3. You have intercepted the following two ciphertexts, which were generated from the same plaintext P by use of two different one-time pads with keys k1,k2 : Encrypted with k1:100110 Encrypted with k2:001100 The alphabet here is {0,1}, with usual mod 2 arithmetic. Some of the following values can be deduced from this information and some cannot. For each value, state what it is or why we cannot find it. (All operations are to be taken bitwise, so for example, 011+110=101.) (a) k1 (b) k2 (c) k1+k2 (d) k1k2 (e) P+k1+P+k2