Quote from: jackjack on May 06, 2013, 06:54:23 AM

Quote from: etotheipi on May 06, 2013, 02:06:46 AM

Did you look at ECIES?

No, but as I understand the wikipedia article, it seems a bit more complicated (or maybe it's just because I'm not comfortable with KDFs and HMACs)
Can it be used with ECDSA private keys?

Quote from: Zeilap on May 06, 2013, 02:08:41 AM

You've come up with ElGamal encryption independently. Pretty impressive

.

Yeah that's true it's really similar! Not being a crypto guy (even though I'm rather good at maths) I can't imagine I'm the only one who tried that kind of things, so why is it not used?

Also, as I understand the article my implementation seems secure

I'm not a crypto expert, but if your implementation is truly the same as ElGamal, well it is being used. For example, Pretty Good Privacy implementations use ElGamal as one of the options.