%% You should probably cite rfc8723 instead of this I-D. @techreport{ietf-perc-double-11, number = {draft-ietf-perc-double-11}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-ietf-perc-double/11/}, author = {Cullen Fluffy Jennings and Paul Jones and Richard Barnes and Adam Roach}, title = {{SRTP Double Encryption Procedures}}, pagetotal = 18, year = , month = , day = , abstract = {In some conferencing scenarios, it is desirable for an intermediary to be able to manipulate some parameters in Real Time Protocol (RTP) packets, while still providing strong end-to-end security guarantees. This document defines a cryptographic transform for the Secure Real Time Protocol (SRTP) that uses two separate but related cryptographic operations to provide hop-by-hop and end-to-end security guarantees. Both the end-to-end and hop-by-hop cryptographic algorithms can utilize an authenticated encryption with associated data (AEAD) algorithm or take advantage of future SRTP transforms with different properties.}, }