OpenKeychain: Easy PGP

In-app purchases
4.1
3.85K reviews
500K+
Downloads
Content rating
Everyone
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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!
Updated on
Apr 30, 2021

Data safety

Developers can show information here about how their app collects and uses your data. Learn more about data safety
No information available
4.1
3.85K reviews
J T
October 2, 2020
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.
68 people found this review helpful
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Frank Zen
December 9, 2020
The signature validation doesn't really do anything when you do it with a file. Everything else works well but I can't verify the authenticity of my files without signature verification. Defeats the purpose... UPDATE: Reading the reviews this seems to have something to do with this app not being able to read the clipboard on Android 10. This is technically an Android issue but I hope a workaround can be made.
74 people found this review helpful
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A Google user
February 23, 2020
Missing a key feature (for me, at least). While it does have the ability to utilize two-key cryptography on both files and presumably emails via the clipboard, it seemingly lacks the ability to sign or verify signatures on emails. While this doesn't render the app useless, it does make it less than useful to me unless I'm willing to replace my email client. It's been uninstalled.
12 people found this review helpful
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What's new

5.7
* Fixes for Curve25519
* IDEA cipher is now considered insecure
5.6
* Compatibility with Android 10 and higher
* Several bug fixes
5.5
* Fix decryption from clipboard on Android 10
5.4
* Add WKD Advanced method
* Add COTECH Security Key Shop
5.3
* Use keys.openpgp.org as default keyserver
5.2
* Improved key import from clipboard
5.1
* Support for Ledger Nano S
* Support Web Key Directory (WKD) search
* Fixed potential API security issue