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Block Ciphers and Modes of Operation

  • José Luis Gómez Pardo
Chapter

Abstract

Most modern private-key encryption schemes are built from two ingredients: a block cipher and a mode of operation. Block ciphers are cryptographic primitives that provide encryption and decryption functions which operate on strings of a fixed size (blocks). The modes of operation act on top of block ciphers and allow the encryption of arbitrary length messages and also provide the probabilistic encryption necessary for the system to be secure. In this chapter we are going to look at these constructions and, in particular, at the most used block cipher today: the Advanced Encryption Standard.

Keywords

Encryption Scheme Block Cipher Advance Encryption Standard Data Encryption Standard Advance Encryption Standard Algorithm 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.Departamento de AlxebraUniversidade de SantiagoSantiago de CompostelaSpain

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