Aegis Authenticator

Aegis Authenticator is a free, secure and open source two-factor app for Android. It exists to cover what other authenticator apps leave out, namely proper encryption and backups.

The app supports HOTP and TOTP, the industry standard algorithms, which makes it compatible with thousands of services and with anything already enrolled in Google Authenticator. The vault is encrypted with AES-256-GCM and unlocked either by a password stretched with scrypt or by biometrics through the Android Keystore.

The rest is about getting entries in and keeping them findable.

• Adding entries: scan a QR code or an image of one, type the details manually, or import from apps such as Authy, andOTP, FreeOTP, Microsoft Authenticator and Steam, with root access needed for some.
• Organization: alphabetic or custom sorting, grouping, advanced entry editing, search by name or issuer, and custom or automatically generated icons.
• Screen protection: screen capture prevention and tap to reveal keep codes out of screenshots.
• Backups: the vault exports in plaintext or encrypted form, and automatic backups go to a location of your choosing.
• Icon packs: no pack is official, but the community maintains several and the format is documented for building your own.

Aegis is available on the Google Play Store and on F-Droid. Releases on Google Play and GitHub are signed with the same key, so an APK can be checked with apksigner against the certificate fingerprints published in the repository. The interface follows Material design with light, dark and AMOLED themes, and the project is licensed under GPL v3.