Quote from: Hungry ghost on August 04, 2012, 04:57 pmI love it when the solution to a problem is simple and elegant but slightly unexpected. I was thinking "how can a message be encrypted so that it's decrypt able by three different recipients? Do you encrypt it by each in turn...no wait that would be unreadable for everyone. Some kind of new algorithm that combines the other three in the same way as sound waves can be resolved into several sine waves. Hmmm"But the solution is you don't need to encrypt the message so all three can read it. Encrypt it with a NEW symmetric key then encrypt the KEY to the three recipients! Very satisfying!Thanks for the explanation Louis you have a talent for making things easy to understand.... Just got your name, too. I'm a bit slow sometimes but I get there in the end. Who'd have thought a drug forum could be so intellectually stimulating.I agree, I didn't know how the encryption to multiple recipients worked either. I had more complicated ideas too and I think they might even work, but that solution is much more elegant. Cheers Louis!