1. Use a columnar transposition cipher with a rectangular array and keyword utica to encrypt the following message: "Multiple encryption is the process of encrypting an already encrypted message one or more times, either using the same or a different algorithm."

2. The following message was encrypted with a columnar transposition cipher using a full rectangular array and keyword mathematics. Decrypt it. RIUGS IPNCT MSPAL AUNCY SOOCH UEYSA RTE

3. Cryptanalyze the following message. It was encrypted with a columnar transposition cipher using a full rectangular array. NTDVC ILRDT LFNIT AUEEE UEOUA OVSEN CIOTN CCSLS ATIPN RNVA

4. A message is encrypted with a transposition cipher. What should we see if we do a frequency analysis of the message?