DocumentCode :
1504905
Title :
A Survey and Analysis of Media Keying Techniques in the Session Initiation Protocol (SIP)
Author :
Gurbani, Vijay K. ; Kolesnikov, Vladimir
Author_Institution :
Bell Labs., Alcatel-Lucent, Naperville, IL, USA
Volume :
13
Issue :
2
fYear :
2011
Firstpage :
183
Lastpage :
198
Abstract :
Exchanging cryptographic keys to encrypt the media stream in the Session Initiation Protocol ({SIP}) has proven difficult. The challenge is to effectively exchange keys while preserving the features of the protocol (e.g., forking, re-targeting, request recursion, etc.), minimizing key exposure to unintended parties, eliminating voice clipping, maintaining end-to-end key privacy, interfacing with PSTN, etc. In this paper, we survey three key management protocols - SDES, ZRTP and DTLS-SRTP - that have been proposed for media keying, and evaluate them for use with SIP. To aid in the evaluation, we first extract (and justify) a core feature set from SIP. We then survey each key management protocol in detail and proceed to analyze the cores of the three protocols against this feature set to annotate their weaknesses and strengths.
Keywords :
cryptographic protocols; feature extraction; media streaming; signalling protocols; cryptographic key; end-to-end key privacy; feature extraction; key management protocol; media keying technique; media stream encryption; session initiation protocol; voice clipping elimination; Codecs; Cryptographic protocols; Cryptography; IEEE news; Internet; Privacy; Protection; Security; Streaming media; Transport protocols; DTLS; SDES; SIP; ZRTP; key exchange; media; security;
fLanguage :
English
Journal_Title :
Communications Surveys & Tutorials, IEEE
Publisher :
ieee
ISSN :
1553-877X
Type :
jour
DOI :
10.1109/SURV.2011.041010.00064
Filename :
5473887
Link To Document :
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