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Message Authentication

  • José Luis Gómez PardoEmail author
Chapter

Abstract

Since ancient times, cryptography has been closely associated with providing confidentiality and so it is often implicitly or explicitly identified with the use of encryption and decryption. But, important as confidentiality is, modern cryptography goes far beyond this objective and message authentication and message integrity are perhaps even more important goals. In this chapter we will look at techniques that provide message integrity in the private-key setting, in which the honest parties share some secret key. These techniques will try to guarantee that any modification of the message will be detected by the honest parties.

Keywords

Hash Function Encryption Scheme Block Cipher Negligible Probability Collision Attack 
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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