This paper presents an approach for conformance testing and fault injection of distributed systems supported by a tool named FSoFIST (Ferry-clip with Software Fault Injection Support Tool). The approach extends the ferryclip concept to cope with fault injection. The ferry-clip concept was aimed at providing a highly modular, flexible and configurable architecture for protocol conformance testin...

Many fault injection tools are available for dependability assessment. Although these tools are good at injecting a single fault model into a single system, they suffer from two main limitations for use in distributed systems: (1) no single tool is sufficient for injecting all necessary fault models; (2) it is difficult to port these tools to new systems. NFTAPE, a tool for composing automated ...

Both analytical (Chapter ??) and simulationand experimentation-based (Chapter ??) approaches to resilience assessment rely on models for the various phenomena that may affect the system under study. These models must be both accurate, in that they reflect the phenomenon well, and suitable for the chosen approach. Analytical methods require models that are analytically tractable, while methods f...

Panel Abstract Software fault injection (SFI) is a controversial method for identifying errors and improving software. Many respected researchers believe the method holds promise, including the members on our panel, although with careful qualifications. On the other hand, COTS software manufacturers tend to view the method with skepticism for several reasons. One problem is the difficulty in ve...

When injecting faults in digital systems, most approaches measures only the probability of a fault leading to a failure. This paper addresses the necessity of considering also the fault rates to get reasonable results from the fault injection experiment. For solving this problem we developed a VHDL-based fault injection tool, which allows the correct fault description and which is able to maint...

This thesis deals with the problem of obtaining meaningful and comparable dependability measures of software through the method of fault-injection. The thesis is specifically dedicated to safety-critical embedded software and its dependability property ‘fault-tolerance’ with respect to random faults affecting the machine instruction execution. For enabling comparability of the faulttolerance of...

When injecting faults in digital systems, most approaches measures only the probability of a fault leading to a failure. This paper addresses the necessity of considering also the fault rates to get reasonable results from the fault injection experiment. For solving this problem we developed a VHDL-based fault injection tool, which allows the correct fault description and which is able to maint...

A fast fault simulation approach based on ordinary logic emulation is proposed. The circuit configured into our system that emulates the faulty circuit’s behavior is synthesized from the good circuit and the given fault list in a novel way. Fault injection is made easy by shifting the content of a fault injection scan chain or by selecting the output of a parallel fault injection selector, with...

Evaluating embedded systems vulnerability to faults injection attacks has gained importance in recent years due to the rising threats they bring to chips security. The task is particularly important for micro-controllers since they have lower resistance to fault attacks compared to hardware-based cryptosystems. This paper reviews recent embedded fault injection simulators from literature and pr...

Computer systems that are dependable in the presence of faults are increasingly in demand. Among available fault tolerance mechanisms, software-implemented hardware fault tolerance (SIHFT) is constantly gaining in popularity, because of its cost efficiency and flexibility. Fault tolerance mechanisms are often validated using fault injection, comprising a variety of techniques for introducing fa...