[Solved] Suppose b=64bits, and s=8bits in the Ciph

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Suppose b=64bits, and s=8bits in the Cipher Feedback Mode to encrypt the characters. How many characters you can not recover if the IV is lost

Suppose b=64bits, and s=8bits in the Cipher Feedback Mode to encrypt the characters. How many characters you can not recover if the IV is lost when using Cipher Feedback mode? Explain your answer.

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