hmac_sha224_update(9)

okay bestie, you found hmac_sha224_update(9) in the Kernel API Manual — and she’s here to update your HMAC-SHA224 context 💖✨

🎀 NAME 🎀

hmac_sha224_update — Update an HMAC-SHA224 context with message data

🌟 SYNOPSIS 🌟

void hmac_sha224_update (struct hmac_sha224_ctx *ctx , const u8 *data ,
size_t data_len );

💖 ARGUMENTS 💖

• ctx — the HMAC context to update; must have been initialized. No cap, she has to be initialized first, that’s the whole vibe 🫶
• data — the message data. The actual message bytes, bestie 📦
• data_len — the data length in bytes. Literally the length in bytes, no guessing 🔢

🌸 DESCRIPTION 🌸

This can be called any number of times. Any number of times, bestie — that’s the flex. Keep calling her, she’s ready 💅✨

🦋 CONTEXT 🦋

Any context. Periodt. Any context, no special main-character setup needed 🌈

👑 SEE ALSO 👑

• Kernel file ./include/crypto/sha2.h
• 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_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)

mwah 💋 — this page comes from ./include/crypto, dated October 2026, in the Kernel API Manual. bye bestie, go update that context! 🫶✨