For the third and final part, you will attempt to crack a Vigenere cipher using a dictionary attack. Ordinary words can make convenient keys because they are easy to remember, but this practice is far from secure. For this task, you are given a cipher and a list of some of the most common words in the English language. One of those words was used as the key to encrypt the cipher, and your job is to write the code to figure out which one it is. For simplicity, you can assume that all words in the original message are also chosen from the provided list of dictionary words. DICTIONARY = [ 'INFORMATION', 'AVAILABLE', 'COPYRIGHT'.......] def vigenere_dictionary_attack(c: str) -> str: # TODO: Write the necessary code to get the message (m) from the cipher (c) # If no valid keyword found, return empty string return ''.

1. For the third and final part, you will attempt to crack a Vigenere cipher using a dictionary attack.
Ordinary words can make convenient keys because they are easy to remember, but this practice
is far from secure. For this task, you are given a cipher and a list of some of the most common
words in the English language. One of those words was used as the key to encrypt the cipher, and
your job is to write the code to figure out which one it is. For simplicity, you can assume that all
words in the original message are also chosen from the provided list of dictionary words.
DICTIONARY = [
'INFORMATION', 'AVAILABLE', 'COPYRIGHT'.......]
def vigenere_dictionary_attack(c: str) -> str:
# TODO: Write the necessary code to get the message (m) from the cipher (c)
# If no valid keyword found, return empty string
return ''