SYMMETRIC KEY CRYPTO?
Monday, June 13th, 2011 at
09:52
Suppose that the ciphertext in equation 3.7 had been encrypted in CBC mode instead
of ECB mode. If Trudy believes ECB mode is used and tries the same cut-and-paste
attack, which blocks decrypt correctly?
equation 3.7 C0,C1,C5,C3,C4,C2
equation 3.6 Pi = D(Ci,K) ⊕ Ci−1 for i = 0, 1, 2, . . . .
Tagged with: c5 • ciphertext • cut and paste • pi • trudy
Filed under: crypto and decrypt
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Yes.
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But you need to take the answer from 3.6 into consideration.