one question about RC4

[Xunhua (Steve) Wang]

I have a question about RC4. Assume key k1 and k2 are 128 bits and let
E(k, m) denote the RC4 encryption of m by k, is there a key, k3, of RC4
satisfying that E(k2, E(k1, m)) = E(k3, m) and if yes, how can we find
such k3?

Thanks,

Steve


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