Decipher the message ’uxahqomzpuqe’ using a Shift Cipher with k = 12. Show your work.

Suppose a plaintext message x is encrypted using the Caesar cipher b = a +26 10 where each letter of the alphabet is assigned a numerical value (A = 0, B = 1, C = 2, ..., Z = 25), the variable a represents the numerical value of a letter in x, and b represents the numerical value of the corresponding letter in the ciphertext message y. If y = WKDR SC MYYV, then decrypt y to obtain the plaintext message x. Enter the decryption of each letter of y in the boxes below. NOTE: All answers should be capitalized and do not insert extra blank spaces. W → K →→ D→ R→ S→ C → M→ Y → Y → RemakingMIN... V →

6. You intercept the ciphertext ’ JVCPK’. Knowing that the ciphertext was obtained using a Shift Cipher, determine the key k that was used. What is the enciphering formula? What is the deciphering formula? Hint: The trick is to try all the possible keys until you find one that gives a familiar word.... Show your work

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