hmac_sha512_init(9)

🎀 hmac_sha512_init(9) 🎀

okay so bestie, welcome to the Kernel API Manual ✨ this one's a little function with main character energy, and it's about to get its HMAC-SHA512 moment 💅

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✨ NAME ✨

hmac_sha512_init — literally just initialize an HMAC-SHA512 context for a new message 🦋

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🌸 SYNOPSIS 🌸

void hmac_sha512_init (struct hmac_sha512_ctx *ctx , const struct
       hmac_sha512_key *key );

no cap, that's the whole signature 🫶

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💖 ARGUMENTS 💖

• ctx — (output) the HMAC context you're initializing, she's getting filled in 💫
• key — the prepared HMAC key, already done up and ready to go 👑

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🌈 DESCRIPTION 🌈

so if you don't need incremental computation, maybe just consider hmac_sha512 instead? like, it's right there, it's iconic, it does the whole thing for you 💅✨

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🦋 CONTEXT 🦋

Any context. literally any. she's flexible like that 🙈

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⭐ SEE ALSO ⭐

Kernel file ./include/crypto/sha2.h and all her friends, because the guest list is long and everyone's invited 🎀:

• 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), 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_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 vibe check, bestie 🧚 this page lives in ./include/crypto, dated October 2026, and it's fr fr the hmac_sha512_init(9) moment we all deserved 💜✨ slay 💅