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v1.2.0: Add 4 new protocols, fix 5 existing, port Kia V6 encoder

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New protocols (from ProtoPirate):
- Mazda V0: 433MHz, pair-based decoding, XOR deobfuscation
- Mitsubishi V0: 868MHz, PWM, bit negation + XOR unscrambling
- Porsche Touareg: 433/868MHz, sync preamble, 24-bit rotate cipher
- Fiat V1 (Magneti Marelli BSI): 433MHz, auto-detected timing variants

Protocol fixes aligned with ProtoPirate reference:
- Kia V1: Fix Manchester level mapping (inverted convention), off-by-one
  bit count, CRC4 simplified to 7 bytes + offset 1
- Kia V2: Fix CRC byte layout (was double-counting nibbles), off-by-one
  bit count, preamble short-HIGH handling
- Fiat V0: Fix endbyte transform (remove (<<1)|1), standard Manchester
  encoder (was differential), 7 btn bits (was 6), gap path fallback
- PSA: Fix modified TEA (XTEA-like dynamic key selection), XOR decrypt
  byte mapping, critical key2_low construction bug, encoder polarity and
  preamble, add key1_high nibble validation, dual preamble patterns
- Ford V0: Add calculate_checksum (sums all serial+count bytes) for encoder

Kia V6 encoder ported:
- Forward AES-128 (SubBytes, ShiftRows, MixColumns, encrypt)
- encrypt_payload: build plaintext, AES encrypt, pack into 3 parts
- Two-pass Manchester upload (640 + 38 preamble pairs)
- fx_field extraction stored in DecodedSignal.extra for encode roundtrip

Updated README, protocol docs, and version bump to 1.2.0.
This commit is contained in:
KaraZajac
2026-03-22 12:05:01 -04:00
parent 84b75ee6b5
commit 48ee413c9b
22 changed files with 2318 additions and 305 deletions
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docs/README.md
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@@ -16,6 +16,10 @@ This folder describes how each keyfob protocol supported by KAT works. Each docu
| Subaru | `subaru.rs` | [subaru.md](subaru.md) |
| VAG | `vag.rs` | [vag.md](vag.md) |
| Fiat V0 | `fiat_v0.rs` | [fiat_v0.md](fiat_v0.md) |
| Fiat V1 | `fiat_v1.rs` | [fiat_v1.md](fiat_v1.md) |
| Mazda V0 | `mazda_v0.rs` | [mazda_v0.md](mazda_v0.md) |
| Mitsubishi V0 | `mitsubishi_v0.rs` | [mitsubishi_v0.md](mitsubishi_v0.md) |
| Porsche Touareg | `porsche_touareg.rs` | [porsche_touareg.md](porsche_touareg.md) |
| Suzuki | `suzuki.rs` | [suzuki.md](suzuki.md) |
| Scher-Khan | `scher_khan.rs` | [scher_khan.md](scher_khan.md) |
| Star Line | `star_line.rs` | [star_line.md](star_line.md) |