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Cryptography b) Identify Z27={0,,25,26} with {A,,Z,} as in part (a). The ciphertext string NSRG was obtained using a 2-dimensional Hill cipher over Z27 with key
Cryptography 
b) Identify Z27={0,,25,26} with {A,,Z,} as in part (a). The ciphertext string NSRG was obtained using a 2-dimensional Hill cipher over Z27 with key [1115]. Find the corresponding plaintext. [10 marks] (d) An affine cipher (of dimension 1) over Z450 is used to encrypt messages. Find the number of possible keys. [5 marks] Step by Step Solution
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Database Fundamentals Study Guide
Authors: Dr. Sergio Pisano
1st Edition
B09K1WW84J, 979-8985115307
