Question: ( 1 point ) This question concerns block cipher modes. We will use a simple affine cipher, which can be expressed in C as follows.

(1 point) This question concerns block cipher modes. We will use a simple affine cipher, which can be
expressed in C as follows.
char cipher(unsigned char block, char key)
{
return block
(1 point) This question concerns block cipher modes. We will use

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