170 lines
11 KiB
Markdown
170 lines
11 KiB
Markdown
# andOTP - Android OTP Authenticator
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[](https://travis-ci.org/andOTP/andOTP)
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[](https://github.com/andOTP/andOTP/releases/download/v0.6.1/andOTP_v0.6.1.apk)
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[](https://crowdin.com/project/andotp)
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[](https://t.me/andOTP)
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[](https://matrix.to/#/#andOTP:matrix.shadowice.org)
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andOTP is a two-factor authentication App for Android 4.4+.
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It implements Time-based One-time Passwords (TOTP) and HMAC-Based One-Time Passwords (HOTP).
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Simply scan the QR code and login with the generated 6-digit code.
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This project started out as a fork of the great [OTP Authenticator](https://github.com/0xbb/otp-authenticator) app written by [Bruno Bierbaumer](https://github.com/0xbb),
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which has sadly been inactive since 2015. By now almost every aspect of the app has been changed/re-written so the fork status of the Github repository got
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detached upon [user request](https://github.com/andOTP/andOTP/issues/145). But all credit for the original version and for starting this project still goes to Bruno!
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## Help wanted:
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I currently don't have that much time to spend developing andOTP, so any contributions are always welcome.
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Don't worry, I will still continue to develop andOTP it will just slow down from the incredible speed I had going in the beginning.
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## Features:
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* Free and Open-Source
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* Requires minimal permissions
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- Camera access for QR code scanning
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- Storage access for import and export of the database
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* Encrypted storage with two backends:
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- Android KeyStore
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- Password / PIN
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* Multiple backup options:
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- Plain-text
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- Password-protected
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- OpenPGP-encrypted
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* Sleek minimalistic Material Design with three different themes:
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- Light
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- Dark
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- Black (for OLED screens)
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* Great Usability
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* Compatible with Google Authenticator
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* Supported algorithms:
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- TOTP (Time-based One-time Passwords) as specified in [RFC 6238](https://tools.ietf.org/html/rfc6238)
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- HOTP (HMAC-based One-time Passwords) as specified in [RFC 4226](https://tools.ietf.org/html/rfc4226)
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## Backups:
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To keep your account information as secure as possible andOTP only stores it in
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encrypted data files. A part of the encryption key used for that is stored in the
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Android KeyStore system. The advantage of this approach is that the key is kept
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separate from the apps data and, as a bonus, can be backed by hardware cryptography
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(if your device supports this).
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However, due to that separation, backups with 3rd-party apps like Titanium Backup can not
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be used with andOTP. Such apps only backup the encrypted data files and not the encryption
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key, which renders them useless.
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**Please only use the internal backup functions provided by andOTP to backup your accounts!**
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**Everything else WILL result in data loss.**
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### Opening the backups on your PC:
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* [OpenPGP](http://openpgp.org/): OpenPGP can be used to easily decrypt the OpenPGP-encrypted backups on your PC.
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* [andOTP-decrypt](https://github.com/asmw/andOTP-decrypt): A python script written by @asmw to decrypt password-protected backups on your PC (needs more testing).
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### Automatic backups:
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* BroadcastReceivers: AndOTP supports a number of broadcasts to perform automated backups, eg. via Tasker. These will get saved to the defined backup directory. **These only work when KeyStore is used as the encryption mechanism**
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- **org.shadowice.flocke.andotp.broadcast.PLAIN_TEXT_BACKUP**: Perform a plain text backup. **WARNING**: This will save your 2FA tokens onto the disk in an unencrypted manner!
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- **org.shadowice.flocke.andotp.broadcast.ENCRYPTED_BACKUP**: Perform an encrypted backup of your 2FA database using the selected password in settings.
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## Migration:
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Check out [this](https://github.com/andOTP/andOTP/wiki/Migration) wiki page to learn about the different ways to migrate to andOTP from other 2FA apps.
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## Downloads:
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[<img height=80 alt="Get it on Google Play" src="https://play.google.com/intl/en_us/badges/images/generic/en-play-badge.png" />](https://play.google.com/store/apps/details?id=org.shadowice.flocke.andotp)
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[<img height=80 alt="Get it on F-Droid" src="https://f-droid.org/badge/get-it-on.png" />](https://f-droid.org/packages/org.shadowice.flocke.andotp/)
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[<img height=80 alt="Get it on GitHub" src="https://raw.githubusercontent.com/flocke/andOTP/master/assets/badges/get-it-on-github.png" />](https://github.com/andOTP/andOTP/releases)
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**Warning**: All three versions (Google Play, F-Droid and the APKs) are not compatible (not signed by the same key)!
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You will have to uninstall one to install the other, which will delete all your data.
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So make sure you have a **current backup** before switching!
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## Contribute:
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* **Translation**: If you want to help translate andOTP into your language head over to the [Crowdin project](https://crowdin.com/project/andotp).
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* **Bug reports and feature requests**: You can report bugs and request features in the [Issue tracker](https://github.com/andOTP/andOTP/issues) on GitHub.
