blake2s_final(9)

💖 NAME 💖

blake2s_final — finishes computing a BLAKE2s hash. That's it, that's the main character. ✨

Hii bestie! You're reading blake2s_final(9) from the Kernel API Manual, and it's giving "last step of the hash, but make it cute." 🎀

✨ SYNOPSIS ✨

void blake2s_final (struct blake2s_ctx *ctx , u8 *out );

No cap, that's the exact signature. Copy it, don't freestyle it. 💅

🦋 ARGUMENTS 🦋

• ctx — the context to finalize; must have been initialized. Like, do not bring an uninitialized context to this function, bestie. 🙈
• out — (output) the resulting BLAKE2s hash. Its length will be equal to the outlen that was passed to blake2s_init or blake2s_init_key. So yes, outlen from setup is still relevant — iykyk. ✨

💜 DESCRIPTION 💜

Okay so after finishing, this zeroizes ctx. So the caller does not need to do it. That's literally the function handling its own cleanup — obsessed. 🫶

🌈 CONTEXT 🌈

Any context. Fr fr, any. 💖

🌟 SEE ALSO 🌟

• Kernel file ./include/crypto/blake2s.h — plus struct blake2s_ctx(9), blake2s_init(9), blake2s_init_key(9), blake2s_update(9), and blake2s(9). The whole squad, periodt. 👑

And that's the page, bestie. Source/version is ./include/crypto, dated October 2026 — mwah 💋