Question: A one-to-one function and its inverse can be used to make information secure. The func- tion is used to encrypt a message, and its inverse

A one-to-one function and its inverse can be used to make information secure. The func- tion is used to encrypt a message, and its inverse is used to decrypt the encrypted mes- sage. The following numerical values are assigned to each letter of the alphabet:

Using the function f(x) 3x-1, the message \"HELLO\" would be encrypted 23 14 35 35 44 since H corresponds to 8 and f(8) 3(8)-1 23, etc.

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