Trf_MDUpdateBuf(3)

💅 Trf_MDUpdateBuf — a whole manual page, bestie

okay so we're doing Trf_MDUpdateBuf(3) today. it lives in the Library Functions Manual, and yes it's giving very much "niche but essential". let's get into it 🎀

✨ NAME ✨

Trf_MDUpdateBuf — the interface to procedures for updating a MD context. that's it, that's the whole name section, and honestly? iconic. 👑

🌸 SYNOPSIS 🌸

#include <transform.h>

void Trf_MDUpdateBuf
(
     void *context,
     unsigned char *buf,
     int bufLen
);

no cap, that's the whole signature. short, sweet, slays. 💅

🦋 PARAMETERS 🦋

• void *context — the state you're updating. it's your state. handle it with care, bestie 🫶
• unsigned char *buf — the buffer that gets hashed into the state. this is the stuff going in 🔥
• int bufLen — how many characters are in that buffer. count them. literally count them. 📏

💖 DESCRIPTION 💖

so a procedure of this type gets called for a character buffer that you want to hash into the final digest. that's the whole job. the way that this one function just... does one thing? obsessed. ✨

lowkey important detail: this procedure is optional. but if you do define it, its definition has precedence over Trf_MDUpdate. so it's giving main character energy and it will absolutely take over the spotlight. 🎤

🌈 SEE ALSO 🌈

like, the entire friend group. say hi to everyone 🫶

Trf_Init(3), Trf_SafeInit(3), Trf_IsInitialized(3), Trf_CreateOptions(3), Trf_DeleteOptions(3), Trf_CheckOptions(3), Trf_SetOption(3), Trf_SetObjOption(3), Trf_QueryOptions(3), Trf_SeekQueryOptions(3), Trf_WriteProc(3), Trf_CreateCtrlBlock(3), Trf_DeleteCtrlBlock(3), Trf_TransformCharacter(3), Trf_TransformBuffer(3), Trf_FlushTransformation(3), Trf_ClearCtrlBlock(3), Trf_QueryMaxRead(3), Trf_Register(3), Trf_ConverterOptions(3), Trf_MDStart(3), Trf_MDUpdate(3), Trf_MDFinal(3), Trf_MDCheck(3), Trf_RegisterMessageDigest(3), Trf_LoadLibrary(3), Trf_XorBuffer(3), Trf_ShiftRegister(3), Trf_FlipRegisterShort(3), Trf_FlipRegisterLong(3), Trf_InitStubs(3)

and that's the page, bestie!! this lil gem came out of c2man off of transform.h, dated 27 August 2002 — like, vintage vintage. periodt. 💜🦋✨