I'm using GPG on Mac OS (GPG Suite from gpgtools.org until pEp for iOS and Apple Mail become available) and have a question regarding the compatibility / interoperability of PGP an pEp.
This is the situation:
$Person installed pEp for Thunderbird (via Enigmail).
I wrote a signed Email to $Person which contained my private key.
$Person answered this Email (= $Response).
What I would have expected (thinking pEp is fully compatible / interoperable w/ PGP / GPG):
$Response is encrypted and signed using PGP. and contains the public key of $Person
What actually happened:
$Response contained the public key of $Person but was neither signed nor encrypted.
Do I have a misconception here?
And on a sidenote: Is there a reason why pEp's public key are "only" 2048 bits long?