Simple Symmetric Encryption Algorithm - Engineering Assignment Help

Assignment Task :

A simple symmetric encryption algorithm cair wmeri as follows-
1: Input message M and 64 bit key K

2: Divide M into 64 bit size blocks at...B.

3: Get first block BI and perform bit-wise XOR with K to produce encrypted block E1

4: Repeat Get next block

B.( and perform bit-wise XOR with E1-1 to produce encrypted block EL

5: Until End of message 
 

Based on the above algorithm, answer the following questions 
(a) Explain the weaknesses of the above algorithm if the lust input block is identical to the key. 
(b) Give a modified algorithm that corrects the problem(s) identified in part (a). 
 

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