OpenKeychain: Easy PGP

Hardware Security SDK

About this app

OpenKeychain helps you communicate more privately and securely. It uses encryption to ensure that your messages can be read only by the people you send them to, others can send you messages that only you can read, and these messages can be digitally signed so the people getting them are sure who sent them. OpenKeychain is based on the well established OpenPGP standard making encryption compatible across your devices and systems. For a list of compatible software for Windows, Mac OS, and other operating systems consult http://openpgp.org/software/.

Modern encryption is based on digital “keys”. OpenKeychain stores and manages your keys, and those of the people you communicate with, on your Android smartphone. It also helps you find others’ keys online, and exchange keys. But its most frequent use is in using those keys to encrypt and decrypt messages.

★ Integration with other Apps:
• K-9 Mail
• Conversations
• and many more…

★ Open Source: OpenKeychain is designed to be trustworthy. It’s Free Software with no secrets; anyone can examine and validate every bit of it (Source code available at https://github.com/open-keychain/open-keychain)

★ Independent Security Audit: The auditing company Cure53 performed an intensive security audit of OpenKeychain. The security experts summarize their final result with "[...] none of the spotted issues were considered to be of a critical severity in terms of security implications. The latter is a significant and impressive result for an app of this complexity and relevance."

★ Permissions: Because OpenKeychain is Free Software, anyone can validate that the permissions are indeed only required for the listed features.
• In-app purchases: Donate to the developers
• Identity: Pre-fill name and email addresses
• Contacts: Connect keys to your contacts (only offline)
• Photos/Media/Files: Import/export keys from SD card
• Camera: Scan QR Codes to add other people's keys
• Others: Internet permission to retrieve keys, NFC permission to use YubiKeys

Starting with Android 6, permissions are requested when required in-app!

Ratings and reviews

DOES NOT WORK. It USED to work when I used it a year or two ago. I thought it was amazing because it was so fast and easy. But now it doesn't encrypt anything, ive gone in to every setting and tried to change everything I possibly could, even tried it on a different phone! It say its working all fine. But at the end it will only add a signature at the bottom of the text that you want to encrypt. Will not actually encrypt your text. Even though it says it did!

Great app for creating pgp keys. Simple interface and easily create new keys. I also appreciate how it automatically uses the strongest encryption available. However, I would appreciate the option to choose encryption ciper and strength. I never would have known it uses the strongest encryption unless I inspected the key after making it. The option during setup is just not there, and that's a little disconcerting. I guess I'VE just been spoiled by kleopatra on PC....

Honestly, there is no reason why people should be giving this app such low ratings. If you want to import a key from clipboard - keys -> + button (bottom right) -> import from file -> 3 dots top right hand corner -> read from clipboard. Done. Oh and to encrypt a message using a key ... Go to the key and click on the little text box. Top right is copy. This app is very easy to use and one of the best free ones I've found. No issues or complaints. I even transferred my keys between phones.

What's new

* Updates for Android 14
* Support NitroKey 3
* ECC 25519 is now the default generated key type
* Various bug fixes