A. Cryptography 1. Use the Caesar cipher to encrypt the following plaintext: Plaintext: Cat memes are essential to the health of a cryptography student! Ciphertext: -------------------------------------------------------------------------------

2. Use the Vigenere cipher to encrypt the following plaintext: Plaintext: People say that cat memes are bad for cryptography students NOT! Key: cat Ciphertext: -------------------------------------------------------------------------------

3. Use the standard ROT13 cipher to encrypt the following plaintext: Plaintext: I prefer dog memes to cat memes, but I am afraid to let Andrew know Ciphertext: -------------------------------------------------------------------------------

4. Research the Beaufort Cipher method to encrypt the following plaintext: Plaintext: I agree, dogs are better! Keyword: dog Ciphertext: -------------------------------------------------------------------------------

B. Cryptanalysis

1. Download and use the tool evercrack https://sourceforge.net/projects/evercrack/ or use the website https://cryptii.com/pipes/caesar-cipher to decrypt the following ciphertext ciphertext = "Vszzc Kcfzr, vck ofs mci rcwbu fwuvh bck?" plaintext = ------------------------------------------------------------------------------

2. Download and install cryptool to decrypt the following ciphertext ciphertext = "efgfoe uif fbtu xbmm pg uif dbtumf plaintext = -----------------------------------------------------------------------------

3. BONUS Question: The theme of many of these questions reveals the key used in a Vigenere cipher to produce ciphertext, what is the original plaintext message? Ciphertext: Errrttpaeasbu il hug! Plaintext: -----------------------------------------------