sha256(9)

okay bestie, welcome to sha256(9) from the Kernel API Manual 💖 — it’s the one-shot SHA-256 girlie, and she is literally here to hash your whole message and dip ✨ no cap.

💖 NAME 💖

sha256 — compute a SHA-256 message digest in one shot 🫶

✨ SYNOPSIS ✨

void sha256 (const u8 *data , size_t len , u8 out[static
SHA256_DIGEST_SIZE] );

🎀 ARGUMENTS 🎀

• data — the message data 💌
• len — the data length in bytes 📏
• out — (output) the resulting SHA-256 message digest 🔥

🦋 CONTEXT 🦋

Any context. Literally any context, bestie — no special vibe check required 💅

🌈 SEE ALSO 🌈

The whole iconic extended universe, iykyk:

• 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_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_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)

signed, sealed, slayed by ./include/crypto, dated October 2026 — this was sha256(9) 💅💖✨