Implement the stream cipher RC4 but use 16x4 bits instead of the full 256 bytes. That is, the state vector S is 16x4 bits. Assume that a plaintext of P = [3 5 4 6 9 11 13 12], and an 8x4-bit key of K= [1 3 5 7 9 11 13 15] are given. Answer the following by demonstrating your work step by step: i. Initialize the state vector S and temporary vector T. ii. iii. iv. Perform the initial permutation on S. Generate the key stream. Produce the ciphertext for the given plaintext P.
Implement the stream cipher RC4 but use 16x4 bits instead of the full 256 bytes. That is, the state vector S is 16x4 bits. Assume that a plaintext of P = [3 5 4 6 9 11 13 12], and an 8x4-bit key of K= [1 3 5 7 9 11 13 15] are given. Answer the following by demonstrating your work step by step: i. Initialize the state vector S and temporary vector T. ii. iii. iv. Perform the initial permutation on S. Generate the key stream. Produce the ciphertext for the given plaintext P.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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![Implement the stream cipher RC4 but use 16x4 bits instead of the full 256 bytes. That is, the state
vector S is 16x4 bits. Assume that a plaintext of P = [3 5 4 6 9 11 13 12], and an 8x4-bit key of
K=[1 3 5 7 9 11 13 15] are given.
Answer the following by demonstrating your work step by step:
i.
Initialize the state vector S and temporary vector T.
Perform the initial permutation on S.
Generate the key stream.
Produce the ciphertext for the given plaintext P.
ii.
iii.
iv.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffd0e9054-87dc-485f-9af2-3339ac2f18ec%2F4380e680-108d-4bbe-b098-9619ec1ae772%2Fkup63b_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Implement the stream cipher RC4 but use 16x4 bits instead of the full 256 bytes. That is, the state
vector S is 16x4 bits. Assume that a plaintext of P = [3 5 4 6 9 11 13 12], and an 8x4-bit key of
K=[1 3 5 7 9 11 13 15] are given.
Answer the following by demonstrating your work step by step:
i.
Initialize the state vector S and temporary vector T.
Perform the initial permutation on S.
Generate the key stream.
Produce the ciphertext for the given plaintext P.
ii.
iii.
iv.
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