A cryptography student has accidentally used the same keystream to encrypt two different messages, M1 and M2. We know that the Ox638cd0bla9114b4d. We also happen to know that M1 = 0x2b1d510e6a67ae98. ciphertexts are C1 0x2e38ac20fe51668c and C2 a) What is M2 in hexadecimal? Please give your answer a leading Ox and use lowercase letters only. b) What is the keystream? Please give your answer a leading Ox and use lowercase letters only. Hint: These are all 8 byte numbers and will fit in an unsigned long type on most systems.

Computer Networking: A Top-Down Approach (7th Edition)
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ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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A cryptography student has accidentally used the same keystream to encrypt two different messages, M1 and M2. We know that the
Ox638cd0bla9114b4d. We also happen to know that M1 = 0x2b1d510e6a67ae98.
ciphertexts are C1
0x2e38ac20fe51668c and C2
a) What is M2 in hexadecimal? Please give your answer a leading Ox and use lowercase letters only.
b) What is the keystream? Please give your answer a leading Ox and use lowercase letters only.
Hint: These are all 8 byte numbers and will fit in an unsigned long type on most systems.
Transcribed Image Text:A cryptography student has accidentally used the same keystream to encrypt two different messages, M1 and M2. We know that the Ox638cd0bla9114b4d. We also happen to know that M1 = 0x2b1d510e6a67ae98. ciphertexts are C1 0x2e38ac20fe51668c and C2 a) What is M2 in hexadecimal? Please give your answer a leading Ox and use lowercase letters only. b) What is the keystream? Please give your answer a leading Ox and use lowercase letters only. Hint: These are all 8 byte numbers and will fit in an unsigned long type on most systems.
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