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* **Requesting thumbnails**: If you are missing a thumbnail you can request it by editing the [wiki](https://github.com/andOTP/andOTP/wiki/Thumbnails#thumbnail-requests)
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* **Discussion and support**:
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- [XDA thread](https://forum.xda-developers.com/android/apps-games/app-andotp-android-otp-authenticator-t3636993) (please keep off-topic to a minimum)
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- Telegram group [@andOTP](https://t.me/andOTP) (if you just want important updates you can mute the group so you only get notified about pinned messages)
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#### Developers:
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* [Jakob Nixdorf](https://github.com/flocke) (Telegram: [@flocke000](https://t.me/flocke000), Reddit: [/u/flocke000](https://www.reddit.com/user/flocke000))
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* [Richy HBM](https://github.com/RichyHBM)
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## Screenshots:
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#### Light theme:
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[<img width=200 alt="Main Activity" src="https://raw.githubusercontent.com/flocke/andOTP/master/assets/screenshots/main_activity.png">](https://raw.githubusercontent.com/flocke/andOTP/master/assets/screenshots/main_activity.png)
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[<img width=200 alt="Settings Activity" src="https://raw.githubusercontent.com/flocke/andOTP/master/assets/screenshots/settings_activity.png">](https://raw.githubusercontent.com/flocke/andOTP/master/assets/screenshots/settings_activity.png)
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[<img width=200 alt="Backup Activity" src="https://raw.githubusercontent.com/flocke/andOTP/master/assets/screenshots/backup_activity.png">](https://raw.githubusercontent.com/flocke/andOTP/master/assets/screenshots/backup_activity.png)
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#### Dark theme:
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[<img width=200 alt="Main Activity" src="https://raw.githubusercontent.com/flocke/andOTP/master/assets/screenshots/main_activity_dark.png">](https://raw.githubusercontent.com/flocke/andOTP/master/assets/screenshots/main_activity_dark.png)
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[<img width=200 alt="Settings Activity" src="https://raw.githubusercontent.com/flocke/andOTP/master/assets/screenshots/settings_activity_dark.png">](https://raw.githubusercontent.com/flocke/andOTP/master/assets/screenshots/settings_activity_dark.png)
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[<img width=200 alt="Backup Activity" src="https://raw.githubusercontent.com/flocke/andOTP/master/assets/screenshots/backup_activity_dark.png">](https://raw.githubusercontent.com/flocke/andOTP/master/assets/screenshots/backup_activity_dark.png)
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#### Black theme:
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[<img width=200 alt="Main Activity" src="https://raw.githubusercontent.com/flocke/andOTP/master/assets/screenshots/main_activity_black.png">](https://raw.githubusercontent.com/flocke/andOTP/master/assets/screenshots/main_activity_black.png)
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[<img width=200 alt="Settings Activity" src="https://raw.githubusercontent.com/flocke/andOTP/master/assets/screenshots/settings_activity_black.png">](https://raw.githubusercontent.com/flocke/andOTP/master/assets/screenshots/settings_activity_black.png)
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[<img width=200 alt="Backup Activity" src="https://raw.githubusercontent.com/flocke/andOTP/master/assets/screenshots/backup_activity_black.png">](https://raw.githubusercontent.com/flocke/andOTP/master/assets/screenshots/backup_activity_black.png)
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## Acknowledgments:
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#### Open-source components used:
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* [AboutLibraries](https://github.com/mikepenz/AboutLibraries)
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* [Apache Commons Codec](https://commons.apache.org/proper/commons-codec/)
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* [Expandable Layout](https://github.com/AAkira/ExpandableLayout)
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* [Floating Action Button Speed Dial](https://github.com/leinardi/FloatingActionButtonSpeedDial)
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* [material-intro](https://github.com/heinrichreimer/material-intro)
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* [MaterialProgressBar](https://github.com/DreaminginCodeZH/MaterialProgressBar)
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* [OpenPGP API library](https://github.com/open-keychain/openpgp-api)
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* [VNTNumberPickerPreference](https://github.com/vanniktech/VNTNumberPickerPreference)
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* [ZXing Android Embedded](https://github.com/journeyapps/zxing-android-embedded)
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#### Code examples used:
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* [Android-ItemTouchHelper-Demo](https://github.com/iPaulPro/Android-ItemTouchHelper-Demo/tree/master/app/src/main/java/co/paulburke/android/itemtouchhelperdemo/helper)
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* [Code Parts from Google's Android Samples](https://android.googlesource.com/platform/development/+/master/samples/Vault/src/com/example/android/vault)
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* [LetterBitmap](http://stackoverflow.com/questions/23122088/colored-boxed-with-letters-a-la-gmail)
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* [DimensionConverter](https://stackoverflow.com/questions/8343971/how-to-parse-a-dimension-string-and-convert-it-to-a-dimension-value)
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#### Previously used open-source components:
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* [FABsMenu](https://github.com/jahirfiquitiva/FABsMenu)
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* [LicensesDialog](https://github.com/PSDev/LicensesDialog)
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#### Previously used code examples:
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* [FloatingActionMenuAndroid](https://github.com/pmahsky/FloatingActionMenuAndroid)
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## License:
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```
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Copyright (C) 2017-2018 Jakob Nixdorf <andotp@shadowice.org>
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Copyright (C) 2015 Bruno Bierbaumer
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Permission is hereby granted, free of charge, to any person obtaining a copy of
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this software and associated documentation files (the "Software"), to deal in the
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Software without restriction, including without limitation the rights to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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the Software, and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
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OR OTHER DEALINGS IN THE SOFTWARE.
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```
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