seedvault/README.md

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# Seedvault
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[![Build](https://github.com/seedvault-app/seedvault/workflows/Build/badge.svg?branch=master)](https://github.com/seedvault-app/seedvault/actions?query=branch%3Amaster+workflow%3ABuild)
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A backup application for the [Android Open Source Project](https://source.android.com/).
If you are having an issue/question, please look at our [FAQ](../../wiki/FAQ).
## Components
* [Local Contacts Backup](contactsbackup) - an app that backs up local on-device contacts
* [Storage library](storage) - a library handling efficient backup of files
* [Seedvault app](app) - the main app where all functionality comes together
## Features
- Backup application data to a flash drive.
- Restore application data from a flash drive.
- User-friendly encryption using a mnemonic phrase (BIP39).
- Automatic daily backups that run in the background.
## Requirements
- Android 11
For older versions of Android, check out [the branches](https://github.com/seedvault-app/seedvault/branches).
## Getting Started
- Check out [the wiki](https://github.com/seedvault-app/seedvault/wiki) for information on building the application with
AOSP.
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## What makes this different?
This application is compiled with the operating system and does not require a rooted device for use.
It uses the same internal APIs as `adb backup` which is deprecated and thus needs a replacement.
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## Permissions
* `android.permission.BACKUP` to back up application data.
* `android.permission.ACCESS_NETWORK_STATE` to check if there is internet access when network storage is used.
* `android.permission.MANAGE_USB` to access the serial number of USB mass storage devices.
* `android.permission.WRITE_SECURE_SETTINGS` to change system backup settings and enable call log backup.
* `android.permission.QUERY_ALL_PACKAGES` to get information about all installed apps for backup.
* `android.permission.INSTALL_PACKAGES` to re-install apps when restoring from backup.
* `android.permission.MANAGE_EXTERNAL_STORAGE` to backup and restore files from device storage.
* `android.permission.ACCESS_MEDIA_LOCATION` to backup original media files e.g. without stripped EXIF metadata.
* `android.permission.FOREGROUND_SERVICE` to do periodic storage backups without interruption.
* `android.permission.MANAGE_DOCUMENTS` to retrieve the available storage roots (optional) for better UX.
## Contributing
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Bug reports and pull requests are welcome on GitHub at https://github.com/seedvault-app/seedvault.
This project aims to adhere to the [official Kotlin coding style](https://developer.android.com/kotlin/style-guide).
## Third-party tools
> **⚠ WARNING**: the Seedvault developers make no guarantees about external software projects.
> Please be aware that disclosing your secret recovery key to other software has security risks.
The [Seedvault backup parser](https://github.com/tlambertz/seedvault_backup_parser)
allows you to decrypt and inspect your backups.
It can also re-encrypt them.
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## License
This application is available as open source under the terms of the [Apache-2.0 License](https://opensource.org/licenses/Apache-2.0).