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1. (Alberti cipher decryption, 10 points) Using the Alberti disk in this document, decrypt the following ciphertext.

lHFCJAYCUHQWeDVBAXTFIZNoYAWRCYWKBDRnLPSVXSLKXIWaCHLLHJODWT

For this wheel, the plaintext (on the outer wheel) is in lowercase and the ciphertext (on the inner wheel) is in uppercase. In the ciphertext given above, a lower case letter indicates that you should align the uppercase "A" on the inner wheel with that letter. Recall that we call the letter "A" the index letter. For example, to start decrypting the given ciphertext, align "A" with the letter "l" (that's the letter "ell", not the digit "1"). Write down the plaintext with spaces re-inserted.

2. (Alberti cipher encryption, 15 points) Using the Alberti disk from the previous question, encrypt the following plaintext (with spaces and punctuation removed and all letters put into lower case) with the index letter "X". Use the letters in your first name (and letters in your last name, if necessary) to determine where to position the index letter and move the index letter every 8 characters. To help see this, note that the letters "leona" were used in the previous question and they were positioned after every 11 characters.

It was the peak of cryptography at that time.

Write down the ciphertext. Don't forget that it should include the letters indicating where to position the index letter every eight characters.

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