puzzle one : keyed ceasar shift - starting key for puzzle one is EXPOSE with a ceasar shift of 10, the final key become OHZYCO. Puzzle 2 : Linear code : My question is : how would we create a linear...

puzzle one : keyed ceasar shift - starting key for puzzle one is EXPOSE

with a ceasar shift of 10, the final key become OHZYCO.

Puzzle 2 : Linear code :

My question is : how would we create a linear code with the above and its final key for the linear code has to be the word REWARD.