aes_gcm_encrypt_final(9)

okay so bestie, welcome to aes_gcm_encrypt_final(9) in the Kernel API Manual ✨ this is the little finisher for AES-GCM encryption, and we’re gonna get into it 💖

🌸 NAME 🌸

aes_gcm_encrypt_final — Finish encrypting a message with AES-GCM

✨ SYNOPSIS ✨

void aes_gcm_encrypt_final (struct aes_gcm_ctx *ctx , u8 *authtag );

🎀 ARGUMENTS 🎀

• ctx — An AES-GCM context 🫶
• authtag — The output authentication tag. Length is the authtag_len that was passed to aes_gcm_preparekey 💅

🦋 DESCRIPTION 🦋

This also zeroizes ctx, so the caller doesn't need to do it. periodt ✨

🌈 CONTEXT 🌈

Any context. literally any. no cap 💀

👑 SEE ALSO 👑

go read these besties, they’re all right here:

• Kernel file ./include/crypto/aes-gcm.h
• struct aes_gcm_key(9)
• struct aes_gcm_ctx(9)
• aes_gcm_preparekey(9)
• aes_gcm_encrypt(9)
• aes_gcm_decrypt(9)
• aes_gcm_init(9)
• aes_gcm_auth_update(9)
• aes_gcm_encrypt_update(9)
• aes_gcm_decrypt_update(9)
• aes_gcm_decrypt_final(9)

source/version: ./include/crypto · date: October 2026 · page: aes_gcm_encrypt_final(9) — mwah, bye bestie 💋🎀