Editing Key management (section)

===Multicast group key management===
Group key management means managing the keys in a group communication. Most of the group communications use [[multicast]] communication so that if the message is sent once by the sender, it will be received by all the users. The main problem in multicast group communication is its security. In order to improve the security, various keys are given to the users. Using the keys, the users can encrypt their messages and send them secretly. IETF.org released RFC 4046, entitled Multicast Security (MSEC) Group Key Management Architecture, which discusses the challenges of group key management.<ref>{{cite journal|url=https://tools.ietf.org/html/rfc4046 |title=Multicast Security (MSEC) Group Key Management Architecture |newspaper=Ietf Datatracker |date=2005-04-01 |doi=10.17487/RFC4046 |access-date=2017-06-12|last1=Baugher |first1=M. |last2=Canetti |first2=R. |last3=Dondeti |first3=L. |last4=Lindholm |first4=F. |url-access=subscription }}</ref>