# License

## 📄 Software Licensing

### Kernel Components

::: info GPL-2.0 License
The files in the "kernel" directory are under GPL-2.0-only license
:::

**License:** [GPL-2.0-only](https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html)

### Application Core

::: tip GPL-3.0 License
All other parts (except mentioned below) are under GPL-3.0 or later license
:::

**License:** [GPL-3.0 or later](https://www.gnu.org/licenses/gpl-3.0.html)

## Artwork & Brand Assets

### Launcher Icons & Character Art

::: warning Copyright Notice
Special licensing requirements for anime character artwork
:::

The images of the files `ic_launcher(?!.*alt.*).*` with anime character emoticons have specific copyright terms:

**Copyright Holders:**

- **Anime Character Art:** [五十根大虾仁](https://space.bilibili.com/370927)
- **Brand Intellectual Property:** [明风OuO](https://space.bilibili.com/274939213)
- **Vectorization:** @MiRinChan

**License Requirements:**

1. **Creative Commons License:** [CC BY-NC-SA 4.0](https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.txt)
2. **Author Authorization:** Required from both copyright holders
3. **Attribution:** Must credit all contributors listed above

::: details Usage Requirements
Before using these artistic assets, you must:

- Comply with Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license
- Obtain authorization from both original authors for use of artistic content
- Provide proper attribution to all contributors
  :::

## 📋 License Summary

| Component            | License                                                                   | Notes                                 |
| -------------------- | ------------------------------------------------------------------------- | ------------------------------------- |
| **Kernel Files**     | [GPL-2.0-only](https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html) | Files in `/kernel/` directory         |
| **Application Code** | [GPL-3.0+](https://www.gnu.org/licenses/gpl-3.0.html)                     | Main application components           |
| **Character Art**    | [CC BY-NC-SA 4.0](https://creativecommons.org/licenses/by-nc-sa/4.0/)     | + Author authorization required       |
| **Brand Assets**     | Mixed Licensing                                                           | See specific attribution requirements |

## 🔗 License Links

- **GPL-2.0:** [Full License Text](https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html)
- **GPL-3.0:** [Full License Text](https://www.gnu.org/licenses/gpl-3.0.html)
- **CC BY-NC-SA 4.0:** [Full License Text](https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.txt)

## 📞 Licensing Questions

For questions about licensing or usage permissions:

1. **Code Licensing:** Refer to respective GPL license terms
2. **Artwork Usage:** Contact original authors for authorization
3. **Commercial Use:** Review CC BY-NC-SA 4.0 restrictions
4. **Distribution:** Ensure compliance with all applicable licenses

::: tip Compliance Note
When redistributing or modifying SukiSU-Ultra, ensure you comply with all applicable licenses and attribution requirements for each component.
:::