Improve checking of received handshake keys
Improve checking of received handshake keys

fpletz/fastd,rlei/fastd-android,rlei/fastd-android,rlei/fastd-android,fpletz/fastd,fpletz/fastd,rlei/fastd-android,fpletz/fastd,rlei/fastd-android,fpletz/fastd