MD5(9)

MD5(9) — bestie, it's the kernel dev manual 💖

okay so real talk, this is a page from the Kernel Developer's Manual, section 9, and it's all about the message digest routines 💅 no cap, this is the MD5 module, and she's iconic.

✨ NAME ✨

MD5, MD5Init, MD5Transform — message digest routines 🎀

🌸 SYNOPSIS 🌸

#include <sys/types.h>
#include <sys/md5.h>

void
MD5Init(MD5_CTX *buf);

void
MD5Transform(uint32_t buf[4], const unsigned char block[64]);

like literally copy that exactly bestie, don't freestyle the includes 🙈

🦋 DESCRIPTION 🦋

so the MD5 module implements the RSA Data Security, Inc. MD5 Message-Digest Algorithm (MD5, yes that one 👑). It produces a 128-bit MD5 Digest of data. that's the whole vibe.

• MD5Init — must be called just before MD5Transform() is gonna be used to produce a digest. The buf argument is the storage for the digest being produced on subsequent calls to the MD5Transform() routine. so like, it's the lil setup moment before the main character walks in ✨
• MD5Transform — this is the core of the MD5 algorithm fr fr. It alters an existing MD5 hash kept in buf to reflect the addition of 64 characters of new data passed in the block argument. 64 characters, that's the number, don't @ me 💀

lowkey important: MD5Init first, then MD5Transform. the order is giving choreography and you gotta follow it 🫶

💜 COPYRIGHTS 💜

ngl the receipts are cute:

The code for MD5 transform was taken from Colin Plumb's implementation, which has been placed in the public domain 🌈. The MD5 cryptographic checksum was devised by Ronald Rivest, and is documented in RFC 1321, "The MD5 Message Digest Algorithm" ⭐

👑 SEE ALSO? no bestie, that's it 💅

this page is short and she ate anyway. every line, every flag, every fact — preserved, periodt.

and that's a wrap, my love 🎀 this one came from the Debian crew, dated April 17, 1996 — yes, the girls were already slaying in '96 💖 and it lives at the very bottom of the page as MD5(9), which is also literally the title up top. full circle, iconic, bye bestie 🦋✨