Question
Let f(x) = x 3 −x−1 ∈ Z5[x]. Find the product of x 2 +2x+1+ (f(x)) and x 2 +3x−1+ (f(x)) using the algorithm in page 23, block 1. You should show all the steps as in example 11, page 22, block 1.
Sure, let's break it down step by step.
Firstly, let's define the polynomials:
\[ f(x) = x^3 - x - 1 \in \mathbb{Z}_5[x] \]
And the polynomials:
\[ g(x) = x^2 + 2x + 1 + (f(x)) \]
___ _____ ____________ ______ _____________ ___ ___ _______ _____.Alice wants to use the ElGamal digital signature scheme with public parameters p = 47, α = 2, secret value a = 7 and β = 34. She wants to sign the message M = 20 and send it to Bob. She chooses k = 5 as the secret value. Explain the procedure that Alice will use for computing the signature of the message. What information will she send Bob?
Considering the bytes 10001001 and 10101010 as elements of the field F2[X]/hg(X)i, where g(X) is the polynomial X 8 +X 4 +X 3 +X +1, find their product and quotient .
Let f(x) = x 4 +x+1 ∈ F2[x]. We represent the field F2 4 by F2[x]/(f(x)). Let us write γ = x+ (f(x)). The table of values is given below:
i ) Prepare logarithm and antilogarithm tables as given in page 23 of block 1.
Language and thinking are interlinked and support the development of each other. Discuss!
Process Skills
Find the inverse of 13 (mod 51) using extended euclidean algorithm
Decrypt the message c = 23 that was encrypted using RSA algorithm with e = 43 and n = 77.
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