Question: ( 5 extra points ) Let ( P , C , K , E , D ) be a cryptosystem. Prove that for each KinK

(5 extra points) Let (P,C,K,E,D) be a cryptosystem. Prove that for each KinK the encryption function eK is injective.
( 5 extra points ) Let ( P , C , K , E , D ) be a

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