I am new to cryptography. As I was reading a note regarding S-box construction, I found a step mentioning multiplicative inverse of a number in the finite field GF(2^8). I couldn't understand it!! Can anybody help me by explaining the procedure(step by step) to find multiplicative inverse of a number(say 95 in hex) in the finite field GF(2^8) ?
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1$\begingroup$ Welcome to Cryptography. Can you share your link? Also, I see Multiplicative inverse in $GF(2^8)$ and Galois fields in cryptography as a duplicate to your question. $\endgroup$– kelalakaCommented May 1, 2019 at 20:22
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