Hey folks,
So I now know how to do Symmetric Key Exchange, over a public channel (all data exchanged is public) using just symmetric keys ciphers (which need to be as strong as a KPRF, for example like SKREMAlpha).
So basically starting with nothing, Alice and Bob agree on a key of arbitrary length, WITHOUT using public key cryptography at all.
How is this called in literature? Is this a new result?
So it's basically based on Meet in the Middle Key Exchange plus key length amplification.
Best,
Mircea Digulescu