STRUCT MD5_CTX(9)

💖 struct md5_ctx(9) 💖

okay so bestie, welcome to the Kernel API Manual — this is the page for struct md5_ctx, and it's literally the little context buddy that keeps track of hashing a message with MD5. it's giving "small struct, big responsibilities" 💅

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✨ NAME ✨

struct md5_ctx — the Context for hashing a message with MD5 🎀

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✨ SYNOPSIS ✨

ok so here's the whole vibe, laid out for u:

struct md5_ctx {
    struct md5_block_state state;
    u64 bytecount;
    u8 buf[MD5_BLOCK_SIZE];
 };

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✨ Members ✨

like, the group chat members of this struct, no cap 🫶

• state — the compression function state. yes bestie, this is the main character of the compression function energy 🔥
• bytecount — the number of bytes processed so far. she's keeping count, periodt 🧮
• buf — the partial block buffer; like, only bytecount % MD5_BLOCK_SIZE bytes in here are actually valid ✨ (the rest is just vibing)

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✨ SEE ALSO ✨

Kernel file ./include/crypto/md5.h — and the whole friend group, fr fr:

• md5_init(9)
• md5_update(9)
• md5_final(9)
• md5(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)

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lowkey go read them all, bestie — iykyk 👑

🌸 that's the whole page!! lives in ./include/crypto, dated October 2026, and it's a whole era 🦋 stay hydrated, hash responsibly, mwah 💜