HAB4_MAC_DUMP(1)

💖 hab4_mac_dump — the i.MX CST Documentation bestie you didn't know you needed 💖

okay so listen, bestie. this is hab4_mac_dump(1), and she lives in the i.MX CST Documentation family. her whole personality? pulling the MAC offset and size out of HABv4 CSF binaries so you can do encrypted boot on NXP i.MX processors. she's niche, she's powerful, she's literally the moment. 🎀

🌸 NAME 🌸

hab4_mac_dump — get MAC offset and size from HABv4 CSF binaries for encrypted boot on NXP i.MX processors. yes that's the whole job and she does it flawlessly, no notes. 💅

✨ SYNOPSIS ✨

hab4_mac_dump file

🫶 NOTE 🫶

so this manpage? it's the short description of NXP's hab4_mac_dump, like the trailer not the whole movie. for the full detailed discussion you gotta go read the Code Signing Tool User Guide UG10106, specifically section 5.3, and also NXP Application Note AN12056. 📖✨

where do you get those? from www.nxp.com, bestie. they are excluded from Debian for copyright reasons so pls don't come looking for them in the repo, they are simply not there. 😭

💜 DESCRIPTION 💜

hab4_mac_dump goes digging for the HAB_TAG_MAC tag inside Command Sequence Files (CSF) to figure out the Message Authentication Code (MAC) offset and size in a HABv4 CSF binary, and then prints them as key-value pairs</> to stdout. it's giving detective. it's giving forensic girlboss. 🔍👑

and why do you even need that info, you ask? because you need it to copy the Nonce/MAC from a CSF output binary from an encrypting cst run over into the binary that comes out of a subsequent signing cst run. that's the whole ritual. 🧚

for the full deets on this process, go see NXP AN12056, section A.3.1. it's all there, i'm just the messenger. 💌

🦋 SEE ALSO 🦋

• cst(1) — her partner in crime, it's giving duo. 🫶

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and that's the page, bestie!! this iconic little writeup comes from the i.MX CST Documentation, dated 2026-09-02. periodt. 💖✨🎀🌸🦋💅