Combinatorics and Graph Theory: Proceedings by Rao S. B. (Ed)

By Rao S. B. (Ed)

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17]). In general, the smaller and the more specialized a hardware device is, the more successful a differential power analysis is likely to be. For example, differential power analysis has been shown to be particularly successful against smartcards. There are a couple of possibilities to protect against differential power analysis, such as keeping the power consumption stable or blinding the data before the cryptographic operations are applied. , [18, 19]). This field of study has a long tradition in computer security.

15 After their publication, the two theories started a new branch of research that is commonly referred to as information theory (refer to Chapter 5 for a brief introduction on information theory). 16 Their vision was to employ trapdoor functions to encrypt and digitally sign electronic documents. Informally speaking, a trapdoor function is a function that is easy to compute but hard to invert, unless one knows and has access to some specific trapdoor information. This information is the private key that must be held by only one person.

The most important message authentication systems are overviewed, discussed, and put into perspective in Chapter 11. 3 we mentioned that random bit generators are important building blocks for many cryptographic systems, and that there is no deterministic (computational) realization or implementation of such a generator, but that there are nondeterministic realizations and implementations making use of physical events and phenomena. , if one needs a random bit generator but none is available, or if one must make statistical simulations or experiments that can be repeated as needed).

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