Question: 1) The Content Scramble System (CSS) is an encryption system employed on many commercially produced DVD-Video discs. CSS employs a stream cipher and mangles the

 1) The Content Scramble System (CSS) is an encryption system employed

1) The Content Scramble System (CSS) is an encryption system employed on many commercially produced DVD-Video discs. CSS employs a stream cipher and mangles the keystream with the plain-text data to produce the cipher text. The stream cipher is based on two Linear Feedback Shift Register (LFSR) and set up with a 40-bit seed. This encryption algorithm has been badly broken. Please answer the following questions regarding CSS implementation. a) Partial credit 1: Draw an 8-bit LFSR and explain how it can produce a sequence of bits that appears random. [0.5 point b) Partial credit 2: Please identify number of bits in each of the following LFSRs that have been utilized in the design of CSS. In addition, Please explain how CSS can be broken. [0.5 points] ???-bit LFSR +(mod 256) ???-bit LFSR 1) The Content Scramble System (CSS) is an encryption system employed on many commercially produced DVD-Video discs. CSS employs a stream cipher and mangles the keystream with the plain-text data to produce the cipher text. The stream cipher is based on two Linear Feedback Shift Register (LFSR) and set up with a 40-bit seed. This encryption algorithm has been badly broken. Please answer the following questions regarding CSS implementation. a) Partial credit 1: Draw an 8-bit LFSR and explain how it can produce a sequence of bits that appears random. [0.5 point b) Partial credit 2: Please identify number of bits in each of the following LFSRs that have been utilized in the design of CSS. In addition, Please explain how CSS can be broken. [0.5 points] ???-bit LFSR +(mod 256) ???-bit LFSR

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