Cyrptography*** Suppose you saw a ciphertext stream that you know was encrypted with DES-CBC, and you...

Cyrptography*** Suppose you saw a ciphertext stream that you know was encrypted with DES-CBC, and you observed that C3 = C6(i.e., the third and sixth output ciphertext blocks were the same).What information does this tell you about the plaintext input?

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8. Suppose you saw a ciphertext stream that you know was encrypted with DES-CBC, and you...

8. Suppose you saw a ciphertext stream that you know was encrypted with DES-CBC, and you observed that C3 = C6 (i.e., the third and sixth output ciphertext blocks were the same). What information does this tell you about the plaintext input?

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