md5(9)

💅 md5 — like, the whole page, bestie

okay so this is md5(9) from the Kernel API Manual, and honestly? she's a one-shot icon. no state, no setup, no drama — you hand her your data, she hands you back a digest. periodt.

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✨ NAME ✨

md5 — compute an MD5 message digest in one shot 🎀

like, one shot. not a whole init/update/final situation. we love a low-maintenance queen.

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🌸 SYNOPSIS 🌸

void md5 (const u8 *data , size_t len , u8 out[static MD5_DIGEST_SIZE]
);

that's it. that's the whole vibe. she returns void because the answer goes in out, iykyk 💅

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🦋 ARGUMENTS 🦋

• data — the message data. literally the stuff you want digested, bestie 🍓
• len — the data length in bytes. yes, bytes. count them carefully, ngl 🌸
• out — (output) the resulting MD5 message digest. this is where the magic lands, and it's sized MD5_DIGEST_SIZE because we're not animals 💖

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👑 CONTEXT 👑

Any context. ANY. call her from wherever, she's not picky — no locks to worry about, no sleepies allowed, just vibes ✨🫶

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🔥 SEE ALSO 🔥

so if you want the full saga, there's a whole friend group:

• Kernel file ./include/crypto/md5.h
• struct md5_ctx(9)
• md5_init(9)
• md5_update(9)
• md5_final(9)
• struct hmac_md5_key(9)
• struct hmac_md5_ctx(9)
• hmac_md5_preparekey(9)
• hmac_md5_init(9)
• hmac_md5_init_usingrawkey(9)
• hmac_md5_update(9)
• hmac_md5_final(9)
• hmac_md5(9)
• hmac_md5_usingrawkey(9)

like I said. whole friend group. the incremental md5 girlies AND the entire hmac_md5 extended universe 😭👑

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k bye, this page lives in ./include/crypto, dated October 2026 — mwah, catch you in the next manpage bestie 💜🧚