a. Construct the key for the affine cipher C ? 5P - 4 mod 26. b. Encrypt the message SHOELESS JOE NOT INVOLVED using (a). c. Decrypt the message NDWL QBWB QDSN FVOD GWIF using (a).
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Constructing the key for the affine cipher: The key for the affine cipher consists of two numbers: a and b. We are given that C = 5P - 4 mod 26, which means that a = 5 and b = -4 (note that -4 is equivalent to 22 mod 26, since we want b to be a positive number Show more…
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