sha384_update(9)

💅 NAME 💅

okay bestie, this is sha384_update(9) from the Kernel API Manual, and the name says it all: sha384_update — update a SHA-384 context with message data. that's the assignment, and it's iconic in its simplicity. 💖

✨ SYNOPSIS ✨

void sha384_update (struct sha384_ctx *ctx , const u8 *data , size_t len
       );

🎀 ARGUMENTS 🎀

• ctx — the context to update; must have been initialized. no cap, that part is mandatory.
• data — the message data.
• len — the data length in bytes.

🌸 DESCRIPTION 🌸

okay so the description is short and sweet: This can be called any number of times. literally any number — call it once, call it again, call it a hundred times, the page does not put a limit on it. keep updating that context with message data and you're good. 💅

🦋 CONTEXT 🦋

context vibe check: Any context. any context, bestie — no special context restrictions listed here. ✨

🔥 SEE ALSO 🔥

Kernel file ./include/crypto/sha2.h is the source-file bestie, and the whole crypto fam pulled up. all of these refs are exactly as listed:

• 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_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 💋 — final footer tea: source/version ./include/crypto, date October 2026, page sha384_update(9). byeee, go slay that context 🫶