Java Certification Authority

Development of client / server application that use Bluetooth as the communication protocol. This communication must provide similar security to that in SSL using digital certificates provided by a Certification Authority. The porpuse is: Develop a bluetooth chat, and we have cellphone A and cellphone B, and a laptop as the CA. The CA must only create x509 v3 certificates. The process goes as follows: 1) First of all A and B send request of certification to de CA, and CA sends a valid certificate to each other. 2) then, if A wants to chat with B, A sends its certificate to B, 3) B sends A's certificate to the CA, 4) CA validates the certification and 5) tells B that it is correct, 6) so B accepts A. 7)Then B sends its certificate to A, 8) the same process here until CA validates B's certificate and tells A that it is correct. 9)After this A and B can chat.