Cryptography and applications

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1.Secret sharing and secret splitting aretechniques that can provide confidentiality without the use of keys.

(a)Explain the concept of secret splitting. In particular, elaborate on the notions of dealer, shares and shareholders. What is a (k,n) threshold scheme, and how does it relate to secret splitting? (7marks)

(b)Shamir introduced secret sharing based on polynomial interpolation.(i)Explain how to use this scheme generically in order to create a secret splitting scheme for n=2 shareholders.(5 marks)(ii)Using the secret splitting scheme designed in the previous question part, share the secret s=dwhere dis the last non-zero digit of your student ID number. Give all the three shares that need to be distributed.(3 marks)

(c)The goal of a Public Blockchain system is to enable users to anonymously send transactions stored on a public ledger. These transactions can be read by anyone, but cannot be modified once stored. Sketch a security architecture for a multi-blockchain application based on secret sharing, where transactions can be sent using several, different Blockchain systems (you do not have to mention any specific systems). This architecture would provide transaction confidentiality, without the use of encryption. Provide a diagram and a description of the security architecture, without going into details.(5 marks)

Sample Solution

The article also adds several realities; Power comes from sharing information, not hoarding it. This is vital at all business levels. The company has to conduct an open books rule on finances, tactic, as well as organization. Hamel, has the idea that Generation Facebook are used to sharing all about their lives with every Web person and it is not something which stops at work(2016). As a way of making better decisions, the Facebook generation makes use of their networks and comprehensive networks. The companies which are smart to see this will couple up this power on the inside and witness a real performance change. (Hamel, 2016).

Users can veto most policy decisions. A part of Servant Leadership ethos is making sure that the workers have all they require to work well enough. The overall idea of all this is making sure that they have the permission to suggest the direction they are willing to head to. Intrinsic rewards matter most. Individuals want to do a good job and get a recognition for it. Generation Facebook not only want to be good, but also be included in something bigger. It’s more significant to create as well as communicate a strong purpose and the reason why you exist as a company.

The author’s view is that Generation Facebook will imagine and expect a working environment which is typical to their online one. That will include easy access to material, networking ease and lack of a hierarchy at all. Hamel concludes by saying that, in order to attract young and good workers, companies need to reinvent their practices in management in order to align with the expectations of Generation Facebook. A lot has been written about this generation and their approaches to work, but the influence that the Web has had on them is a huge game-changer.

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