OpenKeychain
Encrypt files and communications with OpenPGP

OpenKeychain helps you communicate more privately and securely. It uses high-quality modern 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 operating systems.

Modern encryption is based on digital "keys". OpenKeychain stores and manages your keys, and those of the people you communicate with, on your Android. It also helps you find others' keys online, and interchange keys by touching devices. But its most frequent use is in using those keys to encrypt and decrypt messages.

OpenKeychain integrates with

  • K-9 Mail
  • Conversations
  • Password Store
  • oandbackup
  • and many more…

OpenKeychain is designed to be trustworthy. It’s Free Software with no secrets; anyone can examine and validate every bit of it.

Permissions:

  • Full network access: To query keyservers
  • Near Field Communication: To exchange keys via NFC; Yubikey NEO support
  • Storage: To import/export keys from sd card
  • Identity/Contact: To pre-fill name, email, and search queries; integration with Android's contacts

License: GPL-3.0+

Website: https://www.openkeychain.org/
Issue Tracker: https://github.com/openpgp-keychain/openpgp-keychain/issues
Source Code: https://github.com/openpgp-keychain/openpgp-keychain
Changelog: https://github.com/open-keychain/open-keychain/blob/HEAD/OpenKeychain/src/main/res/raw/help_changelog.md
Donate: https://www.openkeychain.org/

For full details and additional technical information, see this application's page on the F-Droid wiki.

Packages

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications, and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Version 4.4.1 - Added on 2017-05-06

This version requires Android 4.0.3 or newer.

This version is built and signed by F-Droid, and guaranteed to correspond to the source tarball below.

download apk 12 MB (+31 kB) GPG Signature
source tarball 23.5 MB
no permission changes
view permissions [ 10, 5]

Version 4.3 - Added on 2017-04-27

This version requires Android 4.0.3 or newer.

This version is built and signed by F-Droid, and guaranteed to correspond to the source tarball below.

download apk 12 MB (+61 kB) GPG Signature
source tarball 23.4 MB
no permission changes
view permissions [ 10, 5]

Version 4.2.4 - Added on 2017-02-08

This version requires Android 4.0.3 or newer.

This version is built and signed by F-Droid, and guaranteed to correspond to the source tarball below.

download apk 11.9 MB GPG Signature
source tarball 23.4 MB
view permissions [ 10, 5]


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