10,000 - 50,000 downloads

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OpenKeychain is an OpenPGP implementation for Android. It serves as a key management tool for encryption, decryption, signature generation, and signature verification.

== K-9 Mail Support is Coming! ==
The latest alpha version of K-9 Mail supports OpenKeychain:

• OpenKeychain is Open Source and Free Software (GPLv3+) (-> verifiable cryptography)
• All basic OpenPGP operations: encrypt/decrypt/sign/verify
• NFC/QR code key exchange
• Key management (import/export/sign/upload)
• Import/export of GPG key rings and exported keys from/to the SD card
• Basic keyserver support
• Easy API

Help translating OpenKeychain! Everybody can participate at


• Full network access: Internet access is ONLY used for key server queries
• Control Near Field Communication: To exchange keys via NFC
• Modify or delete the contents of your USB storage: To export keys to the sd card
• Read the contents of your USB storage: To import keys from the sd card

openkeychain, open keychain, openpgp keychain, openpgp, gpg, pgp, keychain

Tags: openpgp keychain beta, openpgp keychain s3 crash, openpgp open source, openkeychain k-9, rich amies gpg.

Recently changed in this version

* Fixing crashes introduced in v2.8
* Experimental ECC support
* Experimental Yubikey support (signing-only with imported keys)

* Key edit: awesome new design, key revocation
* Key import: awesome new design, secure keyserver connections via hkps, keyserver resolving via DNS SRV records
* New key creation screen: autocompletion of name and email based on your personal Android accounts
* File encryption: awesome new design, support for encrypting multiple files

Comments and ratings for OpenKeychain
  • (72 stars)

    by Bill L on 06/04/2014

    There is a problem with keys that have certain attributes (I don't know whether the problem is with the Cipher attributes, the Digest attributes, the Compression attributes, or some combination of the three). NOT handled correctly by OpenPGP Keychain: Cipher: AES256, AES192, AES, CAST5, 3DES Digest: SHA256, SHA1, SHA384, SHA512, SHA224 Compression: ZLIB, BZIP2, ZIP, Uncompressed Handled c

  • (72 stars)

    by Daniel Stastka on 29/03/2014

    Perfect App, only how register a App K9?

  • (72 stars)

    by Sam Lanning on 11/03/2014

    The app works really well! I have a couple of suggestions though: - Can you also 0 second cache of password for key rather than a minimum of 15 seconds - Are there plans to implement "key validity" and "owner trust" with the storage of public keys in the contacts part of the app? Thanks for creating such a wonderful app! =) Thanks, Sam.

  • (72 stars)

    by William Thieme on 06/03/2014

    An attractively-designed GnuPG app! I've waited so long for this!

  • (72 stars)

    by Patrick Sharp on 03/03/2014

    I've tried them all, some seem to have lost momentum some just aren't there yet, but this bad boy is the bee's knees and then some. This program is bad a$$

  • (72 stars)

    by Max Schlecht on 18/02/2014

    Except when I try to decrypt from clipboard it tells me error. Wrong character in line 0 java. I had to save the clipboard into .asc file then decrypt from file. Other than that awesome!

  • (72 stars)

    by Mister Speedy on 09/02/2014

    Error: "Nothing to import". My file was pubring .asc which was created from desktop using gpg4usb