-4
$\begingroup$

Please suggest how can i solve the below question

What is the inverse of {03} in GF (2^8) with the irreducible polynomial x8+x4+x3+x+1?

$\endgroup$
1
$\begingroup$

Could you please describe what are the difficulties you are encountering?

Anyway, the polynomial mentioned is the one used for the AES cipher and I suggest you to read this specification (especially the section 4 which explains briefly the mathematical background).

| improve this answer | |
$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.