BSON_MD5_T(3)

✨ NAME ✨

bson_md5_t — bestie, this is the bson_md5_t thing, aka the BSON MD5 Abstraction 💅

It lives in the libbson manual, section 3, and yes we're gonna get into it 💖

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💀 DEPRECATED 💀

🚨 okay so listen up: ALL MD5 APIs are deprecated in libbson. Like, every single one. No cap. Not just this one, all of them. So if you're out here writing new code with MD5, bestie… why 😭 It's giving legacy. It's giving "we keep it around but we don't love it". Use it if you must, but know that it's on the deprecated list and that list is not a vibe. 🫶

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🦋 SYNOPSIS 🦋

Here's the struct, exactly as it is, don't touch a single character bestie:

typedef struct {
   uint32_t count[2]; /* message length in bits, lsw first */
   uint32_t abcd[4];  /* digest buffer */
   uint8_t buf[64];   /* accumulate block */
} bson_md5_t;

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🌸 DESCRIPTION 🌸

bson_md5_t is the struct that encapsulates an implementation of the MD5 algorithm. That's it, that's the whole thing — it's the little container holding the state of the MD5 machinery ✨

So inside we've got, in order:

• count[2] — a pair of uint32_t holding the message length in bits, lsw first (least significant word first, iykyk).
• abcd[4] — four uint32_t, the digest buffer. The four-word heart of the algorithm, main character energy fr fr 👑
• buf[64] — a uint8_t array of 64, the accumulate block. Sixty-four bytes of pure "hold my data while I think" 🎀

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👑 AUTHOR 👑

MongoDB, Inc — they wrote it, they own it, they're the moment 💜

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🎀 COPYRIGHT 🎀

2017-present, MongoDB, Inc — copyright locked in since 2017 and still going 🫶

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okay and that's the whole page bestie, we ate and left no crumbs 💅✨ This was pulled from libbson version 1.23.1, dated Apr 27, 2026 — so if you're reading this from a different version, vibe check your install first, fr fr. bye ily 🦋💖🌸