Hey everyone, I've been working on a small Android app called CipherBrick Pro and I'm looking for beta testers before I push it to the public Play Store.
What it does:
CipherBrick Pro lets you encrypt and decrypt messages using AES-256-GCM encryption, the same standard used by banks and governments, entirely on your device. There are no accounts to create, no servers involved, and no data ever leaves your phone. Once you've opened it once, it works completely offline.
The idea is simple: you and another person share an encryption key, you encrypt a message, and send the scrambled output through whatever channel you want. Text, email, chat, doesn't matter. Only someone with the matching key can decrypt it.
A few things that make it a bit different:
- A Key Exchange Wizard that helps two people securely establish a shared key using a text string. No need to figure out how to safely share a key manually. Though it gets technical, with the use of ECDH, no private info gets shared and you get to exchange a randomly generated key + salt securely.
- Audio key transmission. You can actually broadcast and receive encryption keys over sound. This is for a scenario where you might be air gapped, have no network access, no camera access, etc. It provides a unique way to transfer encrypted messages from one device to another via sound using ggwave (kind of like morse code but a bit more modern).
- FIDO2 hardware key support (YubiKey, etc.) for binding encryption to a physical security key
- Available in 9 languages
- Open source
What I need: Just install it via the beta link and give it a try. Any feedback is welcome: bugs, confusing UI, anything that feels off. Even if you just install it and poke around, that helps.
More info: https://cipherbrick.com
Beta link: Join the Beta
If you find a bug or have feedback, leave a comment on this post or send me a DM.
Thanks!
EDIT: The beta link will be active shortly, currently going through a quick review by Google. I'll update this post once it's live. Thanks for your patience!