By Minoru Kuribayashi (auth.), Tetsu Iwata, Masakatsu Nishigaki (eds.)
This ebook constitutes the refereed court cases of the sixth foreign Workshop on protection, IWSEC 2011, held in Tokyo, Japan, in November 2011. The 14 revised complete papers offered during this quantity have been rigorously reviewed and chosen from forty five submissions. They deal with all present matters in details and computing device safety comparable to foundations of protection, defense in networks and ubiquitous computing platforms, and defense in genuine lifestyles functions. The papers are prepared in topical sections on software program safety and reliability; cryptographic protocol; pairing and id established signature; malware detection; mathematical and symmetric cryptography; public key encryption.
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Extra info for Advances in Information and Computer Security: 6th International Workshop, IWSEC 2011, Tokyo, Japan, November 8-10, 2011. Proceedings
4 Recovery from Faults When terminal faults occur in Linux, the OS issues a synchronous signal, which if not handled will cause a process to terminate. For instance, an invalid memory reference will cause a SIGSEGV signal to be delivered by the OS. REASSURE intercepts such signals to identify errors occurring within RPs and initiate recovery. Table 1 lists all the signals intercepted by REASSURE to recover from program faults. Note that other OSs have similar mechanisms to synchronously notify applications of such errors.
REASSURE provides two modes of operation to accommodate blocking RPs. The ﬁrst caters to applications that expect a very high rate of faults, while the second oﬀers faster operation as long as the rate of faults is reasonable (evaluated in Sect. 3). Always-on blocking mode operates by conditionally instrumenting every block of instructions with an analysis routine that blocks the executing thread when a certain ﬂag, which is asserted by the blocking-RP upon entry, is set. , we can quickly activate/deactivate blocking) and is thus more appropriate for applications where faults occur very frequently.
In ASSURE, RPs are the product of oﬄine analysis that is triggered when a new and unknown error occurs, but they can also be the result of manual analysis. For example, RPs can by identiﬁed by examining the memory dump produced when a program abnormally terminates. , one that will allow it to resume normal operation). Regrettably, deploying RPs using ASSURE is not straightforward, but it demands that various complex systems are present. For instance, to support execution rollback, applications are placed inside the Zap [19,15] virtual execution environment, while RP code is injected using Dyninst .