Find the matrix representation of the decryption key

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Reference no: EM131907137

Problem

1. The encryption key in a transposition cipher is (3. 2. 6, 1. 5. 4). Find the decryption key.

2. Show the matrix representation of the transposition-cipher encryption key with the key (3. 2. 6, I. 5, 4). Find the matrix representation of the decryption key.

3. The plaintext "let us tweet now" and the corresponding cipher text "HBCDFNOPI1CLB" are given. You know that the algorithm is a Hill cipher, but you don't know the size of the key. Find the key matrix.

Reference no: EM131907137

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