Algebra for Cryptologists pp 219-249 | Cite as

# Applications to Block Ciphers

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## Abstract

Finite fields have for a long time been important in Applied Algebra, in particular in the theory of error correcting codes. In more recent times, they have assumed an equally important role in Cryptography, initially mainly in the generation of pseudorandom sequences and the design of stream ciphers, as we have seen. But more recently, especially since the selection of *Rijndael* in 2000/2001 as the *Advanced Encryption Standard* (AES), they have assumed a vitally important role in the design of block ciphers as well. In this chapter we discuss some aspects of these further applications.

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