LIBKECCAK_HMAC_RESET(3)

🦋 NAME 🦋

okay bestie, welcome to LIBKECCAK_HMAC_RESET(3) from the Library Functions Manual 💅

libkeccak_hmac_reset — reinitialise a HMAC-hashing state, and yes that's the whole name vibe ✨

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✨ SYNOPSIS ✨

first up, you're gonna want this include, no cap:

#include <libkeccak.h>

then here's the function signature, exactly as it is:

int libkeccak_hmac_reset(struct libkeccak_hmac_state *state, const void *key, size_t key_length);

Link with -lkeccak. that's the synopsis, periodt 🫶

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💅 DESCRIPTION 💅

The libkeccak_hmac_reset() function reinitialises an HMAC-hashing state with a new key. key_length is the length of the key in bits. If key is NULL, the key remains unchanged — so you can swap in a new key or just leave the existing one alone, your call, main character energy 🔥

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🌈 RETURN VALUES 🌈

The libkeccak_hmac_reset() function returns 0 for successful completion. On error, -1 is returned and errno is set to describe the error. so 0 is the slay outcome, and -1 means check errno, bestie 😭

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🔥 ERRORS 🔥

The libkeccak_hmac_reset() function may fail for any reason specified for the functions malloc(3) and realloc(3) — allocation gremlins can absolutely ruin the vibe, so yeah, errno is your friend here 💀

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🎀 SEE ALSO 🎀

go read these too, iykyk 🧚

• libkeccak_hmac_create(3)
• libkeccak_hmac_initialise(3)
• libkeccak_hmac_set_key(3)
• libkeccak_hmac_wipe(3)
• libkeccak_hmac_fast_free(3)
• libkeccak_hmac_free(3)
• libkeccak_hmac_fast_destroy(3)
• libkeccak_hmac_destroy(3)

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xoxo, your LIBKECCAK bestie — catch you on the LIBKECCAK_HMAC_RESET(3) page, and that's the footer vibe: source/version LIBKECCAK, page LIBKECCAK_HMAC_RESET(3), no date printed so we're not inventing one 🫶🎀