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pana_dvd: fix unaligned data decryption

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theubusu
2026-04-29 21:22:47 +02:00
parent 9c42fb23c2
commit 588b52de14
1 changed files with 5 additions and 7 deletions
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src/formats/pana_dvd/mod.rs
+5 -7
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@@ -158,6 +158,7 @@ fn extract_file(app_ctx: &AppContext, file_reader: &mut Cursor<Vec<u8>>, header_
file_reader.seek(SeekFrom::Start(module.offset as u64))?; file_reader.seek(SeekFrom::Start(module.offset as u64))?;
//special treatment of MAIN
if module.name() == "MAIN" { if module.name() == "MAIN" {
println!("- Extracting MAIN..."); println!("- Extracting MAIN...");
extract_main(file_reader, key, &output_path)?; extract_main(file_reader, key, &output_path)?;
@@ -168,14 +169,11 @@ fn extract_file(app_ctx: &AppContext, file_reader: &mut Cursor<Vec<u8>>, header_
continue continue
} }
let data = common::read_exact(file_reader, module.size as usize)?; let data = common::read_exact(file_reader, (module.size as usize + 7) & !7)?; //read to the nearest multiple of 8 (needed for unalinged data decryption)
let mut dec_data =if module.name() != "VGD " { //VGD is not encrypted? println!("- Decrypting...");
println!("- Decrypting..."); let mut dec_data = decrypt_data(&data, &key);
decrypt_data(&data, &key) dec_data.truncate(module.size as usize); //discard padding
} else {
data
};
if module.name().starts_with("DRV") { if module.name().starts_with("DRV") {
println!("- Extracting DRIVE firmware..."); println!("- Extracting DRIVE firmware...");