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You generate a perfectly random key K. You send two messages, M1 and M2, encrypted with K (C1 = K xor M1 and C2 = K xor M2). Does sending C2 leak information about M1 and M2?

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Here we can make many conclusion like

1st if m1 and m2 is greter than k then c1 and c2 will be equal he can objerve this and 2nd if we xored c1 and c2 we find result eqivalent to m1 xored m2 again he can guess , and u can also understand if u will take example here random number k is not so useful.

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