zkSNARKs for knowledge of preimage of a Pedersen commitment using libsnark

Ian Goldberg 7ea1a3d913 Initial commit of pedersen-libsnark code 6 lat temu
sage 7ea1a3d913 Initial commit of pedersen-libsnark code 6 lat temu
ecgadget.hpp 7ea1a3d913 Initial commit of pedersen-libsnark code 6 lat temu
pedersen.cpp 7ea1a3d913 Initial commit of pedersen-libsnark code 6 lat temu