It doesn't use the Public Key Algorithm. On their site they state the following "Paranotek is a security software company that has developed ‘Parano’ as a post-quantum, cryptographic protocol, designed to withstand sophisticated security hacks both currently in use and expected in the future from super and quantum computers." That protocol is what makes them stand out from everyone else.
This is directly from the developer Lauri>> Yes most of the public key algorithms used today can be broken, but we are using algorithms that are PQ resistant. We have close to 10 algorithms in Parano, symmetric and asymmetric
No one has what Paranotek has developed for protocol security and it is patent pending protected. This is like buying into Microsoft for .001 especially if they are going to be securing Blockchain applications as well.... This is going to be worth in the $'s per share IMO....