Del av: Proceedings The Tenth International Conference on Networks (ICN 2011), January 23-28, 2011 - St. Maarten, The Netherlands Antilles (International Academy, Research and Industry Association (IARIA), 2011)
The digest access authentication method used in the voice over IP signaling protocol, SIP, is weak. This authentication
method is the only method with mandatory support and widespread adoption in the industry. At the same time,
this authentication method is vulnerable to a serious real-world attack. This poses a threat to VoIP industry installations and solutions. In this paper, we propose a solution that counters attacks on this wide-spread authentication method.