http://www.rfc-editor.org/rfc/rfc4383.txt
RFC 4383: The Use of Timed Efficient Stream Loss-Tolerant Authentication (TESLA) in the Secure Real-time Transport Protocol (SRTP), M. Baugher, E. Carrara2006-02-01T23:00:00-00:00This memo describes the use of the Timed Efficient Stream Loss-tolerant Authentication (RFC 4082) transform within the Secure Real-time Transport Protocol (SRTP), to provide data origin authentication for multicast and broadcast data streams. [STANDARDS-TRACK]