# Library for ISO Rebuild Data (LibIRD)

.NET library for generating, writing, and reading IRD files. Functionality is provided for deterministically generating IRDs such that a redump ISO and key have a 1-to-1 correspondence with an IRD file.

## What is an IRD?

IRD files contain a summary of what data is on a PlayStation 3 disc. It can be used to rebuild ISOs from files (JB folders). IRD files are also useful for decrypting ISOs after they have been dumped on a PC blu-ray drive, such as for the purposes of legally emulating your PS3 games.

## How to use IRDKit

IRDKit is a tool that allows direct use of LibIRD functionality from the command line interface. The basic usage is:
```
irdkit create game.iso
```
For detailed usage, read more [here](IRDKit).

## Using the LibIRD library

LibIRD was originally made for creating reproducible, redump-style IRDs when dumping PS3 discs with [MPF](https://github.com/SabreTools/MPF). If you wish to integrate LibIRD into your own application, read the examples [here](LibIRD).

## Limitations

Currently, LibIRD does not produce correct IRDs for ISOs with non-contiguous files. Therefore, do not consider this library "stable" until v1.0.0 is released.