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Generate the CRC codeword for the message x^3+1 using the generator polynomial x^3+x+1.(a) 1001101(b) 1001001(c) 1001110(d) 1001111The question was posed to me in an interview for job.My question comes from Layers in chapter Cryptography Overview, TCP/IP and Communication Networks of Cryptograph & Network Security |
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Answer» CORRECT option is (C) 1001110 Easy explanation: M(x) = 1001. G(x) = 1011. x^3*M(x) = 1001000. On DIVIDING we get remainder as 110. THEREFORE, Codeword is 1001110. |
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