Please solve this for me.
The following enciphered message was intercepted. Derive the type of algorithm used, then recover the key, decrypt the message and answer the question
FHHJJFSIVQQMKMBCBZXCQMKMXU
4) Alice and Bob are going to use a Vigenere cipher with the bit stream generated by a 4 bit linear shift register:
b<sup>,</sup><sub>1
</sub>< --b<sub>2</sub>
b<sup>,</sup><sub>2
</sub><<sub> </sub>--b<sub>3
</sub>
b<sup>,</sup><sub>3
</sub><-- b<sub>4</sub>
b<sup>,</sup><sub>4
</sub><-- b<sub>2</sub>+b<sub>4</sub>
<sub> </sub>
String w/
b<sup>,</sup><sub>1
</sub>= 1
b<sup>,</sup><sub>2
</sub>= 0
b<sup>,</sup><sub>3
</sub> = 0
b<sup>,</sup><sub>4
</sub>=
1
Populate the frequency table and decipher the following message in binary
Form):
01110010 10011000 11110010
10001010
