(9)

hmac-sha384 gang 💅

• 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)

the sha512 main characters 👑

• struct sha512_ctx(9)
• sha512_update(9)
• sha512_final(9)
• sha512(9)

hmac-sha512 icons ⭐

• 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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that's the whole page, mwah 💋 — brought to you from ./include/crypto, dated October 2026, and yeah that's the source and the date, so now you know fr fr. go init that context, you're gonna slay 🙈💜