Decrypt the cipher text in the file Test$2$AESQuestion.hex and use the plain text to determine the main subject of the text. The message has been encrypted with the AES cipher using a $128-$bit key. The key has been encrypted using a rotation cipher.

Help and hints:

The encrypted key is available in the file Test$2$AES$-$Key.txt$.$ This has been encrypted with a simple rotation$/$substitution cipher. There are many online sites that will quickly decrypt this.

Use Cryptool to perform the AES decryption

The cipher text is available in the file Test$2$AESQuestion.hex.

Mr$.$ Rogers

Mr$.$ Spock

Mr$.$ Ed

Mr$.$ Mister

Mr$.$ Coffee

Mr$.$ E

Mr$.$ Pibb

Mr$.$ Bubble