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!
Versions
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.
Download F-Droid
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This version requires Android 4.0.3 or newer.
It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
Permissions
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view network connections
Allows the app to view information about network connections such as which networks exist and are connected.
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view Wi-Fi connections
Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices.
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take pictures and videos
This app can take pictures and record videos using the camera while the app is in use.
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run foreground service
Allows the app to make use of foreground services.
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run foreground service with the type "specialUse"
Allows the app to make use of foreground services with the type "specialUse"
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have full network access
Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
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control Near Field Communication
Allows the app to communicate with Near Field Communication (NFC) tags, cards, and readers.
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show notifications
Allows the app to show notifications
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read the contents of your shared storage
Allows the app to read the contents of your shared storage.
(12L)
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read audio files from shared storage
Allows the app to read audio files from your shared storage.
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read image files from shared storage
Allows the app to read image files from your shared storage.
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read video files from shared storage
Allows the app to read video files from your shared storage.
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read sync settings
Allows the app to read the sync settings for an account. For example, this can determine whether the People app is synced with an account.
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run at startup
Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
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prevent phone from sleeping
Allows the app to prevent the phone from going to sleep.
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toggle sync on and off
Allows an app to modify the sync settings for an account. For example, this can be used to enable sync of the People app with an account.
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org.sufficientlysecure.keychain.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK
11 MiB
PGP Signature
|
Build Log
-
This version requires Android 4.0.3 or newer.
It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
Permissions
-
view network connections
Allows the app to view information about network connections such as which networks exist and are connected.
-
view Wi-Fi connections
Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices.
-
take pictures and videos
This app can take pictures and record videos using the camera while the app is in use.
-
run foreground service
Allows the app to make use of foreground services.
-
run foreground service with the type "specialUse"
Allows the app to make use of foreground services with the type "specialUse"
-
have full network access
Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
-
control Near Field Communication
Allows the app to communicate with Near Field Communication (NFC) tags, cards, and readers.
-
show notifications
Allows the app to show notifications
-
read the contents of your shared storage
Allows the app to read the contents of your shared storage.
(12L)
-
read audio files from shared storage
Allows the app to read audio files from your shared storage.
-
read image files from shared storage
Allows the app to read image files from your shared storage.
-
read video files from shared storage
Allows the app to read video files from your shared storage.
-
read sync settings
Allows the app to read the sync settings for an account. For example, this can determine whether the People app is synced with an account.
-
run at startup
Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
-
prevent phone from sleeping
Allows the app to prevent the phone from going to sleep.
-
toggle sync on and off
Allows an app to modify the sync settings for an account. For example, this can be used to enable sync of the People app with an account.
-
org.sufficientlysecure.keychain.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK
12 MiB
PGP Signature
|
Build Log
-
This version requires Android 4.0.3 or newer.
It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
Permissions
-
view network connections
Allows the app to view information about network connections such as which networks exist and are connected.
-
view Wi-Fi connections
Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices.
-
take pictures and videos
This app can take pictures and record videos using the camera while the app is in use.
-
run foreground service
Allows the app to make use of foreground services.
-
have full network access
Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
-
control Near Field Communication
Allows the app to communicate with Near Field Communication (NFC) tags, cards, and readers.
-
read the contents of your shared storage
Allows the app to read the contents of your shared storage.
-
read sync settings
Allows the app to read the sync settings for an account. For example, this can determine whether the People app is synced with an account.
-
run at startup
Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
-
prevent phone from sleeping
Allows the app to prevent the phone from going to sleep.
-
modify or delete the contents of your shared storage
Allows the app to write the contents of your shared storage.
-
toggle sync on and off
Allows an app to modify the sync settings for an account. For example, this can be used to enable sync of the People app with an account.
Download APK
10 MiB
PGP Signature
|
Build Log
