If a message contains two identical 64-bit blocks, the corresponding ciphertext blocks are also identical. Switching the order of two cipher blocks will not cause any detectable error in the plaintext. Duplicating a cipher block will not cause any detectable error in the plaintext. Deleting a cipher block will cause some detectable error in the plaintext.
If a message contains two identical 64-bit blocks, the corresponding ciphertext blocks are also identical. Switching the order of two cipher blocks will not cause any detectable error in the plaintext. Duplicating a cipher block will not cause any detectable error in the plaintext. Deleting a cipher block will cause some detectable error in the plaintext.
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Transcribed Image Text:The following figure is the Cipher Block Chaining (CBC) mode to encrypt large messages. Which of the followings statement is *correct* regarding this mode?
IV
m₁
m₂
m3
C3
m4
C4
m5
C5
If a message contains two identical 64-bit blocks, the corresponding ciphertext blocks are also identical.
Switching the order of two cipher blocks will not cause any detectable error in the plaintext.
Duplicating a cipher block will not cause any detectable error in the plaintext.
Deleting a cipher block will cause some detectable error in the plaintext.
m6
E encrypt with secret
key
C6
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