rpgm-archive-decrypter-lib

BLAZINGLY :fire: fast and tiny library for decrypting RPG Maker XP/VX/VXAce .rgssad/.rgss2a/.rgss3a archives.

This project essentially is a rewrite of uuksu's RPGMakerDecrypter in Rust as a library, but it also implements archive encryption, and can be run in no_std environments.

And since it's implemented in Rust 🦀🦀🦀, it's also very tiny, clean, and performant.

Used in my rpgm-archive-decrypter CLI tool and RPGMTranslate.

Example

Decrypt

use rpgmad_lib::{Decrypter};
use std::{path::PathBuf, fs::{read, write, create_dir_all}};

let mut archive_content: Vec<u8> = read("C:/Game/Game.rgss3a").unwrap();

let mut decrypter = Decrypter::new();
let decrypted_entries = decrypter.decrypt(&mut archive_content).unwrap();

for entry in decrypted_entries {
    let path = String::from_utf8_lossy(&entry.path);
    let output_path = PathBuf::from("C:/Game").join(path.as_ref());

    if let Some(parent) = output_path.parent() {
        create_dir_all(parent).unwrap();
    }

    write(output_path, entry.data).unwrap();
}

Encrypt

use rpgmad_lib::{Decrypter, ArchiveEntry, Engine};
use std::{fs::{read, write}, borrow::Cow};

let data = read("Graphics/Tilesets/Tileset1.png").unwrap();
let archive_entries = [ArchiveEntry {
    path: b"Graphics/Tilesets/Tileset1.png",
    data: &data
}];

let mut decrypter = Decrypter::new();

let encrypted_buffer_size = Decrypter::encrypted_buffer_size(&archive_entries, Engine::VXAce);
let mut archive_buffer = Vec::new();
archive_buffer.resize(encrypted_buffer_size, 0);

decrypter.encrypt(&archive_entries, Engine::VXAce, &mut archive_buffer);

write("./Game.rgss3a", archive_buffer).unwrap();

Features

default - default feature enables the usage of std. If you're using this crate in a no_std environment for some reason, you need to disable default feature.
serde - enables serde serialization/deserialization for Error type.

Support

Me, the maintainer of this project, is a poor college student from Eastern Europe.

If you could, please consider supporting us through:

Even if you don't, it's fine. We'll continue to do as we right now.

License

Project is licensed under WTFPL.