leviathan
48 lines
1.5 KiB
Markdown
48 lines
1.5 KiB
Markdown
# Kia V6 Protocol
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**Rust module:** `src/protocols/kia_v6.rs`
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**Reference:** `REFERENCES/ProtoPirate/protocols/kia_v6.c`
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## Overview
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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.
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## Timing
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| Parameter | Value | Notes |
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|-----------|--------|---------|
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| Short | 200 µs | ±100 µs |
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| Long | 400 µs | ±100 µs |
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| Preamble | 601 pairs | |
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| Min bits | 144 | |
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## Encoding
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Manchester (event mapping 0/2/4/6 for level convention). Three 64/64/16-bit segments, each inverted when stored.
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## Frame Layout (144 bits)
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- Part1: 64 bits (inverted)
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- Part2: 64 bits (inverted)
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- Part3: 16 bits (inverted)
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AES-128 decrypt with key = f(keystore_a, keystore_b, XOR_MASK_LOW, XOR_MASK_HIGH). Serial/button/counter and CRC extracted after decryption.
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## Decoder Steps
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1. **Reset** — Wait for preamble.
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2. **CheckPreamble** — Count 601 pairs; detect sync pattern 1,1,0,1.
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3. **Data** — Manchester decode 144 bits; invert segments; AES-128 decrypt; validate CRC8; return fields.
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## Encoder
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Decode-only in KAT (no encoder in reference).
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## Frequencies
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433.92 MHz.
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## Keystore
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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.
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