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Basic Principles

Keith M. Martin

in Everyday Cryptography: Fundamental Principles and Applications

Published in print:
2012
Published Online:
December 2013
ISBN:
9780199695591
eISBN:
9780191774898
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199695591.003.0001
Subject:
Mathematics, Applied Mathematics

This chapter discusses the basic principles of cryptography. It covers the role of cryptography in securing information; the types of risk to which information is typically exposed; the main security ... More


Symmetric Encryption

Keith M. Martin

in Everyday Cryptography: Fundamental Principles and Applications

Published in print:
2012
Published Online:
December 2013
ISBN:
9780199695591
eISBN:
9780191774898
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199695591.003.0004
Subject:
Mathematics, Applied Mathematics

This chapter discusses symmetric encryption algorithms. It first describes the two major classes of symmetric encryption algorithm, stream ciphers and block ciphers. Simple stream ciphers are fast ... More


Public-Key Encryption

Keith M. Martin

in Everyday Cryptography: Fundamental Principles and Applications

Published in print:
2012
Published Online:
December 2013
ISBN:
9780199695591
eISBN:
9780191774898
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199695591.003.0005
Subject:
Mathematics, Applied Mathematics

This chapter discusses public-key encryption. It first explains the motivation for public-key encryption and identifies some of the problems that need to be solved before it can be used effectively. ... More


On the Brink of a Revolution

Jean-François Blanchette

in Burdens of Proof: Cryptographic Culture and Evidence Law in the Age of Electronic Documents

Published in print:
2012
Published Online:
August 2013
ISBN:
9780262017510
eISBN:
9780262301565
Item type:
chapter
Publisher:
The MIT Press
DOI:
10.7551/mitpress/9780262017510.003.0003
Subject:
Information Science, Information Science

This chapter focuses on the 1976 publication of Whit Diffie and Martin Hellman’s “New Directions in Cryptography,” which is considers a turning point in the history of cryptographic innovation. It ... More


The Cryptographic Imagination

Jean-François Blanchette

in Burdens of Proof: Cryptographic Culture and Evidence Law in the Age of Electronic Documents

Published in print:
2012
Published Online:
August 2013
ISBN:
9780262017510
eISBN:
9780262301565
Item type:
chapter
Publisher:
The MIT Press
DOI:
10.7551/mitpress/9780262017510.003.0007
Subject:
Information Science, Information Science

This chapter analyzes issues related to the ability of modern cryptography to provide mathematical certification of the effectiveness of cryptosystems. It suggests that the representational nature of ... More


Basic Principles

Keith M. Martin

in Everyday Cryptography: Fundamental Principles and Applications

Published in print:
2017
Published Online:
July 2017
ISBN:
9780198788003
eISBN:
9780191829956
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198788003.003.0001
Subject:
Mathematics, Computational Mathematics / Optimization, Logic / Computer Science / Mathematical Philosophy

This chapter serves as an introduction to the environment in which cryptography finds common use today. We discuss the need for cryptography, as well as the basic language and concepts that are used ... More


Theoretical versus Practical Security

Keith M. Martin

in Everyday Cryptography: Fundamental Principles and Applications

Published in print:
2017
Published Online:
July 2017
ISBN:
9780198788003
eISBN:
9780191829956
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198788003.003.0003
Subject:
Mathematics, Computational Mathematics / Optimization, Logic / Computer Science / Mathematical Philosophy

In this chapter, we consider the relationship between theoretical and practical security of a cryptosystem. The concept of perfect secrecy is introduced, and the one-time pad is exhibited as a ... More


Quantum Computation

Cristopher Moore and Stephan Mertens

in The Nature of Computation

Published in print:
2011
Published Online:
December 2013
ISBN:
9780199233212
eISBN:
9780191775079
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199233212.003.0015
Subject:
Physics, Theoretical, Computational, and Statistical Physics

According to the Church-Turing Thesis, a Turing machine, and thus the programming languages and computers in existence, can simulate any reasonable computing device. However, there are physical ... More


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