KAT/docs/kia_v6.md

Kia V6 Protocol

Rust module: src/protocols/kia_v6.rs
Reference: REFERENCES/ProtoPirate/protocols/kia_v6.c

Overview

Kia V6 uses Manchester encoding at 200/400 µs (level convention inverted vs Flipper). 144 bits in three parts: part1 (64) + part2 (64) + part3 (16); each part stored inverted. Long preamble of 601 pairs; sync bits 1,1,0,1 then data. AES-128 decryption with key derived from KIA V6 A and B keystores (types 11 and 12) and XOR masks.

Timing

Parameter	Value	Notes
Short	200 µs	±100 µs
Long	400 µs	±100 µs
Preamble	601 pairs
Min bits	144

Encoding

Manchester (event mapping 0/2/4/6 for level convention). Three 64/64/16-bit segments, each inverted when stored.

Frame Layout (144 bits)

• Part1: 64 bits (inverted)
• Part2: 64 bits (inverted)
• Part3: 16 bits (inverted)

AES-128 decrypt with key = f(keystore_a, keystore_b, XOR_MASK_LOW, XOR_MASK_HIGH). Serial/button/counter and CRC extracted after decryption.

Decoder Steps

1. Reset — Wait for preamble.
2. CheckPreamble — Count 601 pairs; detect sync pattern 1,1,0,1.
3. Data — Manchester decode 144 bits; invert segments; AES-128 decrypt; validate CRC8; return fields.

Encoder

Decode-only in KAT (no encoder in reference).

Frequencies

433.92 MHz.

Keystore

Requires KIA V6 A and B keys (keystore types 11 and 12: kia_v6_a_key, kia_v6_b_key). XOR masks applied to derive AES key.