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(b) Let P , C , K denote respectively the plaintext space, ciphertext space and key space of a
given cryptosystrem. Assuming that each of these spaces is finite, that the cryptosystem is
perfectly secure and that every c C has non-zero probability of occuring, prove the inequalities K
C P

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(b) Let P-C-K denote respectively the plaintext space- ciphertext spac.pdf

  • 1. (b) Let P , C , K denote respectively the plaintext space, ciphertext space and key space of a given cryptosystrem. Assuming that each of these spaces is finite, that the cryptosystem is perfectly secure and that every c C has non-zero probability of occuring, prove the inequalities K C P