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Implement a function which converts an input string to a set of blocks for cryptographic computation.

INSTRUCTIONS TO CANDIDATES
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Assignment 2

Problems - String conversion:

Implement a function which converts an input string to a set of blocks for cryptographic computation. Specifically, the function should take an input a string and a block size and output a list (or an array) of converted string

Pre/post conditions for the function is as follows:

⚫encode (PN)

- Pre-condition: The function takes a string P, e.g, Phello world' and a block size N. e.g., N-8 (8 bit).

- Intermediate process: It first convert the string into ASCII codes,

e.g., P-104 101 108 108 111 32 119 111 114 108 100,

then split it by the other input N

-Post-condition: It outputs a list of number blocks, e.g.. PL-[104, 101, 108, 108, 111,

32, 119, 111, 114, 108, 100].

⚫ decade (PLN)

. It recovers the original string

Since 8-bit can express 0-255, the function does not need to split the values. It just converts each character and puts into a list. However, if N is greater than 8, you should find a rule to avoid information lost.

The implementation must include Good test codes to demonstrate the correctness of your program.

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