Tool to play around with Atelier Resleriana ( レスレリアーナのアトリエ ) encrypted AssetBundle files
| Name | Size | Type | Default | Comment |
|---|---|---|---|---|
| Magic Number | 4 | []byte | "Aktk" | |
| Version | 2 | uint16 | 0x01 | |
| Reserved | 2 | uint16 | 0x00 | Why does the game checks it must be 0, what's the purpose |
| Encryption | 4 | enum | 0x01 | 0x00 => None, 0x01 => Encrypted |
| MD5 Checksum | 16 | []byte | Hash of the rest of the file whether the file encrypted or not |
A modified version of HChaCha which generates 512-bytes xor block.
Each block generation do 8 normal HChaCha block generation with chained initial state.
I'll explain details of the format later, you can check out ./encryptor/keygen.go for details.
Unsafe zero-copy type conversion is used to improve performance