Note: The notation from this problem is from Understanding Cryptography by Paar and Pelzl. We conduct a known-plaintext attack against an LFSR. Through trial and error we have determined hat the number of states is m = 4. The plaintext given by 01110010 = x0¤1£2£3X4C5X6X7 when encrypted by the LFSR produced the ciphertext 11000011 = Y0Y1Y2Y3Y3Y5Y6Y7- What are the tap bits of the LFSR? Please enter your answer as unspaced binary digits (e.g. 0101 to epresent p3 = 0, P2 = 1, P1 = 0, po = 1).

Database System Concepts
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Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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Chapter1: Introduction
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Note: The notation from this problem is from Understanding Cryptography by Paar and Pelzl.
We conduct a known-plaintext attack against an LFSR. Through trial and error we have determined
that the number of states is m = 4.
The plaintext given by
01110010 = 0X1X2X3X4X5X6X7
when encrypted by the LFSR produced the ciphertext
11000011 = YOY1Y2Y3Y3Y5Y6Y7-
What are the tap bits of the LFSR? Please enter your answer as unspaced binary digits (e.g. 0101 to
represent p3 = 0, p2 = 1, p1 = 0, po = 1).
Transcribed Image Text:Note: The notation from this problem is from Understanding Cryptography by Paar and Pelzl. We conduct a known-plaintext attack against an LFSR. Through trial and error we have determined that the number of states is m = 4. The plaintext given by 01110010 = 0X1X2X3X4X5X6X7 when encrypted by the LFSR produced the ciphertext 11000011 = YOY1Y2Y3Y3Y5Y6Y7- What are the tap bits of the LFSR? Please enter your answer as unspaced binary digits (e.g. 0101 to represent p3 = 0, p2 = 1, p1 = 0, po = 1).
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