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Maarten appears to make it look like it's an impossible (or, at least, an exceedingly difficult task) to recover the two plaintexts. Indeed, if you literally know nothing about the plaintexts, it can be difficult. However, you typically have a reason you are interested in the messages, and hence often have a clue as to what language they might be. If the ...


Unless you know more about the plaintexts two ciphertexts may not convey all the information to reconstruct the two messages. For instance if you have a bit 0 then both messages may contain a 0 at that location or they may both contain a 1. If you have a 1 message 1 may contain a 0 and message 2 may contain a 1, but it could also be the other way around. ...

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