Finite Fields In Cryptography And Network Security

Finite fields are important in several areas of cryptography.

Finite fields in cryptography and network security.

Computer and network security by avi kak lecture4 back to toc 4 1 why study finite fields. Finite fields part 3 part 3. Services mechanisms and attacks the osi security architecture network security model classical encryption techniques symmetric cipher model substitution techniques transposition techniques steganography finite fields and number theory. I said tap eight.

This lecture from purdue university talks about finite fields and their role in network security. Groups rings fields modular arithmetic euclid s algorithm finite fields polynomial arithmetic prime numbers fermat s and euler s theorem. However cryptography has not found a use for all kinds of finite fields. It can be shown that the order of a finite field number of elements in the field must be a power of a prime p n where n is a positive integer.

Cryptography and network security chapter 4 fifth edition by william stallings lecture slides by lawrie brown infinite fields are not of particular interest in the context of cryptography. It can be shown that the order of a finite field. Check out this document that discusses encryption and its importance in protecting various types of sensitive information. Advanced encryption standard encryption.

To review polynomial arithmetic polynomial arithmetic when the coefficients are. This means you can find finite fields of size 5 2 25 and 3 3 27 but you can never find a finite field of size 2 13 26 because it has two different prime factors. Cryptography and network security chapter 4 fifth edition by william stallings lecture slides by lawrie brown chapter 4 basic concepts in number theory and finite fields the next morning at daybreak star flew indoors seemingly keen for a lesson. Finite fields of order p can be defined using arithmetic mod p.

A finite field is simply a field with a finite number of elements. Polynomial arithmetic theoretical underpinnings of modern cryptography lecture notes on computer and network security by avi kak kak purdue edu may7 2020 12 29noon c2020avinashkak purdueuniversity goals.