OmegaMouse OP , 3 months ago

I explained it poorly - what I mean to say is, two people trying to send the message ‘Hello’ for example both using the same public key would get the same output. So if you had a simple message like that, someone could work out by checking every word in the dictionary what your message was by checking if the output matched.

But I guess it’s a bit of a moot point - it’s unlikely that an encrypted message would ever be so simple. It could just as easily be much longer, and therefore basically impossible to guess the plaintext.