Monday, February 24, 2020

Perform a Detailed Task Analysis Assignment Example | Topics and Well Written Essays - 500 words

Perform a Detailed Task Analysis - Assignment Example For example if he is going for an educational vacation he should consider a place where there is access to books, internet and any other research tools he may require. If he is going for a recreational tour he might consider factors like the weather of the place of destination, the places to be ventured into and the security of the same. He also needs to conduct an economic analysis of the places to be visited in order to select the most convenient economical destination without compromising on the vocational goals (Kirwan, 1992) After identifying the place to visit based on the vocational goals, Sam should put down all the requirements in a hierarchical manner in order to make his trip a success. The most vital points to emphasize on include money allocation/distribution, gathering important personal effects, arranging for the day and time of departure, consulting with the travel agency and making other personal arrangements such as notifying colleagues and family members about the trip and any other party concerned. In order to avail for proper distribution of money, Sam must consider the amount of money he is going to spend on the trip and distribute it accordingly based on the travel budget. This will involve considerations on which means of transport to use and the cost on the same, where to stay and the funding for the various activities included in the vocation needs. This includes entertainment costs, agency costs among others (Shepherd, 2001). After deciding on how much to spend on each item, Sam should gather all the items listed in his travel schedule. This will include items such as a suitcase, clothing and other items related to his personal wellbeing. He should also gather all items necessary to meet his vocational goals such as books if he is going for an educational vocation. In order to be on schedule, Sam must identify the date for the trip and make the necessary arrangements with the parties involved. This will

Saturday, February 8, 2020

Side Channel Attacks Essay Example | Topics and Well Written Essays - 3750 words

Side Channel Attacks - Essay Example Zhou and Feng (2011) observed that cryptographic devices’ physical attacks tends to take advantage of implementation-specific features to convalesce the secrete considerations factored in during computation. As a result, they are much less general because they are specific to a particular implementation, but rather more powerful than classical cryptanalysis that is normally perceived to be very serious by cryptographic device manufacturers, according to Zhou and Feng (2011). There are usually numerous such physical attacks, which falls under two broad categories namely invasive vs. non-invasive attacks and active vs. passive attacks. Invasive attacks, according to Zhou and Feng (2011) need de-packaging of the chip in order to have direct access to the components inside it. A classical example of invasive attack can be a wire connection onto a data bus to be able to view the data transfers (Bao et al., 2011). A non-invasive attack, on the other hand, only uses information avail able externally, such as power consumption and running time, according to Zhou and Feng (2011). ... Therefore, the side-channel attacks that this paper seeks to explore are a form of physical attacks where an adversary attempts to exploit the leakages of physical information such as power consumption, timing information, or electromagnetic radiation. Skorobogatov (2011) defines side-channel attacks as any form of physical attack based on information obtained from the physical implementation of a cryptosystem, but not brute force in the algorithms. Skorobogatov (2011) reveals that side-channel attacks pertain to measuring changeability of hardware and analyzing the behavior of the algorithm that runs the hardware in question. However, since the information leakages resulting from side-channel attacks are passive, non-invasive and can easily be performed using cheap equipment, they pose danger to the security of cryptographic hardware devices, according to Skorobogatov (2011). The cryptographic devices include among other things personal computers, smart cards, and radio frequency id entification devices (RFIDs) among others. Their proliferation has made the physical security and side-channel attacks a major concern that need to be examines in details (Bidgoli, 2006). This paper will begin by examining the basics of side-channel attacks. Among the issues discussed in this section, include the genesis of unintended information leakages in latest microelectronic technologies and how the physical features can be recovered using a simple measurement setups. This will be followed by an exploration of some of the typical examples of side-channel attacks such as the differential power analysis (DPA) and simple power analysis (SPA).