Question: Only answer the question if you know its correct ! Alice and Bob agree to communicate privately via e-mail using a scheme based on RC4,

Only answer the question if you know its correct !

Only answer the question if you know its correct ! Alice and

Alice and Bob agree to communicate privately via e-mail using a scheme based on RC4, but they want to avoid using a new secret key for each transmission. Alice and Bob privately agree on a 128-bit key k. To encrypt a message m consisting of a string of bits, the following procedure is used. 1. Choose a random 80-bit value V 2. Generate the ciphertext c = RC4(v || k) em 3. Send the bit string (v || C) Suppose Alice uses this procedure to send a message m to Bob. Describe how Bob can recover the message m from (VC) using k

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