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Mathematics, 30.07.2019 17:20 rgilliam3002

Suppose that the following 40-letter alphabet is used for all plaintexts and ciphertexts: a-z with numerical equivalents 0-25, blank-26, m27, ? -28, $-29, the numerals 0--9 with numerical equivalents 30- 39. suppose that plaintext message units are digraphs and ciphertext message units are trigraphs (i. e., k 2, 1 .. 3, 402

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Suppose that the following 40-letter alphabet is used for all plaintexts and ciphertexts: a-z with...
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