Lower and upper bounds on obtaining history independence

Abstract. History independent data structures, presented by Micciancio, are data structures that possess a strong security property: even if an intruder manages to get a copy of the data structure, the memory layout of the structure yields no additional information on the data structure beyond its content. In particular, the history of operations applied on the structure is not visible in its memory layout. Naor and Teague proposed a stronger notion of history independence in which the intruder may break into the system several times without being noticed and still obtain no additional information from reading the memory layout of the data structure. An open question posed by Naor and Teague is whether these two notions are equally hard to obtain. In this paper we provide a separation between the two requirements for comparison based algorithms. We show very strong lower bounds for obtaining the stronger notion of history independence for a large class of data structures, including, fo...

• Type: Journal
• Year: 2006
• Where: IANDC
• Authors: Niv Buchbinder, Erez Petrank
• Keywords: Data Structure, History Independence, IANDC 2006, Memory Layout