OpenKeychain

About

"OpenKeychain is a free and open-source mobile app for the Android operating system that provides strong, user-based encryption which is compatible with the OpenPGP standard. This allows users to encrypt, decrypt, sign, and verify signatures for text, emails, and files." [1]

Apps Compatible with OpenKeychain

• K-9 is compatible with OpenKeychain and you can contribute to K-9 translations here.

OpenKeychain Blog

Translate OpenKeychain!

Localization Resources

OpenKeychain Localizer Instructions

References

[1] Wikipedia