Question: Topics: Number Theory, Cryptography, Modular Arithmetic, Modular Exponentiation, Multiplicative Inverses, Algorithms Question: a ) Calculate 5 ^ 2 1 mod 1 3 using modular exponentiation

Topics: Number Theory, Cryptography, Modular Arithmetic, Modular Exponentiation, Multiplicative Inverses, Algorithms
Question:
a) Calculate 5^21 mod 13 using modular exponentiation algorithm. Show work.
b) Compute the multiplicative inverses of the numbers 11,43 in Z223. Show Work

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