GPG agent
Android · Linux · macOS · Windows
Use GPG keys from desktop tools and compatible Android apps without exporting private keys.
Keyguard can act as a GPG agent, so gpg and git sign and decrypt with the
keys in your vault. Apps that support OpenKeychain can use Keyguard as their
OpenPGP provider.
The private key stays in Keyguard. You see which app wants which key, and you decide whether it can use it.