Galois Field multiplication in AES, I got E3 using my method, but the answer is D3 in book.

[shivajikobardan]

This is taken from this book:

 

https://books.google.com.np/books?id=k-rKDwAAQBAJ&pg=PA91&dq=advanced+encryption+standard&hl=en&sa=X&ved=2ahUKEwj_nIeU6t75AhUMGKYKHbJWDms4oAEQ6AF6BAgGEAI#v=onepage&q=advanced%20encryption%20standard&f=false

 

Page 102

 

I've used this method given in this pdf below to calculate "mix column" step output.

 

https://www.networkdls.com//Articles/AESbyExample.pdf

It's in page number 9.

 

I'm trying to find this below ( + means XOR here)

 

1*36+2*b9+3*a5+3*38

 

=36+69+f4+48

 

=e3