| has gloss | eng: Encrypted Key Transport or EKT is an extension to SRTP that fits within the SRTP framework and reduces the amount of signaling control that is needed in an SRTP session. EKT securely distributes the SRTP master key and other information for each SRTP source, using SRTCP to transport that information. With this method, SRTP entities are free to choose SSRC values as they see fit, and to start up new SRTP sources with new SRTP master keys within a session without coordinating with other entities via signaling or other external means. This fact allows to reinstate the RTP collision detection and repair mechanism, which is nullified by the current SRTP specification because of the need to control SSRC values closely. An SRTP endpoint using EKT can generate new keys whenever an existing SRTP master key has been overused, or start up a new SRTP source to replace an old SRTP source that has reached the packet-count limit. |