sha3_update(9)

🌸 NAME 🌸

hey bestie, welcome to sha3_update(9) from the Kernel API Manual 💖 — this one is all about updating a SHA-3 digest context with input data. iconic little helper, no cap.

---

✨ SYNOPSIS ✨

void sha3_update (struct sha3_ctx *ctx , const u8 *in , size_t in_len );

---

🎀 ARGUMENTS 🎀

• ctx — the context you're updating; it must have been initialized first, bestie, don't skip that part 🙈
• in — the input data
• in_len — length of the input data in bytes

---

🦋 DESCRIPTION 🦋

okay so you can call this any number of times to add data to a SHA3-224, SHA3-256, SHA3-384, or SHA3-512 digest — which one you're feeding depends on which init function was called. literally that's the vibe 💅

---

🌈 CONTEXT 🌈

Any context. periodt 🫶

---

👑 SEE ALSO 👑

• Kernel file ./include/crypto/sha3.h struct sha3_ctx(9)
• sha3_zeroize_ctx(9)
• struct shake_ctx(9)
• shake_zeroize_ctx(9)
• sha3_224_init(9)
• sha3_256_init(9)
• sha3_384_init(9)
• sha3_512_init(9)
• sha3_final(9)
• shake128_init(9)
• shake256_init(9)
• shake_update(9)
• shake_squeeze(9)
• sha3_224(9)
• sha3_256(9)
• sha3_384(9)
• sha3_512(9)
• shake128(9)
• shake256(9)

---

mwah 💋 bye bestie — source/version is ./include/crypto, date is October 2026, and this whole page is sha3_update(9) 🫶✨