  The security of communication in everyday life becomes very important. On the
other hand, all existing encryption protocols require from user additional
knowledge end resources. In this paper we discuss the problem of public key
distribution between interested parties. We propose to use a popular social
media as a channel to publish public keys. This way of key distribution allows
also easily connect owner of the key with real person institution (what is not
always easy). Recognizing that the mobile devices become the main tool of
communication, we present description of mobile application that uses proposed
security methods.
