The algorithm is very simple and natural


3. Consider a simple symmetric encryption algorithm as follows:
1- Input text T and 64 bit key K
2- Divide T into 64 bit size blocks B1...Bn
3- Get first block B1 and perform bit-wise XOR with K to
produce encrypted block E1
4- Repeat
a. Get next block Bi and perform bit-wise XOR with Ei-1
to produce encrypted block Ei
5- Until End of Text
The algorithm is very simple, and naturally, we do not expect the ciphertext to be cryptographically strong. Given the above algorithm answer the following: i. Is it a problem if the first block of input happens to be the same as the key?
Explain why?
ii. Modify the algorithm to rectify the above problem. 

Request for Solution File

Ask an Expert for Answer!!
Data Structure & Algorithms: The algorithm is very simple and natural
Reference No:- TGS0109840

Expected delivery within 24 Hours