Needs Yubikey NFC interface K9 mails Open Keychain support Yubikey NFC interface to do PGP email Signing and Encryption. This is good because the Yubikey acts as a Smart card feature. The downside is that it only supports PGP and not SMIME cert. If this app supported Yubikey I'd be more inclined to pay for this app. Otherwise I might give up SMIME certs and start using PGP certs on Open Keychain instead.
It is unable to import renewed certificate & has Usability bug It is unable to import renewed or newer certificate & keep getting old which i deleted from crypto & local storage i tried clean cache & data but no success also it has Usability bug when i switch to password manager to fill password for signing or encrypting mail via crypto plugin, crypto plugin UI just don't wait and assumes no pwd or null....this needs to be corrected for smooth operations and for adoption by common users who need hassle free working of signing, encryption, etc it needs urgent fix.
Inconsistent UI Gingerbread UI for password entry.
OK, with caveats This app does what it is supposed to, but not consistently. It is not entirely clear when it has access to certificates, for sometimes it seems to ignore certificates in the displayed list when the time comes to decrypting emails encrypted with the matching private key. More annoying is the fact that when I try to display a text file that I have in my Google Drive, the Crypto Plugin gets always invoked, and I am not given the chance to use anything else. This is not necessarily the fault of this app, but still. Because of the above, I can grant it only two stars.
Please enable the current industry standard algorithms, rather than legacy ones (e.g. SHA-256 instead of SHA-1 for signatures). Or better, allow the end user to select.
Not perfect But the best solution to pgp on android at the moment
+ Fixed an issue with password caching
+ Fixed all kinds of address mismatch issues with sMIME and PGP
+ In some instances, the wrong PG subkey was used for signing/encrypting
+ Fixed a number of stack traces