For clients like Kube we need a concept how to deal with encryption (and other related topics?):

• End to end encryption (do we need other encryption i.e. for group chat?)
• pEp
• keymanagement?
• trustmanagement?
• trustmodel
• how do we deal with search in encrypted content (not possible without decrypting)
• do we want anything beyond gpg
• rsa is slow and elliptic curve not widely used, what's the strategy
• encrypted headers and stuff (we have absolutely nothing to show that way)