Which of the following statements are truei) In the CBC mode, the plaintext block is XORed with previous ciphertext block before encryptionii) The CTR mode does not require an Initialization Vectoriii) The last block in the CBC mode uses an Initialization Vectoriv) In CBC mode repetitions in plaintext do not show up in ciphertext

• A. iii)
• B. ii) and iv)
• C. All the Statements are true
• D. i) ii) and iv)View Answer