2 Cryptography Consider Two Messages N Blocks M Mm2mn M2 M1 M2 Mn M1 M2 Differ First Block Q37210494

2. [Cryptography] Consider two messages each of n blocks m: Mm2mn and M2 m1 m2.|mn, where M1 and M2 differ only in the first block. Which of the following statements hold? Assume the same key is used for all encryption. b) If M1 and M2 are encrypted using cipher block chaining (CBC), but the same initialization vector (IV) is used for encrypting both messages, none of the ciphertext blocks will repeat between each

OR

 

OR