Title
Key Insulation and Intrusion Resilience over a Public Channel
Abstract
Key insulation (KI) and Intrusion resilience (IR) are methods to protect a user's key against exposure by utilizing periodic communications with an auxiliary helper. But existing work assumes a secure channel between user and helper. If we want to realize KI or IR in practice we must realize this secure channel. This paper looks at the question of how to do this when the communication is over what we are more likely to have in practice, namely a public channel such as the Internet or a wireless network. We explain why this problem is not trivial, introduce models and definitions that capture the desired security in a public channel setting, and provide a complete (and surprising) answer to the question of when KI and IR are possible over a public channel. The information we provide is important to guide practitioners with regard to the usage of KI and IR and also to guide future research in this area.
Year
DOI
Venue
2009
10.1007/978-3-642-00862-7_6
IACR Cryptology ePrint Archive
Keywords
DocType
Volume
intrusion resilience,key insulation,wireless network,periodic communication,public channel setting,existing work,auxiliary helper,secure channel,public channel
Conference
2009
ISSN
Citations 
PageRank 
0302-9743
7
0.53
References 
Authors
18
3
Name
Order
Citations
PageRank
Mihir Bellare1164371481.16
Shanshan Duan2633.74
Adriana Palacio350621.53